mirror of https://github.com/torvalds/linux.git
92 Commits
| Author | SHA1 | Message | Date |
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Brian Ochoa
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c9876cdb3a |
docs: arch/x86/sva: Fix two grammar errors under Background and FAQ
- Correct "in order" to "in order to" - Append missing quantifier Signed-off-by: Brian Ochoa <brianeochoa@gmail.com> Signed-off-by: Ingo Molnar <mingo@kernel.org> Link: https://lore.kernel.org/r/20250219150920.445802-1-brianeochoa@gmail.com |
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Linus Torvalds
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d0f93ac2c3 |
Documentation changes this time around include:
- Quite a bit of Chinese and Spanish translation work. - Clarifying that Git commit IDs >12chars are OK - A new nvme-multipath document - A reorganization of the admin-guide top-level page to make it readable - Clarification of the role of Acked-by and maintainer discretion on their acceptance. - Some reorganization of debugging-oriented docs. ...and typo fixes, documentation updates, etc. as usual. -----BEGIN PGP SIGNATURE----- iQFDBAABCAAtFiEEIw+MvkEiF49krdp9F0NaE2wMflgFAmeOp8EPHGNvcmJldEBs d24ubmV0AAoJEBdDWhNsDH5YipUH/iffvlVYuqoVdPUFWdmsiNjwOCRE2MIfp8qO tPTRRHJAny+NlFT0IWlGUbLNoNXtvpN47YlkaeAjdrsjASerfpwzje7t4Z1B+jWT 0YwGBCvDIGasfRCx7D14+w5aqkEEynfsy+QurwcuDxcHMQGwt7ZCuTNOVO6BULEr L++BMwqapUr5IemP4ItQqDVVF9sp6bWEhaOnTTJCLU6oG23uUSSA/59sJmwDJUk7 6J3VGO1An4Jte9WX7qkVrSBNO5cOOhaFiFXIeNxfOioOPctBwxKiHDJnzVud8ipz R+tnUI/8hEvyJ7GZFezyZxmMnFs0P2DEYAkaN+hBs/nUjx0dKUg= =YxaS -----END PGP SIGNATURE----- Merge tag 'docs-6.14' of git://git.lwn.net/linux Pull Documentation updates from Jonathan Corbet: - Quite a bit of Chinese and Spanish translation work - Clarifying that Git commit IDs >12chars are OK - A new nvme-multipath document - A reorganization of the admin-guide top-level page to make it readable - Clarification of the role of Acked-by and maintainer discretion on their acceptance - Some reorganization of debugging-oriented docs ... and typo fixes, documentation updates, etc as usual * tag 'docs-6.14' of git://git.lwn.net/linux: (50 commits) Documentation: Fix x86_64 UEFI outdated references to elilo Documentation/sysctl: Add timer_migration to kernel.rst docs/mm: Physical memory: Remove zone_t docs: submitting-patches: clarify that signers may use their discretion on tags docs: submitting-patches: clarify difference between Acked-by and Reviewed-by docs: submitting-patches: clarify Acked-by and introduce "# Suffix" Documentation: bug-hunting.rst: remove odd contact information docs/zh_CN: Add sak index Chinese translation doc: module: DEFAULT_SYMBOL_NAMESPACE must be defined before #includes doc: module: Fix documented type of namespace Documentation/kernel-parameters: Fix a reference to vga-softcursor.rst docs/zh_CN: Add landlock index Chinese translation Documentation: Fix typo localmodonfig -> localmodconfig overlayfs.rst: Fix and improve grammar docs/zh_CN: Add siphash index Chinese translation docs/zh_CN: Add security IMA-templates Chinese translation docs/zh_CN: Add security digsig Chinese translation Align git commit ID abbreviation guidelines and checks docs: process: submitting-patches: split canonical patch format section docs/zh_CN: Add security lsm Chinese translation ... |
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Linus Torvalds
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858df1de21 |
Miscellaneous x86 cleanups and typo fixes, and also the removal
of the "disablelapic" boot parameter. Signed-off-by: Ingo Molnar <mingo@kernel.org> -----BEGIN PGP SIGNATURE----- iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmePTD8RHG1pbmdvQGtl cm5lbC5vcmcACgkQEnMQ0APhK1jf5g//Wo1WKUXukRrBANr2nIlx9B7xJliRmUxv mJ0VKo49YPl6C34fjSHhBs3+nPbYD+CyWVKAz5PqkfkFRGBgpQi26EnyKaIhLVFW HWhW5vQm/FJfzBIrfFg7g/H1PK+rEYa4mv8JF9vhwp7BOfuqx4ABGKWQnrvOGg2B VivE5k7/kxWRPTg45Kgb1iwlS2gcfWCRi9qdCzdJgY/4XYE6k6hKeV0PgTT3Vojf pZKsgZRq8tzMaX75obtyyrX3TWj0nkRec0XbgyXBFvlFh/l3e0RswxzGGAjrC1XP R+qmscdCkczUwRGc1mGj9MoCqMRRffU6/hTNsjqu8o7Q2gzZzXWHcUc+X7UwOeKZ 2guxOj4iagdn7+mIso6uAjY+OOdFVw7/C8ysbCmwo3MiaDsfaK2NkdBoT2xDWuIw NP/45RMpTIsgL0wG6upzXXApKgYxfWhNSq+oHDF4/TjWY4i779hjMghvtX1BI7yb LXIh2SsRcnmEPl42UGaz6xmdmkulWZPPxI5rghixU48Eazkngfp7ZTHYpm5NFoRP Qc3JNcKo7rGmkoo/sA7uwawjnaTz/H77SDNjfAufzjVAKidvUqW6xaK/8JM1fq0n du+9sQN5MrAqdKx5Lu624s/7ektwkDeUdQFGazqS9y0GBT25T9Rw+LQDuec7BG3p v8sok4IaPA0= =Hzj3 -----END PGP SIGNATURE----- Merge tag 'x86-cleanups-2025-01-21' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 cleanups from Ingo Molnar: "Miscellaneous x86 cleanups and typo fixes, and also the removal of the 'disablelapic' boot parameter" * tag 'x86-cleanups-2025-01-21' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/ioapic: Remove a stray tab in the IO-APIC type string x86/cpufeatures: Remove "AMD" from the comments to the AMD-specific leaf Documentation/kernel-parameters: Fix a typo in kvm.enable_virt_at_load text x86/cpu: Fix typo in x86_match_cpu()'s doc x86/apic: Remove "disablelapic" cmdline option Documentation: Merge x86-specific boot options doc into kernel-parameters.txt x86/ioremap: Remove unused size parameter in remapping functions x86/ioremap: Simplify setup_data mapping variants x86/boot/compressed: Remove unused header includes from kaslr.c |
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Linus Torvalds
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6c4aa896eb |
Performance events changes for v6.14:
- Seqlock optimizations that arose in a perf context and were
merged into the perf tree:
- seqlock: Add raw_seqcount_try_begin (Suren Baghdasaryan)
- mm: Convert mm_lock_seq to a proper seqcount ((Suren Baghdasaryan)
- mm: Introduce mmap_lock_speculate_{try_begin|retry} (Suren Baghdasaryan)
- mm/gup: Use raw_seqcount_try_begin() (Peter Zijlstra)
- Core perf enhancements:
- Reduce 'struct page' footprint of perf by mapping pages
in advance (Lorenzo Stoakes)
- Save raw sample data conditionally based on sample type (Yabin Cui)
- Reduce sampling overhead by checking sample_type in
perf_sample_save_callchain() and perf_sample_save_brstack() (Yabin Cui)
- Export perf_exclude_event() (Namhyung Kim)
- Uprobes scalability enhancements: (Andrii Nakryiko)
- Simplify find_active_uprobe_rcu() VMA checks
- Add speculative lockless VMA-to-inode-to-uprobe resolution
- Simplify session consumer tracking
- Decouple return_instance list traversal and freeing
- Ensure return_instance is detached from the list before freeing
- Reuse return_instances between multiple uretprobes within task
- Guard against kmemdup() failing in dup_return_instance()
- AMD core PMU driver enhancements:
- Relax privilege filter restriction on AMD IBS (Namhyung Kim)
- AMD RAPL energy counters support: (Dhananjay Ugwekar)
- Introduce topology_logical_core_id() (K Prateek Nayak)
- Remove the unused get_rapl_pmu_cpumask() function
- Remove the cpu_to_rapl_pmu() function
- Rename rapl_pmu variables
- Make rapl_model struct global
- Add arguments to the init and cleanup functions
- Modify the generic variable names to *_pkg*
- Remove the global variable rapl_msrs
- Move the cntr_mask to rapl_pmus struct
- Add core energy counter support for AMD CPUs
- Intel core PMU driver enhancements:
- Support RDPMC 'metrics clear mode' feature (Kan Liang)
- Clarify adaptive PEBS processing (Kan Liang)
- Factor out functions for PEBS records processing (Kan Liang)
- Simplify the PEBS records processing for adaptive PEBS (Kan Liang)
- Intel uncore driver enhancements: (Kan Liang)
- Convert buggy pmu->func_id use to pmu->registered
- Support more units on Granite Rapids
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'perf-core-2025-01-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull performance events updates from Ingo Molnar:
"Seqlock optimizations that arose in a perf context and were merged
into the perf tree:
- seqlock: Add raw_seqcount_try_begin (Suren Baghdasaryan)
- mm: Convert mm_lock_seq to a proper seqcount (Suren Baghdasaryan)
- mm: Introduce mmap_lock_speculate_{try_begin|retry} (Suren
Baghdasaryan)
- mm/gup: Use raw_seqcount_try_begin() (Peter Zijlstra)
Core perf enhancements:
- Reduce 'struct page' footprint of perf by mapping pages in advance
(Lorenzo Stoakes)
- Save raw sample data conditionally based on sample type (Yabin Cui)
- Reduce sampling overhead by checking sample_type in
perf_sample_save_callchain() and perf_sample_save_brstack() (Yabin
Cui)
- Export perf_exclude_event() (Namhyung Kim)
Uprobes scalability enhancements: (Andrii Nakryiko)
- Simplify find_active_uprobe_rcu() VMA checks
- Add speculative lockless VMA-to-inode-to-uprobe resolution
- Simplify session consumer tracking
- Decouple return_instance list traversal and freeing
- Ensure return_instance is detached from the list before freeing
- Reuse return_instances between multiple uretprobes within task
- Guard against kmemdup() failing in dup_return_instance()
AMD core PMU driver enhancements:
- Relax privilege filter restriction on AMD IBS (Namhyung Kim)
AMD RAPL energy counters support: (Dhananjay Ugwekar)
- Introduce topology_logical_core_id() (K Prateek Nayak)
- Remove the unused get_rapl_pmu_cpumask() function
- Remove the cpu_to_rapl_pmu() function
- Rename rapl_pmu variables
- Make rapl_model struct global
- Add arguments to the init and cleanup functions
- Modify the generic variable names to *_pkg*
- Remove the global variable rapl_msrs
- Move the cntr_mask to rapl_pmus struct
- Add core energy counter support for AMD CPUs
Intel core PMU driver enhancements:
- Support RDPMC 'metrics clear mode' feature (Kan Liang)
- Clarify adaptive PEBS processing (Kan Liang)
- Factor out functions for PEBS records processing (Kan Liang)
- Simplify the PEBS records processing for adaptive PEBS (Kan Liang)
Intel uncore driver enhancements: (Kan Liang)
- Convert buggy pmu->func_id use to pmu->registered
- Support more units on Granite Rapids"
* tag 'perf-core-2025-01-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (33 commits)
perf: map pages in advance
perf/x86/intel/uncore: Support more units on Granite Rapids
perf/x86/intel/uncore: Clean up func_id
perf/x86/intel: Support RDPMC metrics clear mode
uprobes: Guard against kmemdup() failing in dup_return_instance()
perf/x86: Relax privilege filter restriction on AMD IBS
perf/core: Export perf_exclude_event()
uprobes: Reuse return_instances between multiple uretprobes within task
uprobes: Ensure return_instance is detached from the list before freeing
uprobes: Decouple return_instance list traversal and freeing
uprobes: Simplify session consumer tracking
uprobes: add speculative lockless VMA-to-inode-to-uprobe resolution
uprobes: simplify find_active_uprobe_rcu() VMA checks
mm: introduce mmap_lock_speculate_{try_begin|retry}
mm: convert mm_lock_seq to a proper seqcount
mm/gup: Use raw_seqcount_try_begin()
seqlock: add raw_seqcount_try_begin
perf/x86/rapl: Add core energy counter support for AMD CPUs
perf/x86/rapl: Move the cntr_mask to rapl_pmus struct
perf/x86/rapl: Remove the global variable rapl_msrs
...
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Linus Torvalds
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13b6931c44 |
- A segmented Reverse Map table (RMP) is a across-nodes distributed
table of sorts which contains per-node descriptors of each node-local 4K page, denoting its ownership (hypervisor, guest, etc) in the realm of confidential computing. Add support for such a table in order to improve referential locality when accessing or modifying RMP table entries - Add support for reading the TSC in SNP guests by removing any interference or influence the hypervisor might have, with the goal of making a confidential guest even more independent from the hypervisor -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmeOYLsACgkQEsHwGGHe VUrywg//WBuywe3+TNPwF0Iw8becqtD7lKMftmUoqpcf20JhiHSCexb+3/r7U2Kb WL1/T5cxX1rA45HzkwovUljlvin8B9bdpY40dUqrKFPMnWLfs4ru0HPA6UxPBsAq r/8XrXuRrI22MLbrAeQ2xSt8dqw3DpbJyUcyr0qOb6OsbtAy05uElYCzMSyzT06F QsTmenosuJqSo1gIGTxfU4nKyd1o8EJ5b1ThK11hvZaIOffgLjEU6g39cG9AeF4X TOkh9CdIlQc3ot14rJeWMy15YEW+xBdXdMEv0ZPOSZiKzTHA7wwdl0VmPm1EK57f BQkZikuoJezJA0r5wSwVgslTaYO0GTXNewwL5jxK1mqRgoK06IgC6xAkX8N7NTYL K6DX+tfaKjSJGY1z9TYOzs+wGV4MBAXmbLwnuhcPumkTYXPFbRFZqx6ec2BLIU+Y bZfwhlr3q+bfFeBYMzyWPHJ87JinOjwu4Ah0uLVmkoRtgb0S3pIdlyRYZAcEl6fn Tgfu0/RNLGGsH/a3BF7AQdt+hOv1ms5hEMYXg++30uC59LR8XbuKnLdUPRi0nVeD e9xyxFybu5ySesnnXabtaO9bSUF+8HV4nkclKglFvuHpLMQ5GlPxTnBj1V1podYR l12G2htXKsSV5JJK4x+WfYBe6Nn3tbcpgZD8M8g0lso8kejqMjs= =hh1m -----END PGP SIGNATURE----- Merge tag 'x86_sev_for_v6.14_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 SEV updates from Borislav Petkov: - A segmented Reverse Map table (RMP) is a across-nodes distributed table of sorts which contains per-node descriptors of each node-local 4K page, denoting its ownership (hypervisor, guest, etc) in the realm of confidential computing. Add support for such a table in order to improve referential locality when accessing or modifying RMP table entries - Add support for reading the TSC in SNP guests by removing any interference or influence the hypervisor might have, with the goal of making a confidential guest even more independent from the hypervisor * tag 'x86_sev_for_v6.14_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/sev: Add the Secure TSC feature for SNP guests x86/tsc: Init the TSC for Secure TSC guests x86/sev: Mark the TSC in a secure TSC guest as reliable x86/sev: Prevent RDTSC/RDTSCP interception for Secure TSC enabled guests x86/sev: Prevent GUEST_TSC_FREQ MSR interception for Secure TSC enabled guests x86/sev: Change TSC MSR behavior for Secure TSC enabled guests x86/sev: Add Secure TSC support for SNP guests x86/sev: Relocate SNP guest messaging routines to common code x86/sev: Carve out and export SNP guest messaging init routines virt: sev-guest: Replace GFP_KERNEL_ACCOUNT with GFP_KERNEL virt: sev-guest: Remove is_vmpck_empty() helper x86/sev/docs: Document the SNP Reverse Map Table (RMP) x86/sev: Add full support for a segmented RMP table x86/sev: Treat the contiguous RMP table as a single RMP segment x86/sev: Map only the RMP table entries instead of the full RMP range x86/sev: Move the SNP probe routine out of the way x86/sev: Require the RMPREAD instruction after Zen4 x86/sev: Add support for the RMPREAD instruction x86/sev: Prepare for using the RMPREAD instruction to access the RMP |
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Nir Lichtman
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6912bdb7c6 |
Documentation: Fix x86_64 UEFI outdated references to elilo
Problem: The x86_64 UEFI doc references Elilo which is an unmaintained/orphaned bootloader project. Also, on x86_64 a bootloader is technically not actually required since there is support for the Linux EFI stub. Solution: Remove the references to Elilo from the doc and refer to the EFI stub doc page, update steps accordingly, and add more details about creation of the EFI partition to improve clarity. Signed-off-by: Nir Lichtman <nir@lichtman.org> Link: https://lore.kernel.org/r/20250108113522.GA897677@lichtman.org Signed-off-by: Jonathan Corbet <corbet@lwn.net> |
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Tom Lendacky
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21fc6178e9 |
x86/sev/docs: Document the SNP Reverse Map Table (RMP)
Update the AMD memory encryption documentation to include information on the Reverse Map Table (RMP) and the two table formats. Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Reviewed-by: Nikunj A Dadhania <nikunj@amd.com> Reviewed-by: Neeraj Upadhyay <Neeraj.Upadhyay@amd.com> Link: https://lore.kernel.org/r/d3feea54912ad9ff2fc261223db691ca11fc547f.1733172653.git.thomas.lendacky@amd.com |
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Tony Luck
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faf6ef6737 |
x86/resctrl: Document the new "mba_MBps_event" file
Add a section to document a new read/write file that shows/sets the memory bandwidth event used to control bandwidth used by each CTRL_MON group. Signed-off-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Reviewed-by: Reinette Chatre <reinette.chatre@intel.com> Tested-by: Babu Moger <babu.moger@amd.com> Link: https://lore.kernel.org/r/20241206163148.83828-9-tony.luck@intel.com |
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Andy Shevchenko
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9fc78ffaf0 |
x86/Documentation: Elaborate Intel MID device list
Intel MID includes several SoCs in the family, elaborate this in the respective line of the documentation. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Dave Hansen <dave.hansen@linux.intel.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20241128152546.2396782-4-andriy.shevchenko@linux.intel.com |
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Andy Shevchenko
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efba597079 |
x86/Documentation: Align Note Blocks style
The file collects pieces from different epochs and hence has unaligned style of the Note Blocks (in terms of reStructuredText specification). Align the style to be the same structured: - start the text under 't' column from '.. note::' directive - convert a couple of plain text notes to use '.. note::' directive Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Dave Hansen <dave.hansen@linux.intel.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20241128152546.2396782-3-andriy.shevchenko@linux.intel.com |
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Andy Shevchenko
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f23d79d6c4 |
x86/Documentation: Make Literal Blocks to follow reStructuredText specification
The file collects pieces from different epochs and hence has unaligned style of the Literal Blocks (in terms of reStructuredText specification). Make the Literal Blocks to follow the reStructuredText specification While at it, make the C-like code more C and follow the Kernel Coding style in them (after satisfying rST specification). Suggested-by: Ingo Molnar <mingo@kernel.org> Suggested-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Dave Hansen <dave.hansen@linux.intel.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20241128152546.2396782-2-andriy.shevchenko@linux.intel.com |
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Borislav Petkov (AMD)
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ab0e7f2076 |
Documentation: Merge x86-specific boot options doc into kernel-parameters.txt
Documentation/arch/x86/x86_64/boot-options.rst is causing unnecessary confusion by being a second place where one can put x86 boot options. Move them into the main one. Drop removed ones like "acpi=ht", while at it. Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Reviewed-by: Sohil Mehta <sohil.mehta@intel.com> Link: https://lore.kernel.org/r/20241202190011.11979-1-bp@kernel.org |
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K Prateek Nayak
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e4b4443477 |
x86/topology: Introduce topology_logical_core_id()
On x86, topology_core_id() returns a unique core ID within the PKG domain. Looking at match_smt() suggests that a core ID just needs to be unique within a LLC domain. For use cases such as the core RAPL PMU, there exists a need for a unique core ID across the entire system with multiple PKG domains. Introduce topology_logical_core_id() to derive a unique core ID across the system. Signed-off-by: K Prateek Nayak <kprateek.nayak@amd.com> Signed-off-by: Dhananjay Ugwekar <Dhananjay.Ugwekar@amd.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Zhang Rui <rui.zhang@intel.com> Reviewed-by: "Gautham R. Shenoy" <gautham.shenoy@amd.com> Tested-by: K Prateek Nayak <kprateek.nayak@amd.com> Tested-by: Oleksandr Natalenko <oleksandr@natalenko.name> Link: https://lore.kernel.org/r/20241115060805.447565-3-Dhananjay.Ugwekar@amd.com |
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Andy Shevchenko
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be4ca6c53e |
x86/Documentation: Update algo in init_size description of boot protocol
The init_size description of boot protocol has an example of the runtime start address for the compressed bzImage. For non-relocatable kernel it relies on the pref_address value (if not 0), but for relocatable case only pays respect to the load_addres and kernel_alignment, and it is inaccurate for the latter. Boot loader must consider the pref_address as the Linux kernel relocates to it before being decompressed as nicely described in this commit message a year ago: |
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Linus Torvalds
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fcb3ad4366 |
platform-drivers-x86 for v6.13-1
Highlights: - alienware-wmi: WMAX thermal interface support - amd/hsmp: Split ACPI and platform device based drivers - amd/x3d_vcache: X3D frequency/cache mode switching support - asus-wmi: Thermal policy fixes - intel/pmt: Disable C1 auto-demotion in suspend to allow entering the deepest C-states - intel-hid: Fix volume buttons on Thinkpad X12 Detachable Tablet Gen 1 - intel_scu_ipc: Replace "workaround" with 32-bit IO - panasonic-laptop: Correct *_show() function error handling - p2sb: Gemini Lake P2SB devfn correction - think-lmi: Admin/System certificate authentication support - wmi: Disable WMI devices for shutdown, refactoring continues - x86-android-tablets: Vexia EDU ATLA 10 tablet support - platform/surface: Surface Pro 9 5G (Arm/QCOM) support - Miscellaneous cleanups / refactoring / improvements Expected conflicts: - hsmp driver split into two vs constifying bin_attribute [1] [1] https://lore.kernel.org/all/20241107212645.41252436@canb.auug.org.au/ The following is an automated shortlog grouped by driver: alienware-wmi: - added force module parameters - added platform profile support - Adds support to Alienware x17 R2 - alienware_wmax_command() is now input size agnostic - create_thermal_profile() no longer brute-forces IDs - extends the list of supported models - fixed indentation and clean up - Fix spelling mistake "requieres" -> "requires" - order alienware_quirks[] alphabetically - WMAX interface documentation amd: amd_3d_vcache: - Add AMD 3D V-Cache optimizer driver - Add sysfs ABI documentation amd/hsmp: - Add new error code and error logs - Change generic plat_dev name to hsmp_pdev - Change the error type - Convert amd_hsmp_rdwr() to a function pointer - Create hsmp/ directory - Create separate ACPI, plat and common drivers - Create wrapper function init_acpi() - Make hsmp_pdev static instead of global - mark hsmp_msg_desc_table[] as maybe_unused - Move ACPI code to acpi.c - Move platform device specific code to plat.c - Move structure and macros to header file - Use dev_groups in the driver structure - Use name space while exporting module symbols amd/pmf: - Switch to platform_get_resource() and devm_ioremap_resource() - Use dev_err_probe() to simplify error handling asus-laptop: - prefer strscpy() over strcpy() asus-wmi: - Fix inconsistent use of thermal policies - Use platform_profile_cycle() classmate-laptop: - Replace snprintf in show functions with sysfs_emit compal-laptop: - use sysfs_emit() instead of sprintf() dell-dcdbase: - Replace snprintf in show functions with sysfs_emit Documentation: alienware-wmi: - Describe THERMAL_INFORMATION operation 0x02 eeepc-laptop: - use sysfs_emit() instead of sprintf() hp: hp-bioscfg: - remove redundant if statement intel: - Add 'intel' prefix to the modules automatically intel-hid: - fix volume buttons on Thinkpad X12 Detachable Tablet Gen 1 intel/pmc: - Disable C1 auto-demotion during suspend - Refactor platform resume functions to use cnl_resume() intel/pmt: - allow user offset for PMT callbacks - Correct the typo 'ACCCESS_LOCAL' intel_scu_ipc: - Convert to check for errors first - Don't use "proxy" headers - Replace workaround by 32-bit IO - Save a copy of the entire struct intel_scu_ipc_data - Simplify code with cleanup helpers - Unify the flow in pwr_reg_rdwr() intel/vsec: - Remove a useless mutex MAINTAINERS: - adjust file entry in INTEL TPMI DRIVER - Change AMD PMF driver status to "Supported" - Update ISHTP ECLITE maintainer entry p2sb: - Cache correct PCI bar for P2SB on Gemini Lake panasonic-laptop: - Return errno correctly in show callback surface: aggregator_registry: - Add Surface Pro 9 5G Switch back to struct platform_driver:: - remove() think-lmi: - Add certificate as mechanism - Allow empty admin password - improve check if BIOS account security enabled - Multi-certificate support wmi: - Implement proper shutdown handling - Introduce to_wmi_driver() - Remove wmi_block_list - Replace dev_to_wdev() with to_wmi_device() x86: acer-wmi: - remove unused macros x86-android-tablets: - Add get_i2c_adap_by_handle() helper - Add support for getting i2c_adapter by PCI parent devname() - Add support for Vexia EDU ATLA 10 tablet -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQSCSUwRdwTNL2MhaBlZrE9hU+XOMQUCZz3IswAKCRBZrE9hU+XO McdKAQCY9gIuqtHpYK0QIQYMoZOWhpiCzfZ96DDHqt4Wknh6NgD/YY6eESyDokyB 4BkujKwqo3cdGNPjIBy41jnNjekNsw8= =QEd2 -----END PGP SIGNATURE----- Merge tag 'platform-drivers-x86-v6.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86 Pull x86 platform driver updates from Ilpo Järvinen: - alienware WMAX thermal interface support - Split ACPI and platform device based amd/hsmp drivers - AMD X3D frequency/cache mode switching support - asus thermal policy fixes - Disable C1 auto-demotion in suspend to allow entering the deepest C-states - Fix volume buttons on Thinkpad X12 Detachable Tablet Gen 1 - Replace intel_scu_ipc "workaround" with 32-bit IO - Correct *_show() function error handling in panasonic-laptop - Gemini Lake P2SB devfn correction - think-lmi Admin/System certificate authentication support - Disable WMI devices for shutdown, refactoring continues - Vexia EDU ATLA 10 tablet support - Surface Pro 9 5G (Arm/QCOM) support - Misc cleanups / refactoring / improvements * tag 'platform-drivers-x86-v6.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (69 commits) platform/x86: p2sb: Cache correct PCI bar for P2SB on Gemini Lake platform/x86: panasonic-laptop: Return errno correctly in show callback Documentation: alienware-wmi: Describe THERMAL_INFORMATION operation 0x02 alienware-wmi: create_thermal_profile() no longer brute-forces IDs alienware-wmi: Adds support to Alienware x17 R2 alienware-wmi: extends the list of supported models alienware-wmi: order alienware_quirks[] alphabetically platform/x86/intel/pmt: allow user offset for PMT callbacks platform/x86/amd/hsmp: Change the error type platform/x86/amd/hsmp: Add new error code and error logs platform/x86/amd: amd_3d_vcache: Add sysfs ABI documentation platform/x86/amd: amd_3d_vcache: Add AMD 3D V-Cache optimizer driver intel-hid: fix volume buttons on Thinkpad X12 Detachable Tablet Gen 1 platform/x86/amd/hsmp: mark hsmp_msg_desc_table[] as maybe_unused platform/x86: asus-wmi: Use platform_profile_cycle() platform/x86: asus-wmi: Fix inconsistent use of thermal policies platform/x86: hp: hp-bioscfg: remove redundant if statement MAINTAINERS: Update ISHTP ECLITE maintainer entry platform/x86: x86-android-tablets: Add support for Vexia EDU ATLA 10 tablet platform/x86: x86-android-tablets: Add support for getting i2c_adapter by PCI parent devname() ... |
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Linus Torvalds
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a5c93bfec0 |
x86/mm changes for v6.13:
- x86/mm/tlb: Put cpumask_test_cpu() check in switch_mm_irqs_off()
under CONFIG_DEBUG_VM, to micro-optimize the context-switching
code (Rik van Riel)
- x86/mm/doc: Add missing details in virtual memory layout (Kirill A. Shutemov)
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'x86-mm-2024-11-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 mm updates from Ingo Molnar:
- Put cpumask_test_cpu() check in switch_mm_irqs_off() under
CONFIG_DEBUG_VM, to micro-optimize the context-switching code (Rik
van Riel)
- Add missing details in virtual memory layout (Kirill A. Shutemov)
* tag 'x86-mm-2024-11-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/mm/tlb: Put cpumask_test_cpu() check in switch_mm_irqs_off() under CONFIG_DEBUG_VM
x86/mm/doc: Add missing details in virtual memory layout
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Linus Torvalds
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0892d74213 |
x86/splitlock changes for v6.13:
- Move Split and Bus lock code to a dedicated file (Ravi Bangoria) - Add split/bus lock support for AMD (Ravi Bangoria) Signed-off-by: Ingo Molnar <mingo@kernel.org> -----BEGIN PGP SIGNATURE----- iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmc7gMERHG1pbmdvQGtl cm5lbC5vcmcACgkQEnMQ0APhK1hEaQ//YRk2Dc3VkiwC+ZE44Bi4ZlztACzjvkL/ sFjOqX4dSWJLMFDPfISGGEN4e20IFA46uYXwoZQOZEz5RY4tPaJYw+o1aBP5YYEN EEv4iRc20FIIYckkyCShP00dKoZlmb6FbxyUysRRwZW0XJuMVLyJnGNmZs0peVvt 5c8+7erl0CPN9RaR66lULT4YenyvUZ7DChfeB3a1LbazC5+IrEumiIysLJUKj6zN 075+FeQ084156sFR+LUSjblxLKzY/OqT/727osST2WlMo/HWLIJImCXodHMHG+LC dRI0NFFU9zn2G6rGcoltLNsU/TSJfaWoGS8pm6c96kItEZly/BFz5MF1IQIbCfDx YFJpil1zJQQeV3FUXldhKGoSio0fv0KWcqC0TLjj/DhqprjdktJGuGIX6ChmkytA TDLZPWZxInZdVnWVMBuaJ6defMRBLART02u9DRIoXYEX6aDLjJ1JFTRe5hU9vVab cq+GR3ZSeDM9gSGjfW6dGG5746KXX+Wwxv4stxSoygSxmrLPH38CrZ5m66edtKzq P+V2/utvhdHZSKawsIpM4Xz5u7fweySkVFQjJyEEeMWyXnfC+alP9OUsVTKS8mFa zKbX7mEgnBDcEE9w6O5itL4nIgB3Kooci5uEWDRTAYUee82Hqk09Ycyb5XQkJ7bs Cl65CoY+XAA= =QpKp -----END PGP SIGNATURE----- Merge tag 'x86-splitlock-2024-11-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 splitlock updates from Ingo Molnar: - Move Split and Bus lock code to a dedicated file (Ravi Bangoria) - Add split/bus lock support for AMD (Ravi Bangoria) * tag 'x86-splitlock-2024-11-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/bus_lock: Add support for AMD x86/split_lock: Move Split and Bus lock code to a dedicated file |
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Kirill A. Shutemov
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035c5e2143 |
x86/mm/doc: Add missing details in virtual memory layout
Improve memory layout documentation: - Document 4kB guard hole at the end of userspace. See TASK_SIZE_MAX definition. - Divide the description of the non-canonical hole into two parts: userspace and kernel sides. - Mention the effect of LAM on the non-canonical range. Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Link: https://lore.kernel.org/all/20241031084946.2243440-1-kirill.shutemov%40linux.intel.com |
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Suma Hegde
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7d3135d163
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platform/x86/amd/hsmp: Create separate ACPI, plat and common drivers
Separate the probes for HSMP ACPI and platform device drivers. Provide a Kconfig option to choose between ACPI or the platform device based driver. The common code which is the core part of the HSMP driver maintained at hsmp.c is guarded by AMD_HSMP config and is selected by these two driver configs. This will be built into separate hsmp_common.ko module and acpi as hsmp_acpi and plat as amd_hsmp respectively. Also add "|| COMPILE_TEST" clause in Kconfig to get build coverage for HSMP. Signed-off-by: Suma Hegde <suma.hegde@amd.com> Reviewed-by: Naveen Krishna Chatradhi <naveenkrishna.chatradhi@amd.com> Link: https://lore.kernel.org/r/20241021111428.2676884-8-suma.hegde@amd.com [ij: Fixed doc to use pre-formatted text for the ACPI dump.] Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> |
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Pavan Kumar Paluri
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2db67aaca5 |
x86/virt: Provide "nosnp" boot option for sev kernel command line
Provide a "nosnp" kernel command line option to prevent enabling of the RMP and SEV-SNP features in the host/hypervisor. Not initializing the RMP removes system overhead associated with RMP checks. [ bp: Actually make it a HV-only cmdline option. ] Co-developed-by: Eric Van Tassell <Eric.VanTassell@amd.com> Signed-off-by: Eric Van Tassell <Eric.VanTassell@amd.com> Signed-off-by: Pavan Kumar Paluri <papaluri@amd.com> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Reviewed-by: Tom Lendacky <thomas.lendacky@amd.com> Link: https://lore.kernel.org/r/20241014130948.1476946-3-papaluri@amd.com |
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Linus Torvalds
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617a814f14 |
ALong with the usual shower of singleton patches, notable patch series in
this pull request are:
"Align kvrealloc() with krealloc()" from Danilo Krummrich. Adds
consistency to the APIs and behaviour of these two core allocation
functions. This also simplifies/enables Rustification.
"Some cleanups for shmem" from Baolin Wang. No functional changes - mode
code reuse, better function naming, logic simplifications.
"mm: some small page fault cleanups" from Josef Bacik. No functional
changes - code cleanups only.
"Various memory tiering fixes" from Zi Yan. A small fix and a little
cleanup.
"mm/swap: remove boilerplate" from Yu Zhao. Code cleanups and
simplifications and .text shrinkage.
"Kernel stack usage histogram" from Pasha Tatashin and Shakeel Butt. This
is a feature, it adds new feilds to /proc/vmstat such as
$ grep kstack /proc/vmstat
kstack_1k 3
kstack_2k 188
kstack_4k 11391
kstack_8k 243
kstack_16k 0
which tells us that 11391 processes used 4k of stack while none at all
used 16k. Useful for some system tuning things, but partivularly useful
for "the dynamic kernel stack project".
"kmemleak: support for percpu memory leak detect" from Pavel Tikhomirov.
Teaches kmemleak to detect leaksage of percpu memory.
"mm: memcg: page counters optimizations" from Roman Gushchin. "3
independent small optimizations of page counters".
"mm: split PTE/PMD PT table Kconfig cleanups+clarifications" from David
Hildenbrand. Improves PTE/PMD splitlock detection, makes powerpc/8xx work
correctly by design rather than by accident.
"mm: remove arch_make_page_accessible()" from David Hildenbrand. Some
folio conversions which make arch_make_page_accessible() unneeded.
"mm, memcg: cg2 memory{.swap,}.peak write handlers" fro David Finkel.
Cleans up and fixes our handling of the resetting of the cgroup/process
peak-memory-use detector.
"Make core VMA operations internal and testable" from Lorenzo Stoakes.
Rationalizaion and encapsulation of the VMA manipulation APIs. With a
view to better enable testing of the VMA functions, even from a
userspace-only harness.
"mm: zswap: fixes for global shrinker" from Takero Funaki. Fix issues in
the zswap global shrinker, resulting in improved performance.
"mm: print the promo watermark in zoneinfo" from Kaiyang Zhao. Fill in
some missing info in /proc/zoneinfo.
"mm: replace follow_page() by folio_walk" from David Hildenbrand. Code
cleanups and rationalizations (conversion to folio_walk()) resulting in
the removal of follow_page().
"improving dynamic zswap shrinker protection scheme" from Nhat Pham. Some
tuning to improve zswap's dynamic shrinker. Significant reductions in
swapin and improvements in performance are shown.
"mm: Fix several issues with unaccepted memory" from Kirill Shutemov.
Improvements to the new unaccepted memory feature,
"mm/mprotect: Fix dax puds" from Peter Xu. Implements mprotect on DAX
PUDs. This was missing, although nobody seems to have notied yet.
"Introduce a store type enum for the Maple tree" from Sidhartha Kumar.
Cleanups and modest performance improvements for the maple tree library
code.
"memcg: further decouple v1 code from v2" from Shakeel Butt. Move more
cgroup v1 remnants away from the v2 memcg code.
"memcg: initiate deprecation of v1 features" from Shakeel Butt. Adds
various warnings telling users that memcg v1 features are deprecated.
"mm: swap: mTHP swap allocator base on swap cluster order" from Chris Li.
Greatly improves the success rate of the mTHP swap allocation.
"mm: introduce numa_memblks" from Mike Rapoport. Moves various disparate
per-arch implementations of numa_memblk code into generic code.
"mm: batch free swaps for zap_pte_range()" from Barry Song. Greatly
improves the performance of munmap() of swap-filled ptes.
"support large folio swap-out and swap-in for shmem" from Baolin Wang.
With this series we no longer split shmem large folios into simgle-page
folios when swapping out shmem.
"mm/hugetlb: alloc/free gigantic folios" from Yu Zhao. Nice performance
improvements and code reductions for gigantic folios.
"support shmem mTHP collapse" from Baolin Wang. Adds support for
khugepaged's collapsing of shmem mTHP folios.
"mm: Optimize mseal checks" from Pedro Falcato. Fixes an mprotect()
performance regression due to the addition of mseal().
"Increase the number of bits available in page_type" from Matthew Wilcox.
Increases the number of bits available in page_type!
"Simplify the page flags a little" from Matthew Wilcox. Many legacy page
flags are now folio flags, so the page-based flags and their
accessors/mutators can be removed.
"mm: store zero pages to be swapped out in a bitmap" from Usama Arif. An
optimization which permits us to avoid writing/reading zero-filled zswap
pages to backing store.
"Avoid MAP_FIXED gap exposure" from Liam Howlett. Fixes a race window
which occurs when a MAP_FIXED operqtion is occurring during an unrelated
vma tree walk.
"mm: remove vma_merge()" from Lorenzo Stoakes. Major rotorooting of the
vma_merge() functionality, making ot cleaner, more testable and better
tested.
"misc fixups for DAMON {self,kunit} tests" from SeongJae Park. Minor
fixups of DAMON selftests and kunit tests.
"mm: memory_hotplug: improve do_migrate_range()" from Kefeng Wang. Code
cleanups and folio conversions.
"Shmem mTHP controls and stats improvements" from Ryan Roberts. Cleanups
for shmem controls and stats.
"mm: count the number of anonymous THPs per size" from Barry Song. Expose
additional anon THP stats to userspace for improved tuning.
"mm: finish isolate/putback_lru_page()" from Kefeng Wang: more folio
conversions and removal of now-unused page-based APIs.
"replace per-quota region priorities histogram buffer with per-context
one" from SeongJae Park. DAMON histogram rationalization.
"Docs/damon: update GitHub repo URLs and maintainer-profile" from SeongJae
Park. DAMON documentation updates.
"mm/vdpa: correct misuse of non-direct-reclaim __GFP_NOFAIL and improve
related doc and warn" from Jason Wang: fixes usage of page allocator
__GFP_NOFAIL and GFP_ATOMIC flags.
"mm: split underused THPs" from Yu Zhao. Improve THP=always policy - this
was overprovisioning THPs in sparsely accessed memory areas.
"zram: introduce custom comp backends API" frm Sergey Senozhatsky. Add
support for zram run-time compression algorithm tuning.
"mm: Care about shadow stack guard gap when getting an unmapped area" from
Mark Brown. Fix up the various arch_get_unmapped_area() implementations
to better respect guard areas.
"Improve mem_cgroup_iter()" from Kinsey Ho. Improve the reliability of
mem_cgroup_iter() and various code cleanups.
"mm: Support huge pfnmaps" from Peter Xu. Extends the usage of huge
pfnmap support.
"resource: Fix region_intersects() vs add_memory_driver_managed()" from
Huang Ying. Fix a bug in region_intersects() for systems with CXL memory.
"mm: hwpoison: two more poison recovery" from Kefeng Wang. Teaches a
couple more code paths to correctly recover from the encountering of
poisoned memry.
"mm: enable large folios swap-in support" from Barry Song. Support the
swapin of mTHP memory into appropriately-sized folios, rather than into
single-page folios.
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Merge tag 'mm-stable-2024-09-20-02-31' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull MM updates from Andrew Morton:
"Along with the usual shower of singleton patches, notable patch series
in this pull request are:
- "Align kvrealloc() with krealloc()" from Danilo Krummrich. Adds
consistency to the APIs and behaviour of these two core allocation
functions. This also simplifies/enables Rustification.
- "Some cleanups for shmem" from Baolin Wang. No functional changes -
mode code reuse, better function naming, logic simplifications.
- "mm: some small page fault cleanups" from Josef Bacik. No
functional changes - code cleanups only.
- "Various memory tiering fixes" from Zi Yan. A small fix and a
little cleanup.
- "mm/swap: remove boilerplate" from Yu Zhao. Code cleanups and
simplifications and .text shrinkage.
- "Kernel stack usage histogram" from Pasha Tatashin and Shakeel
Butt. This is a feature, it adds new feilds to /proc/vmstat such as
$ grep kstack /proc/vmstat
kstack_1k 3
kstack_2k 188
kstack_4k 11391
kstack_8k 243
kstack_16k 0
which tells us that 11391 processes used 4k of stack while none at
all used 16k. Useful for some system tuning things, but
partivularly useful for "the dynamic kernel stack project".
- "kmemleak: support for percpu memory leak detect" from Pavel
Tikhomirov. Teaches kmemleak to detect leaksage of percpu memory.
- "mm: memcg: page counters optimizations" from Roman Gushchin. "3
independent small optimizations of page counters".
- "mm: split PTE/PMD PT table Kconfig cleanups+clarifications" from
David Hildenbrand. Improves PTE/PMD splitlock detection, makes
powerpc/8xx work correctly by design rather than by accident.
- "mm: remove arch_make_page_accessible()" from David Hildenbrand.
Some folio conversions which make arch_make_page_accessible()
unneeded.
- "mm, memcg: cg2 memory{.swap,}.peak write handlers" fro David
Finkel. Cleans up and fixes our handling of the resetting of the
cgroup/process peak-memory-use detector.
- "Make core VMA operations internal and testable" from Lorenzo
Stoakes. Rationalizaion and encapsulation of the VMA manipulation
APIs. With a view to better enable testing of the VMA functions,
even from a userspace-only harness.
- "mm: zswap: fixes for global shrinker" from Takero Funaki. Fix
issues in the zswap global shrinker, resulting in improved
performance.
- "mm: print the promo watermark in zoneinfo" from Kaiyang Zhao. Fill
in some missing info in /proc/zoneinfo.
- "mm: replace follow_page() by folio_walk" from David Hildenbrand.
Code cleanups and rationalizations (conversion to folio_walk())
resulting in the removal of follow_page().
- "improving dynamic zswap shrinker protection scheme" from Nhat
Pham. Some tuning to improve zswap's dynamic shrinker. Significant
reductions in swapin and improvements in performance are shown.
- "mm: Fix several issues with unaccepted memory" from Kirill
Shutemov. Improvements to the new unaccepted memory feature,
- "mm/mprotect: Fix dax puds" from Peter Xu. Implements mprotect on
DAX PUDs. This was missing, although nobody seems to have notied
yet.
- "Introduce a store type enum for the Maple tree" from Sidhartha
Kumar. Cleanups and modest performance improvements for the maple
tree library code.
- "memcg: further decouple v1 code from v2" from Shakeel Butt. Move
more cgroup v1 remnants away from the v2 memcg code.
- "memcg: initiate deprecation of v1 features" from Shakeel Butt.
Adds various warnings telling users that memcg v1 features are
deprecated.
- "mm: swap: mTHP swap allocator base on swap cluster order" from
Chris Li. Greatly improves the success rate of the mTHP swap
allocation.
- "mm: introduce numa_memblks" from Mike Rapoport. Moves various
disparate per-arch implementations of numa_memblk code into generic
code.
- "mm: batch free swaps for zap_pte_range()" from Barry Song. Greatly
improves the performance of munmap() of swap-filled ptes.
- "support large folio swap-out and swap-in for shmem" from Baolin
Wang. With this series we no longer split shmem large folios into
simgle-page folios when swapping out shmem.
- "mm/hugetlb: alloc/free gigantic folios" from Yu Zhao. Nice
performance improvements and code reductions for gigantic folios.
- "support shmem mTHP collapse" from Baolin Wang. Adds support for
khugepaged's collapsing of shmem mTHP folios.
- "mm: Optimize mseal checks" from Pedro Falcato. Fixes an mprotect()
performance regression due to the addition of mseal().
- "Increase the number of bits available in page_type" from Matthew
Wilcox. Increases the number of bits available in page_type!
- "Simplify the page flags a little" from Matthew Wilcox. Many legacy
page flags are now folio flags, so the page-based flags and their
accessors/mutators can be removed.
- "mm: store zero pages to be swapped out in a bitmap" from Usama
Arif. An optimization which permits us to avoid writing/reading
zero-filled zswap pages to backing store.
- "Avoid MAP_FIXED gap exposure" from Liam Howlett. Fixes a race
window which occurs when a MAP_FIXED operqtion is occurring during
an unrelated vma tree walk.
- "mm: remove vma_merge()" from Lorenzo Stoakes. Major rotorooting of
the vma_merge() functionality, making ot cleaner, more testable and
better tested.
- "misc fixups for DAMON {self,kunit} tests" from SeongJae Park.
Minor fixups of DAMON selftests and kunit tests.
- "mm: memory_hotplug: improve do_migrate_range()" from Kefeng Wang.
Code cleanups and folio conversions.
- "Shmem mTHP controls and stats improvements" from Ryan Roberts.
Cleanups for shmem controls and stats.
- "mm: count the number of anonymous THPs per size" from Barry Song.
Expose additional anon THP stats to userspace for improved tuning.
- "mm: finish isolate/putback_lru_page()" from Kefeng Wang: more
folio conversions and removal of now-unused page-based APIs.
- "replace per-quota region priorities histogram buffer with
per-context one" from SeongJae Park. DAMON histogram
rationalization.
- "Docs/damon: update GitHub repo URLs and maintainer-profile" from
SeongJae Park. DAMON documentation updates.
- "mm/vdpa: correct misuse of non-direct-reclaim __GFP_NOFAIL and
improve related doc and warn" from Jason Wang: fixes usage of page
allocator __GFP_NOFAIL and GFP_ATOMIC flags.
- "mm: split underused THPs" from Yu Zhao. Improve THP=always policy.
This was overprovisioning THPs in sparsely accessed memory areas.
- "zram: introduce custom comp backends API" frm Sergey Senozhatsky.
Add support for zram run-time compression algorithm tuning.
- "mm: Care about shadow stack guard gap when getting an unmapped
area" from Mark Brown. Fix up the various arch_get_unmapped_area()
implementations to better respect guard areas.
- "Improve mem_cgroup_iter()" from Kinsey Ho. Improve the reliability
of mem_cgroup_iter() and various code cleanups.
- "mm: Support huge pfnmaps" from Peter Xu. Extends the usage of huge
pfnmap support.
- "resource: Fix region_intersects() vs add_memory_driver_managed()"
from Huang Ying. Fix a bug in region_intersects() for systems with
CXL memory.
- "mm: hwpoison: two more poison recovery" from Kefeng Wang. Teaches
a couple more code paths to correctly recover from the encountering
of poisoned memry.
- "mm: enable large folios swap-in support" from Barry Song. Support
the swapin of mTHP memory into appropriately-sized folios, rather
than into single-page folios"
* tag 'mm-stable-2024-09-20-02-31' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (416 commits)
zram: free secondary algorithms names
uprobes: turn xol_area->pages[2] into xol_area->page
uprobes: introduce the global struct vm_special_mapping xol_mapping
Revert "uprobes: use vm_special_mapping close() functionality"
mm: support large folios swap-in for sync io devices
mm: add nr argument in mem_cgroup_swapin_uncharge_swap() helper to support large folios
mm: fix swap_read_folio_zeromap() for large folios with partial zeromap
mm/debug_vm_pgtable: Use pxdp_get() for accessing page table entries
set_memory: add __must_check to generic stubs
mm/vma: return the exact errno in vms_gather_munmap_vmas()
memcg: cleanup with !CONFIG_MEMCG_V1
mm/show_mem.c: report alloc tags in human readable units
mm: support poison recovery from copy_present_page()
mm: support poison recovery from do_cow_fault()
resource, kunit: add test case for region_intersects()
resource: make alloc_free_mem_region() works for iomem_resource
mm: z3fold: deprecate CONFIG_Z3FOLD
vfio/pci: implement huge_fault support
mm/arm64: support large pfn mappings
mm/x86: support large pfn mappings
...
|
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Amit Vadhavana
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4538480b27 |
Documentation: Fix spelling mistakes
Correct spelling mistakes in the documentation to improve readability. Signed-off-by: Amit Vadhavana <av2082000@gmail.com> Reviewed-by: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20240817072724.6861-1-av2082000@gmail.com |
|
Mike Rapoport (Microsoft)
|
101d647080 |
docs: move numa=fake description to kernel-parameters.txt
NUMA emulation can be now enabled on arm64 and riscv in addition to x86. Move description of numa=fake parameters from x86 documentation of admin-guide/kernel-parameters.txt Link: https://lkml.kernel.org/r/20240807064110.1003856-27-rppt@kernel.org Suggested-by: Zi Yan <ziy@nvidia.com> Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Tested-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> [arm64 + CXL via QEMU] Acked-by: Dan Williams <dan.j.williams@intel.com> Acked-by: David Hildenbrand <david@redhat.com> Cc: Alexander Gordeev <agordeev@linux.ibm.com> Cc: Andreas Larsson <andreas@gaisler.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Borislav Petkov <bp@alien8.de> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Davidlohr Bueso <dave@stgolabs.net> Cc: David S. Miller <davem@davemloft.net> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiaxun Yang <jiaxun.yang@flygoat.com> Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Rafael J. Wysocki <rafael@kernel.org> Cc: Rob Herring (Arm) <robh@kernel.org> Cc: Samuel Holland <samuel.holland@sifive.com> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
|
Ravi Bangoria
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408eb7417a |
x86/bus_lock: Add support for AMD
Add Bus Lock Detect (called Bus Lock Trap in AMD docs) support for AMD
platforms. Bus Lock Detect is enumerated with CPUID Fn0000_0007_ECX_x0
bit [24 / BUSLOCKTRAP]. It can be enabled through MSR_IA32_DEBUGCTLMSR.
When enabled, hardware clears DR6[11] and raises a #DB exception on
occurrence of Bus Lock if CPL > 0. More detail about the feature can be
found in AMD APM[1].
[1]: AMD64 Architecture Programmer's Manual Pub. 40332, Rev. 4.07 - June
2023, Vol 2, 13.1.3.6 Bus Lock Trap
https://bugzilla.kernel.org/attachment.cgi?id=304653
Signed-off-by: Ravi Bangoria <ravi.bangoria@amd.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Tom Lendacky <thomas.lendacky@amd.com>
Link: https://lore.kernel.org/all/20240808062937.1149-3-ravi.bangoria@amd.com
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|
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Linus Torvalds
|
cf05e93af4 |
Nothing hugely exciting happening in the documentation tree this time
around, mostly more of the usual:
- More Spanish, Italian, and Chinese translations
- A new script, scripts/checktransupdate.py, can be used to see which
commits have touched an (English) document since a given translation was
last updated.
- A couple of "best practices" suggestions (on Link: tags and off-list
discussions) that were not entirely at consensus level, but I concluded
they were close enough to accept.
- Some nice cleanups removing documentation for kernel parameters that have
not been recognized for ... a long time.
...along with the usual updates, typo fixes, and such.
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Merge tag 'docs-6.11' of git://git.lwn.net/linux
Pull documentation updates from Jonathan Corbet:
"Nothing hugely exciting happening in the documentation tree this time
around, mostly more of the usual:
- More Spanish, Italian, and Chinese translations
- A new script, scripts/checktransupdate.py, can be used to see which
commits have touched an (English) document since a given
translation was last updated.
- A couple of "best practices" suggestions (on Link: tags and
off-list discussions) that were not entirely at consensus level,
but I concluded they were close enough to accept.
- Some nice cleanups removing documentation for kernel parameters
that have not been recognized for ... a long time.
...along with the usual updates, typo fixes, and such"
* tag 'docs-6.11' of git://git.lwn.net/linux: (57 commits)
Documentation: Document user_events ioctl code
docs/pinctrl: fix typo in mapping example
docs: maintainer: discourage taking conversations off-list
docs: driver-model: platform: update the definition of platform_driver
docs/sp_SP: Add translation for scheduler/sched-design-CFS.rst
writing_musb_glue_layer.rst: Fix broken URL
zh_CN/admin-guide: one typo fix
docs/zh_CN/virt: Update the translation of guest-halt-polling.rst
Documentation: add reference from dynamic debug to loglevel kernel params
Documentation: best practices for using Link trailers
Documentation: fix links to mailing list services
Documentation: exception-tables.rst: Fix the wrong steps referenced
docs/zh_CN: add process/researcher-guidelines Chinese translation
Documentation/tools/rv: fix document header
docs/sp_SP: Add translation of process/maintainer-kvm-x86.rst
docs/admin-guide/mm: correct typo 'quired' to 'queried'
Add libps2 to the input section of driver-api
Docs/mm/index: move allocation profiling document to unsorted documents chapter
Docs/mm/index: rename 'Legacy Documentation' to 'Unsorted Documentation'
Docs/mm/index: Remove 'Memory Management Guide' chapter marker
...
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|
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Linus Torvalds
|
408323581b |
- Add support for running the kernel in a SEV-SNP guest, over a Secure
VM Service Module (SVSM).
When running over a SVSM, different services can run at different
protection levels, apart from the guest OS but still within the
secure SNP environment. They can provide services to the guest, like
a vTPM, for example.
This series adds the required facilities to interface with such a SVSM
module.
- The usual fixlets, refactoring and cleanups
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Merge tag 'x86_sev_for_v6.11_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 SEV updates from Borislav Petkov:
- Add support for running the kernel in a SEV-SNP guest, over a Secure
VM Service Module (SVSM).
When running over a SVSM, different services can run at different
protection levels, apart from the guest OS but still within the
secure SNP environment. They can provide services to the guest, like
a vTPM, for example.
This series adds the required facilities to interface with such a
SVSM module.
- The usual fixlets, refactoring and cleanups
[ And as always: "SEV" is AMD's "Secure Encrypted Virtualization".
I can't be the only one who gets all the newer x86 TLA's confused,
can I?
- Linus ]
* tag 'x86_sev_for_v6.11_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
Documentation/ABI/configfs-tsm: Fix an unexpected indentation silly
x86/sev: Do RMP memory coverage check after max_pfn has been set
x86/sev: Move SEV compilation units
virt: sev-guest: Mark driver struct with __refdata to prevent section mismatch
x86/sev: Allow non-VMPL0 execution when an SVSM is present
x86/sev: Extend the config-fs attestation support for an SVSM
x86/sev: Take advantage of configfs visibility support in TSM
fs/configfs: Add a callback to determine attribute visibility
sev-guest: configfs-tsm: Allow the privlevel_floor attribute to be updated
virt: sev-guest: Choose the VMPCK key based on executing VMPL
x86/sev: Provide guest VMPL level to userspace
x86/sev: Provide SVSM discovery support
x86/sev: Use the SVSM to create a vCPU when not in VMPL0
x86/sev: Perform PVALIDATE using the SVSM when not at VMPL0
x86/sev: Use kernel provided SVSM Calling Areas
x86/sev: Check for the presence of an SVSM in the SNP secrets page
x86/irqflags: Provide native versions of the local_irq_save()/restore()
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|
Li Zhijian
|
b393590992 |
Documentation: exception-tables.rst: Fix the wrong steps referenced
When it was in text format, it correctly hardcoded steps 8a to 8c. However, after it was converted to RST, the sequence numbers were auto-generated during rendering and became incorrect after some steps were inserted. Change it to refer to steps a to c in a relative way. Signed-off-by: Li Zhijian <lizhijian@fujitsu.com> [jc: Indented the line to make the relative reference more clear] Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20240614010028.48262-1-lizhijian@fujitsu.com |
|
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Tony Luck
|
ea34999f41 |
x86/resctrl: Update documentation with Sub-NUMA cluster changes
With Sub-NUMA Cluster (SNC) mode enabled, the scope of monitoring resources is per-NODE instead of per-L3 cache. Backwards compatibility is maintained by providing files in the mon_L3_XX directories that sum event counts for all SNC nodes sharing an L3 cache. New files provide per-SNC node event counts. Users should be aware that SNC mode also affects the amount of L3 cache available for allocation within each SNC node. Signed-off-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Reviewed-by: Reinette Chatre <reinette.chatre@intel.com> Tested-by: Babu Moger <babu.moger@amd.com> Link: https://lore.kernel.org/r/20240628215619.76401-20-tony.luck@intel.com |
|
|
Tony Luck
|
f77afc2796 |
Documentation/x86: Switch to new Intel CPU model defines
New CPU #defines encode vendor and family as well as model so "_FAM6" is no longer used in the #define names. Signed-off-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20240611204814.353821-1-tony.luck@intel.com |
|
|
Tom Lendacky
|
878e70dbd2 |
x86/sev: Check for the presence of an SVSM in the SNP secrets page
During early boot phases, check for the presence of an SVSM when running as an SEV-SNP guest. An SVSM is present if not running at VMPL0 and the 64-bit value at offset 0x148 into the secrets page is non-zero. If an SVSM is present, save the SVSM Calling Area address (CAA), located at offset 0x150 into the secrets page, and set the VMPL level of the guest, which should be non-zero, to indicate the presence of an SVSM. [ bp: Touchups. ] Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Link: https://lore.kernel.org/r/9d3fe161be93d4ea60f43c2a3f2c311fe708b63b.1717600736.git.thomas.lendacky@amd.com |
|
|
Linus Torvalds
|
5186ba3323 |
- Add a tracepoint to read out LLC occupancy of resource monitor IDs with the
goal of freeing them sooner rather than later - Other code improvements and cleanups -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmZCW64ACgkQEsHwGGHe VUq7Dw//ZM+4OX3l0P6NTv4WJ9UDn3IltRm+D61J6hYw19iETlGGAel5T6DI1LPT GYAoOazd9ouNjwU0YhOn6Se3SVWKxLLOGH+/RIJtqwiCwTy2nGfSPHw3pnTxwtK4 pRttm6fPQWIUuQyDrzmbJGP+va4YDtVtDyBkxNlk8pQTvF7X0QCcu6GjNW9r6+Md 92J2AwzeoDAeIc16vKHru4S3wBCqdP7xZ9GqBb8wrNxBy8taSN4wE9cuwDjev5Yw ANGeREv3odWvYQ7p0fQVY2j25ddjGNE4qEEJ1iAIJDh9bIHURAF3s1aSPqcMyHyF eB8NNf7ZjQhycmBX9ci6CHYOKc3i25nWiMoaC1iWZKQEviTt3OCEeKr20mjAfKOz wlUs55iGrHkbS10kB91Z6lOMDNiIu+x4kuiF5y1W73SDfkY+pYv8zLQL9rhNpYnd BEcOF+YaJuhi4Y7GUDb0fWdIUZcfGItSJyNbR8jaznJKcP2pjznSUKqM/AphZyuU bVsVsYkYQiE2vl4xYdmyHnxsfnpuMTVNuPpIonyp1mIa77iDVeiwYabkau+pz8L9 Rv1jhUmYVfawxKiRc6tOQAsxOtAiqrm2GBpZlisw8KtfzZaPC9h7U7bXC4up1TtH nZVt+qV/8M9nc3Trocb+d8djbrv+Uqh4EHPTBbFEfW6qsMFsXhk= =8EKr -----END PGP SIGNATURE----- Merge tag 'x86_cache_for_v6.10_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 resource control updates from Borislav Petkov: - Add a tracepoint to read out LLC occupancy of resource monitor IDs with the goal of freeing them sooner rather than later - Other code improvements and cleanups * tag 'x86_cache_for_v6.10_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/resctrl: Add tracepoint for llc_occupancy tracking x86/resctrl: Rename pseudo_lock_event.h to trace.h x86/resctrl: Simplify call convention for MSR update functions x86/resctrl: Pass domain to target CPU |
|
|
Linus Torvalds
|
8815da98e0 |
Another not-too-busy cycle for documentation, including:
- Some build-system changes to detect the variable fonts installed by some
distributions that can break the PDF build.
- Various updates and additions to the Spanish, Chinese, Italian, and
Japanese translations.
- Update the stable-kernel rules to match modern practice
...and the usual array of corrections, updates, and typo fixes.
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Merge tag 'docs-6.10' of git://git.lwn.net/linux
Pull documentation updates from Jonathan Corbet:
"Another not-too-busy cycle for documentation, including:
- Some build-system changes to detect the variable fonts installed by
some distributions that can break the PDF build.
- Various updates and additions to the Spanish, Chinese, Italian, and
Japanese translations.
- Update the stable-kernel rules to match modern practice
... and the usual array of corrections, updates, and typo fixes"
* tag 'docs-6.10' of git://git.lwn.net/linux: (42 commits)
cgroup: Add documentation for missing zswap memory.stat
kernel-doc: Added "*" in $type_constants2 to fix 'make htmldocs' warning.
docs:core-api: fixed typos and grammar in printk-index page
Documentation: tracing: Fix spelling mistakes
docs/zh_CN/rust: Update the translation of quick-start to 6.9-rc4
docs/zh_CN/rust: Update the translation of general-information to 6.9-rc4
docs/zh_CN/rust: Update the translation of coding-guidelines to 6.9-rc4
docs/zh_CN/rust: Update the translation of arch-support to 6.9-rc4
docs: stable-kernel-rules: fix typo sent->send
docs/zh_CN: remove two inconsistent spaces
docs: scripts/check-variable-fonts.sh: Improve commands for detection
docs: stable-kernel-rules: create special tag to flag 'no backporting'
docs: stable-kernel-rules: explain use of stable@kernel.org (w/o @vger.)
docs: stable-kernel-rules: remove code-labels tags and a indention level
docs: stable-kernel-rules: call mainline by its name and change example
docs: stable-kernel-rules: reduce redundancy
docs, kprobes: Add riscv as supported architecture
Docs: typos/spelling
docs: kernel_include.py: Cope with docutils 0.21
docs: ja_JP/howto: Catch up update in v6.8
...
|
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Remington Brasga
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da51bbcdba |
Docs: typos/spelling
Fix spelling and grammar in Docs descriptions Signed-off-by: Remington Brasga <rbrasga@uci.edu> Reviewed-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20240429225527.2329-1-rbrasga@uci.edu |
|
Haifeng Xu
|
931be446c6 |
x86/resctrl: Add tracepoint for llc_occupancy tracking
In our production environment, after removing monitor groups, those unused RMIDs get stuck in the limbo list forever because their llc_occupancy is always larger than the threshold. But the unused RMIDs can be successfully freed by turning up the threshold. In order to know how much the threshold should be, perf can be used to acquire the llc_occupancy of RMIDs in each rdt domain. Instead of using perf tool to track llc_occupancy and filter the log manually, it is more convenient for users to use tracepoint to do this work. So add a new tracepoint that shows the llc_occupancy of busy RMIDs when scanning the limbo list. Suggested-by: Reinette Chatre <reinette.chatre@intel.com> Suggested-by: James Morse <james.morse@arm.com> Signed-off-by: Haifeng Xu <haifeng.xu@shopee.com> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Reviewed-by: James Morse <james.morse@arm.com> Reviewed-by: Reinette Chatre <reinette.chatre@intel.com> Link: https://lore.kernel.org/r/20240408092303.26413-3-haifeng.xu@shopee.com |
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Ingo Molnar
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91491e5fb0 |
Documentation/x86: Fix title underline length
Fix: Documentation/arch/x86/resctrl.rst:577: WARNING: Title underline too short. Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Ingo Molnar <mingo@kernel.org> Cc: Tony Luck <tony.luck@intel.com> Link: https://lore.kernel.org/r/20240325121750.265d655c@canb.auug.org.au |
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Tony Luck
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a8ed59a3a8 |
Documentation/x86: Document that resctrl bandwidth control units are MiB
The memory bandwidth software controller uses 2^20 units rather than 10^6. See mbm_bw_count() which computes bandwidth using the "SZ_1M" Linux define for 0x00100000. Update the documentation to use MiB when describing this feature. It's too late to fix the mount option "mba_MBps" as that is now an established user interface. Signed-off-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Ingo Molnar <mingo@kernel.org> Link: https://lore.kernel.org/r/20240322182016.196544-1-tony.luck@intel.com |
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Linus Torvalds
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66fd6d0bd7 |
platform-drivers-x86 for v6.9-1
Highlights: - acer-wmi: New HW support - amd/pmf: Support for new revision of heartbeat notify - asus-wmi: Correctly handle HW without LEDs - fujitsu-laptop: Battery charge control support - hp-wmi: Support for new thermal profiles - ideapad-laptop: Support for refresh rate key - intel/pmc: Put AI accelerator (GNA) into D3 if it has no driver to allow entry into low-power modes, and temporarily removed Lunar Lake SSRAM support due to breaking FW changes causing probe fail (further breaking FW changes are still pending) - pmc/punit_atom: Report devices that prevent reacing low power levels - surface: Fan speed function support - thinkpad_acpi: Support for more sperial keys and complete the list of models with non-standard fan registers - touchscreen_dmi: New HW support - wmi: Continued modernization efforts - Removal of obsoleted ledtrig-audio call and the related dependency - Debug & metrics interface improvements - Miscellaneous cleanups / fixes / improvements The following is an automated shortlog grouped by driver: acer-wmi: - Add predator_v4 module parameter - Add support for Acer PH16-71 amd/hsmp: - Add support for ACPI based probing - Cache pci_dev in struct hsmp_socket - Change devm_kzalloc() to devm_kcalloc() - Check num_sockets against MAX_AMD_SOCKETS - Create static func to handle platdev - Define a struct to hold mailbox regs - Move dev from platdev to hsmp_socket - Move hsmp_test to probe - Non-ACPI support for AMD F1A_M00~0Fh - Remove extra parenthesis and add a space - Restructure sysfs group creation amd/pmf: - Add missing __iomem attribute to policy_base - Add support to get APTS index numbers for static slider - Add support to get sbios requests in PMF driver - Add support to get sps default APTS index values - Add support to notify sbios heart beat event - Differentiate PMF ACPI versions - Disable debugfs support for querying power thermals - Do not use readl() for policy buffer access - Fix possible out-of-bound memory accesses - Fix return value of amd_pmf_start_policy_engine() - Update sps power thermals according to the platform-profiles - Use struct for cookie header asus-wmi: - Consider device is absent when the read is ~0 - Revert: Support WMI event queue clk: x86: - Move clk-pmc-atom register defines to include/linux/platform_data/x86/pmc_atom.h dell-privacy: - Remove usage of wmi_has_guid() Documentation/x86/amd/hsmp: - Updating urls drivers/mellanox: - Convert snprintf to sysfs_emit fujitsu-laptop: - Add battery charge control support hp-wmi: - Add thermal profile support for 8BAD boards - Tidy up module source code ideapad-laptop: - map Fn + R key to KEY_REFRESH_RATE_TOGGLE - support Fn+R dual-function key Input: - allocate keycode for Display refresh rate toggle intel/ifs: - Add an entry rendezvous for SAF - Add current batch number to trace output - Remove unnecessary initialization of 'ret' - Replace the exit rendezvous with an entry rendezvous for ARRAY_BIST - Trace on all HT threads when executing a test intel/pmc/arl: - Put GNA device in D3 intel/pmc: - Improve PKGC residency counters debug intel/pmc/lnl: - Remove SSRAM support intel_scu_ipcutil: - Make scu static intel_scu_pcidrv: - Remove unused intel-mid.h intel_scu_wdt: - Remove unused intel-mid.h intel/tpmi: - Change vsec offset to u64 intel/vsec: - Remove nuisance message ISST: - Allow reading core-power state on HWP disabled systems mlxbf-pmc: - Cleanup signed/unsigned mix-up - fix signedness bugs - Ignore unsupported performance blocks mlxbf-pmc: mlxbf_pmc_event_list(): - make size ptr optional mlxbf-pmc: - Replace uintN_t with kernel-style types mlxreg-hotplug: - Remove redundant NULL-check pmc_atom: - Annotate d3_sts register bit defines - Check state of PMC clocks on s2idle - Check state of PMC managed devices on s2idle silicom-platform: - clean up a check surface: aggregator_registry: - add entry for fan speed thinkpad_acpi: - Add more ThinkPads with non-standard reg address for fan - Fix to correct wrong temp reporting on some ThinkPads - remove redundant assignment to variable i - Simplify thermal mode checking - Support for mode FN key touchscreen_dmi: - Add an extra entry for a variant of the Chuwi Vi8 tablet wmi: - Always evaluate _WED when receiving an event - Check if event data is not NULL - Check if WMxx control method exists - Do not instantiate older WMI drivers multiple times - Ignore duplicated GUIDs in legacy matches - Make input buffer mandatory when evaluating methods - Prevent incompatible event driver from probing - Remove obsolete duplicate GUID allowlist - Remove unnecessary out-of-memory message - Replace pr_err() with dev_err() - Stop using ACPI device class - Update documentation regarding _WED - Use ACPI device name in netlink event - Use FW_BUG when warning about missing control methods x86/atom: - Check state of Punit managed devices on s2idle x86: ibm_rtl: - make rtl_subsys const x86: wmi: - make wmi_bus_type const platform/x86: - make fw_attr_class constant - remove obsolete calls to ledtrig_audio_get Merges: - Merge tag 'platform-drivers-x86-v6.8-2' into pdx/for-next - Merge tag 'platform-drivers-x86-v6.8-4' into pdx86/for-next -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQSCSUwRdwTNL2MhaBlZrE9hU+XOMQUCZfLZKgAKCRBZrE9hU+XO MWqnAQCZW0KiSzXbJkTN4GWlMOqnlaJsiflnPeVNxH59bDUTeQEA/OdSzyiDUqKr zJcGnOyILuQ3wCvQ5SuqRCwjFHXOQg0= =8y6r -----END PGP SIGNATURE----- Merge tag 'platform-drivers-x86-v6.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86 Pull x86 platform driver updates from Ilpo Järvinen: - New acer-wmi HW support - Support for new revision of amd/pmf heartbeat notify - Correctly handle asus-wmi HW without LEDs - fujitsu-laptop battery charge control support - Support for new hp-wmi thermal profiles - Support ideapad-laptop refresh rate key - Put intel/pmc AI accelerator (GNA) into D3 if it has no driver to allow entry into low-power modes, and temporarily removed Lunar Lake SSRAM support due to breaking FW changes causing probe fail (further breaking FW changes are still pending) - Report pmc/punit_atom devices that prevent reacing low power levels - Surface Fan speed function support - Support for more sperial keys and complete the list of models with non-standard fan registers in thinkpad_acpi - New DMI touchscreen HW support - Continued modernization efforts of wmi - Removal of obsoleted ledtrig-audio call and the related dependency - Debug & metrics interface improvements - Miscellaneous cleanups / fixes / improvements * tag 'platform-drivers-x86-v6.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (87 commits) platform/x86/intel/pmc: Improve PKGC residency counters debug platform/x86: asus-wmi: Consider device is absent when the read is ~0 Documentation/x86/amd/hsmp: Updating urls platform/mellanox: mlxreg-hotplug: Remove redundant NULL-check platform/x86/amd/pmf: Update sps power thermals according to the platform-profiles platform/x86/amd/pmf: Add support to get sps default APTS index values platform/x86/amd/pmf: Add support to get APTS index numbers for static slider platform/x86/amd/pmf: Add support to notify sbios heart beat event platform/x86/amd/pmf: Add support to get sbios requests in PMF driver platform/x86/amd/pmf: Disable debugfs support for querying power thermals platform/x86/amd/pmf: Differentiate PMF ACPI versions x86/platform/atom: Check state of Punit managed devices on s2idle platform/x86: pmc_atom: Check state of PMC clocks on s2idle platform/x86: pmc_atom: Check state of PMC managed devices on s2idle platform/x86: pmc_atom: Annotate d3_sts register bit defines clk: x86: Move clk-pmc-atom register defines to include/linux/platform_data/x86/pmc_atom.h platform/x86: make fw_attr_class constant platform/x86/intel/tpmi: Change vsec offset to u64 platform/x86: intel_scu_pcidrv: Remove unused intel-mid.h platform/x86: intel_scu_wdt: Remove unused intel-mid.h ... |
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Erwan Velu
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e9df5436fd
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Documentation/x86/amd/hsmp: Updating urls
When reading this page, some links were broken. This commit updates links to get documentation actually pointing the intended content. Signed-off-by: Erwan Velu <e.velu@criteo.com> Link: https://lore.kernel.org/r/20240307133601.103521-1-e.velu@criteo.com Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> |
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Ingo Molnar
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2e2bc42c83 |
Merge branch 'linus' into x86/boot, to resolve conflict
There's a new conflict with Linus's upstream tree, because in the following merge conflict resolution in <asm/coco.h>: |
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Linus Torvalds
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685d982112 |
Core x86 changes for v6.9:
- The biggest change is the rework of the percpu code,
to support the 'Named Address Spaces' GCC feature,
by Uros Bizjak:
- This allows C code to access GS and FS segment relative
memory via variables declared with such attributes,
which allows the compiler to better optimize those accesses
than the previous inline assembly code.
- The series also includes a number of micro-optimizations
for various percpu access methods, plus a number of
cleanups of %gs accesses in assembly code.
- These changes have been exposed to linux-next testing for
the last ~5 months, with no known regressions in this area.
- Fix/clean up __switch_to()'s broken but accidentally
working handling of FPU switching - which also generates
better code.
- Propagate more RIP-relative addressing in assembly code,
to generate slightly better code.
- Rework the CPU mitigations Kconfig space to be less idiosyncratic,
to make it easier for distros to follow & maintain these options.
- Rework the x86 idle code to cure RCU violations and
to clean up the logic.
- Clean up the vDSO Makefile logic.
- Misc cleanups and fixes.
[ Please note that there's a higher number of merge commits in
this branch (three) than is usual in x86 topic trees. This happened
due to the long testing lifecycle of the percpu changes that
involved 3 merge windows, which generated a longer history
and various interactions with other core x86 changes that we
felt better about to carry in a single branch. ]
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'x86-core-2024-03-11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull core x86 updates from Ingo Molnar:
- The biggest change is the rework of the percpu code, to support the
'Named Address Spaces' GCC feature, by Uros Bizjak:
- This allows C code to access GS and FS segment relative memory
via variables declared with such attributes, which allows the
compiler to better optimize those accesses than the previous
inline assembly code.
- The series also includes a number of micro-optimizations for
various percpu access methods, plus a number of cleanups of %gs
accesses in assembly code.
- These changes have been exposed to linux-next testing for the
last ~5 months, with no known regressions in this area.
- Fix/clean up __switch_to()'s broken but accidentally working handling
of FPU switching - which also generates better code
- Propagate more RIP-relative addressing in assembly code, to generate
slightly better code
- Rework the CPU mitigations Kconfig space to be less idiosyncratic, to
make it easier for distros to follow & maintain these options
- Rework the x86 idle code to cure RCU violations and to clean up the
logic
- Clean up the vDSO Makefile logic
- Misc cleanups and fixes
* tag 'x86-core-2024-03-11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (52 commits)
x86/idle: Select idle routine only once
x86/idle: Let prefer_mwait_c1_over_halt() return bool
x86/idle: Cleanup idle_setup()
x86/idle: Clean up idle selection
x86/idle: Sanitize X86_BUG_AMD_E400 handling
sched/idle: Conditionally handle tick broadcast in default_idle_call()
x86: Increase brk randomness entropy for 64-bit systems
x86/vdso: Move vDSO to mmap region
x86/vdso/kbuild: Group non-standard build attributes and primary object file rules together
x86/vdso: Fix rethunk patching for vdso-image-{32,64}.o
x86/retpoline: Ensure default return thunk isn't used at runtime
x86/vdso: Use CONFIG_COMPAT_32 to specify vdso32
x86/vdso: Use $(addprefix ) instead of $(foreach )
x86/vdso: Simplify obj-y addition
x86/vdso: Consolidate targets and clean-files
x86/bugs: Rename CONFIG_RETHUNK => CONFIG_MITIGATION_RETHUNK
x86/bugs: Rename CONFIG_CPU_SRSO => CONFIG_MITIGATION_SRSO
x86/bugs: Rename CONFIG_CPU_IBRS_ENTRY => CONFIG_MITIGATION_IBRS_ENTRY
x86/bugs: Rename CONFIG_CPU_UNRET_ENTRY => CONFIG_MITIGATION_UNRET_ENTRY
x86/bugs: Rename CONFIG_SLS => CONFIG_MITIGATION_SLS
...
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Linus Torvalds
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38b334fc76 |
- Add the x86 part of the SEV-SNP host support. This will allow the
kernel to be used as a KVM hypervisor capable of running SNP (Secure Nested Paging) guests. Roughly speaking, SEV-SNP is the ultimate goal of the AMD confidential computing side, providing the most comprehensive confidential computing environment up to date. This is the x86 part and there is a KVM part which did not get ready in time for the merge window so latter will be forthcoming in the next cycle. - Rework the early code's position-dependent SEV variable references in order to allow building the kernel with clang and -fPIE/-fPIC and -mcmodel=kernel - The usual set of fixes, cleanups and improvements all over the place -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmXvH0wACgkQEsHwGGHe VUrzmA//VS/n6dhHRnm/nAGngr4PeegkgV1OhyKYFfiZ272rT6P9QvblQrgcY0dc Ij1DOhEKlke51pTHvMOQ33B3P4Fuc0mx3dpCLY0up5V26kzQiKCjRKEkC4U1bcw8 W4GqMejaR89bE14bYibmwpSib9T/uVsV65eM3xf1iF5UvsnoUaTziymDoy+nb43a B1pdd5vcl4mBNqXeEvt0qjg+xkMLpWUI9tJDB8mbMl/cnIFGgMZzBaY8oktHSROK QpuUnKegOgp1RXpfLbNjmZ2Q4Rkk4MNazzDzWq3EIxaRjXL3Qp507ePK7yeA2qa0 J3jCBQc9E2j7lfrIkUgNIzOWhMAXM2YH5bvH6UrIcMi1qsWJYDmkp2MF1nUedjdf Wj16/pJbeEw1aKKIywJGwsmViSQju158vY3SzXG83U/A/Iz7zZRHFmC/ALoxZptY Bi7VhfcOSpz98PE3axnG8CvvxRDWMfzBr2FY1VmQbg6VBNo1Xl1aP/IH1I8iQNKg /laBYl/qP+1286TygF1lthYROb1lfEIJprgi2xfO6jVYUqPb7/zq2sm78qZRfm7l 25PN/oHnuidfVfI/H3hzcGubjOG9Zwra8WWYBB2EEmelf21rT0OLqq+eS4T6pxFb GNVfc0AzG77UmqbrpkAMuPqL7LrGaSee4NdU3hkEdSphlx1/YTo= =c1ps -----END PGP SIGNATURE----- Merge tag 'x86_sev_for_v6.9_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 SEV updates from Borislav Petkov: - Add the x86 part of the SEV-SNP host support. This will allow the kernel to be used as a KVM hypervisor capable of running SNP (Secure Nested Paging) guests. Roughly speaking, SEV-SNP is the ultimate goal of the AMD confidential computing side, providing the most comprehensive confidential computing environment up to date. This is the x86 part and there is a KVM part which did not get ready in time for the merge window so latter will be forthcoming in the next cycle. - Rework the early code's position-dependent SEV variable references in order to allow building the kernel with clang and -fPIE/-fPIC and -mcmodel=kernel - The usual set of fixes, cleanups and improvements all over the place * tag 'x86_sev_for_v6.9_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (36 commits) x86/sev: Disable KMSAN for memory encryption TUs x86/sev: Dump SEV_STATUS crypto: ccp - Have it depend on AMD_IOMMU iommu/amd: Fix failure return from snp_lookup_rmpentry() x86/sev: Fix position dependent variable references in startup code crypto: ccp: Make snp_range_list static x86/Kconfig: Remove CONFIG_AMD_MEM_ENCRYPT_ACTIVE_BY_DEFAULT Documentation: virt: Fix up pre-formatted text block for SEV ioctls crypto: ccp: Add the SNP_SET_CONFIG command crypto: ccp: Add the SNP_COMMIT command crypto: ccp: Add the SNP_PLATFORM_STATUS command x86/cpufeatures: Enable/unmask SEV-SNP CPU feature KVM: SEV: Make AVIC backing, VMSA and VMCB memory allocation SNP safe crypto: ccp: Add panic notifier for SEV/SNP firmware shutdown on kdump iommu/amd: Clean up RMP entries for IOMMU pages during SNP shutdown crypto: ccp: Handle legacy SEV commands when SNP is enabled crypto: ccp: Handle non-volatile INIT_EX data when SNP is enabled crypto: ccp: Handle the legacy TMR allocation when SNP is enabled x86/sev: Introduce an SNP leaked pages list crypto: ccp: Provide an API to issue SEV and SNP commands ... |
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Linus Torvalds
|
720c857907 |
Support for x86 Fast Return and Event Delivery (FRED):
FRED is a replacement for IDT event delivery on x86 and addresses most of
the technical nightmares which IDT exposes:
1) Exception cause registers like CR2 need to be manually preserved in
nested exception scenarios.
2) Hardware interrupt stack switching is suboptimal for nested exceptions
as the interrupt stack mechanism rewinds the stack on each entry which
requires a massive effort in the low level entry of #NMI code to handle
this.
3) No hardware distinction between entry from kernel or from user which
makes establishing kernel context more complex than it needs to be
especially for unconditionally nestable exceptions like NMI.
4) NMI nesting caused by IRET unconditionally reenabling NMIs, which is a
problem when the perf NMI takes a fault when collecting a stack trace.
5) Partial restore of ESP when returning to a 16-bit segment
6) Limitation of the vector space which can cause vector exhaustion on
large systems.
7) Inability to differentiate NMI sources
FRED addresses these shortcomings by:
1) An extended exception stack frame which the CPU uses to save exception
cause registers. This ensures that the meta information for each
exception is preserved on stack and avoids the extra complexity of
preserving it in software.
2) Hardware interrupt stack switching is non-rewinding if a nested
exception uses the currently interrupt stack.
3) The entry points for kernel and user context are separate and GS BASE
handling which is required to establish kernel context for per CPU
variable access is done in hardware.
4) NMIs are now nesting protected. They are only reenabled on the return
from NMI.
5) FRED guarantees full restore of ESP
6) FRED does not put a limitation on the vector space by design because it
uses a central entry points for kernel and user space and the CPUstores
the entry type (exception, trap, interrupt, syscall) on the entry stack
along with the vector number. The entry code has to demultiplex this
information, but this removes the vector space restriction.
The first hardware implementations will still have the current
restricted vector space because lifting this limitation requires
further changes to the local APIC.
7) FRED stores the vector number and meta information on stack which
allows having more than one NMI vector in future hardware when the
required local APIC changes are in place.
The series implements the initial FRED support by:
- Reworking the existing entry and IDT handling infrastructure to
accomodate for the alternative entry mechanism.
- Expanding the stack frame to accomodate for the extra 16 bytes FRED
requires to store context and meta information
- Providing FRED specific C entry points for events which have information
pushed to the extended stack frame, e.g. #PF and #DB.
- Providing FRED specific C entry points for #NMI and #MCE
- Implementing the FRED specific ASM entry points and the C code to
demultiplex the events
- Providing detection and initialization mechanisms and the necessary
tweaks in context switching, GS BASE handling etc.
The FRED integration aims for maximum code reuse vs. the existing IDT
implementation to the extent possible and the deviation in hot paths like
context switching are handled with alternatives to minimalize the
impact. The low level entry and exit paths are seperate due to the extended
stack frame and the hardware based GS BASE swichting and therefore have no
impact on IDT based systems.
It has been extensively tested on existing systems and on the FRED
simulation and as of now there are know outstanding problems.
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Merge tag 'x86-fred-2024-03-10' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 FRED support from Thomas Gleixner:
"Support for x86 Fast Return and Event Delivery (FRED).
FRED is a replacement for IDT event delivery on x86 and addresses most
of the technical nightmares which IDT exposes:
1) Exception cause registers like CR2 need to be manually preserved
in nested exception scenarios.
2) Hardware interrupt stack switching is suboptimal for nested
exceptions as the interrupt stack mechanism rewinds the stack on
each entry which requires a massive effort in the low level entry
of #NMI code to handle this.
3) No hardware distinction between entry from kernel or from user
which makes establishing kernel context more complex than it needs
to be especially for unconditionally nestable exceptions like NMI.
4) NMI nesting caused by IRET unconditionally reenabling NMIs, which
is a problem when the perf NMI takes a fault when collecting a
stack trace.
5) Partial restore of ESP when returning to a 16-bit segment
6) Limitation of the vector space which can cause vector exhaustion
on large systems.
7) Inability to differentiate NMI sources
FRED addresses these shortcomings by:
1) An extended exception stack frame which the CPU uses to save
exception cause registers. This ensures that the meta information
for each exception is preserved on stack and avoids the extra
complexity of preserving it in software.
2) Hardware interrupt stack switching is non-rewinding if a nested
exception uses the currently interrupt stack.
3) The entry points for kernel and user context are separate and GS
BASE handling which is required to establish kernel context for
per CPU variable access is done in hardware.
4) NMIs are now nesting protected. They are only reenabled on the
return from NMI.
5) FRED guarantees full restore of ESP
6) FRED does not put a limitation on the vector space by design
because it uses a central entry points for kernel and user space
and the CPUstores the entry type (exception, trap, interrupt,
syscall) on the entry stack along with the vector number. The
entry code has to demultiplex this information, but this removes
the vector space restriction.
The first hardware implementations will still have the current
restricted vector space because lifting this limitation requires
further changes to the local APIC.
7) FRED stores the vector number and meta information on stack which
allows having more than one NMI vector in future hardware when the
required local APIC changes are in place.
The series implements the initial FRED support by:
- Reworking the existing entry and IDT handling infrastructure to
accomodate for the alternative entry mechanism.
- Expanding the stack frame to accomodate for the extra 16 bytes FRED
requires to store context and meta information
- Providing FRED specific C entry points for events which have
information pushed to the extended stack frame, e.g. #PF and #DB.
- Providing FRED specific C entry points for #NMI and #MCE
- Implementing the FRED specific ASM entry points and the C code to
demultiplex the events
- Providing detection and initialization mechanisms and the necessary
tweaks in context switching, GS BASE handling etc.
The FRED integration aims for maximum code reuse vs the existing IDT
implementation to the extent possible and the deviation in hot paths
like context switching are handled with alternatives to minimalize the
impact. The low level entry and exit paths are seperate due to the
extended stack frame and the hardware based GS BASE swichting and
therefore have no impact on IDT based systems.
It has been extensively tested on existing systems and on the FRED
simulation and as of now there are no outstanding problems"
* tag 'x86-fred-2024-03-10' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (38 commits)
x86/fred: Fix init_task thread stack pointer initialization
MAINTAINERS: Add a maintainer entry for FRED
x86/fred: Fix a build warning with allmodconfig due to 'inline' failing to inline properly
x86/fred: Invoke FRED initialization code to enable FRED
x86/fred: Add FRED initialization functions
x86/syscall: Split IDT syscall setup code into idt_syscall_init()
KVM: VMX: Call fred_entry_from_kvm() for IRQ/NMI handling
x86/entry: Add fred_entry_from_kvm() for VMX to handle IRQ/NMI
x86/entry/calling: Allow PUSH_AND_CLEAR_REGS being used beyond actual entry code
x86/fred: Fixup fault on ERETU by jumping to fred_entrypoint_user
x86/fred: Let ret_from_fork_asm() jmp to asm_fred_exit_user when FRED is enabled
x86/traps: Add sysvec_install() to install a system interrupt handler
x86/fred: FRED entry/exit and dispatch code
x86/fred: Add a machine check entry stub for FRED
x86/fred: Add a NMI entry stub for FRED
x86/fred: Add a debug fault entry stub for FRED
x86/idtentry: Incorporate definitions/declarations of the FRED entries
x86/fred: Make exc_page_fault() work for FRED
x86/fred: Allow single-step trap and NMI when starting a new task
x86/fred: No ESPFIX needed when FRED is enabled
...
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Ingo Molnar
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9b9c280b9a |
Merge branch 'x86/urgent' into x86/apic, to resolve conflicts
Conflicts: arch/x86/kernel/cpu/common.c arch/x86/kernel/cpu/intel.c Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Ingo Molnar
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2e5fc4786b |
Merge branch 'x86/sev' into x86/boot, to resolve conflicts and to pick up dependent tree
We are going to queue up a number of patches that depend on fresh changes in x86/sev - merge in that branch to reduce the number of conflicts going forward. Also resolve a current conflict with x86/sev. Conflicts: arch/x86/include/asm/coco.h Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Ingo Molnar
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29cd85557d |
Linux 6.8-rc6
-----BEGIN PGP SIGNATURE----- iQFSBAABCAA8FiEEq68RxlopcLEwq+PEeb4+QwBBGIYFAmXb0T4eHHRvcnZhbGRz QGxpbnV4LWZvdW5kYXRpb24ub3JnAAoJEHm+PkMAQRiG5YQH/3eCV90sNGch0Y94 8rtTdqFrVx7QPNl0pz+Mo6OUIKUUHvTuwime16ckLxG+3x2Y3I0MjP1edd1NB99C Kje//JTpaZBPpTZ/jY4u8B1Shov2Drdx/J4NFnE/9rG6yXzKQBtvON/xAxXDCVHT mLhst2LR0FeCSMk9jAX6CoqUPEgwlylNyAetKxaDQgoHl4GTZC7FDO17WxyjpIxe 1rVHsrV9Eq8kD4uxrzpTYWgZrwTObPmlZjvefa1JfzSwRNABIBJj/C1nra1Zc1oi b7xVaXS1cMOxrtuuG00fmHsPnWivu0tuND7H3/yLd1mRCZAPSsVbVvrI/KNtoeV4 1euINlY= =7IFt -----END PGP SIGNATURE----- Merge tag 'v6.8-rc6' into x86/boot, to pick up fixes Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Chris Koch
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43b1d3e68e |
kexec: Allocate kernel above bzImage's pref_address
A relocatable kernel will relocate itself to pref_address if it is loaded below pref_address. This means a booted kernel may be relocating itself to an area with reserved memory on modern systems, potentially clobbering arbitrary data that may be important to the system. This is often the case, as the default value of PHYSICAL_START is 0x1000000 and kernels are typically loaded at 0x100000 or above by bootloaders like iPXE or kexec. GRUB behaves like the approach implemented here. Also fixes the documentation around pref_address and PHYSICAL_START to be accurate. [ dhansen: changelog tweak ] Co-developed-by: Cloud Hsu <cloudhsu@google.com> Signed-off-by: Cloud Hsu <cloudhsu@google.com> Signed-off-by: Chris Koch <chrisko@google.com> Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Reviewed-by: H. Peter Anvin (Intel) <hpa@zytor.com> Link: https://lore.kernel.org/all/20231215190521.3796022-1-chrisko%40google.com |
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Pawan Gupta
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6613d82e61 |
x86/bugs: Use ALTERNATIVE() instead of mds_user_clear static key
The VERW mitigation at exit-to-user is enabled via a static branch mds_user_clear. This static branch is never toggled after boot, and can be safely replaced with an ALTERNATIVE() which is convenient to use in asm. Switch to ALTERNATIVE() to use the VERW mitigation late in exit-to-user path. Also remove the now redundant VERW in exc_nmi() and arch_exit_to_user_mode(). Signed-off-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com> Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Link: https://lore.kernel.org/all/20240213-delay-verw-v8-4-a6216d83edb7%40linux.intel.com |
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Thomas Gleixner
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89b0f15f40 |
x86/cpu/topology: Get rid of cpuinfo::x86_max_cores
Now that __num_cores_per_package and __num_threads_per_package are available, cpuinfo::x86_max_cores and the related math all over the place can be replaced with the ready to consume data. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Michael Kelley <mhklinux@outlook.com> Tested-by: Sohil Mehta <sohil.mehta@intel.com> Link: https://lore.kernel.org/r/20240213210253.176147806@linutronix.de |
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Ingo Molnar
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4589f199eb |
Merge branch 'x86/bugs' into x86/core, to pick up pending changes before dependent patches
Merge in pending alternatives patching infrastructure changes, before applying more patches. Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Borislav Petkov (AMD)
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2995674833 |
x86/Kconfig: Remove CONFIG_AMD_MEM_ENCRYPT_ACTIVE_BY_DEFAULT
It was meant well at the time but nothing's using it so get rid of it. Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Acked-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20240202163510.GDZb0Zvj8qOndvFOiZ@fat_crate.local |