mirror of https://github.com/torvalds/linux.git
3065 Commits
| Author | SHA1 | Message | Date |
|---|---|---|---|
Al Viro
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4fc8728aa3 |
block: switch ->getgeo() to struct gendisk
Instances are happier that way and it makes more sense anyway - the only part of the result that is related to partition we are given is the start sector, and that has been filled in by the caller. Everything else is a function of the disk. Only one instance (DASD) is ever looking at anything other than bdev->bd_disk and that one is trivial to adjust. Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Acked-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> |
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Linus Torvalds
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beb6c8326e |
Mostly cleanups, except:
- dynamic addition of vfio passthrough devices - implementation of HAVE_SYSCALL_TRACEPOINTS -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEpeA8sTs3M8SN2hR410qiO8sPaAAFAmiIm+YACgkQ10qiO8sP aADNGw/8D+3rMvTcJyFPwZi3UAxyV/PQNFGe2UhPZf9SZlXKrzoku/+FaUtw66YG frmQb3tHbprJRdT1rb1bULtwRNpXifNf+LPcb4cjoci1z1qywZ5z5v8hfxYrjufr pw1f8Eev++EPDyQ6OdLMlZa5Sry0Cuf9xTC61ThCv95iUGVbGliPgMuA3LRf10Pd 99yZfzWv/K9MU53m+xtBNaO41Mn7B/ir6fam7Jrs2MpbeyJgB3bwETZs7ZI6P1sp +g+FtjQUdn5tFWBJ3Jpne0AH3dTU8cSN+QZ/1b1BzTVyyVDOvcXvDO5/XUAP51/Y TMeI3a1Y8LLzDHBluwHd3dwbmMMZjlvvvIXrexfuhA2bJWya9Jd1HSEh3l4CNIIB jnxNAHcswY6kClpCf3HTbdMZS5VqFZ1IUH1zcli62EtvpbCxVt82lgKuPBYs/p83 5vv59tr4n4ge6jm0P7WoyL75rsrY5y+XOtmbU1c3x5QzN6vCtGvVIqWdeZZMG2ge rXFUSdyRqmw4B3RvNGQ4jLhp6RZXUWDvamv/PfzU2vV1mz/wVo3nfGaX8olp5Fyq 7CxZegnO40wH1nj5JBP5zhh+AytSz0cbqPmZNfDYLA3lWnrJCANcmHRTkBxbN2+U PsBimJ5Y6xWZdaaxQjlrHkVHy8Iv8meDvwlJB55N3uY2lrGcndM= =WP21 -----END PGP SIGNATURE----- Merge tag 'uml-for-linux-6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/uml/linux Pull uml updates from Johannes Berg: "Mostly cleanups, except: - dynamic addition of vfio passthrough devices - implementation of HAVE_SYSCALL_TRACEPOINTS" * tag 'uml-for-linux-6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/uml/linux: um: Replace __ASSEMBLY__ with __ASSEMBLER__ in the usermode headers um: Stop tracking stub's PID via userspace_pid[] um: Remove the pid parameter of handle_trap() um: Use err consistently in userspace() um: vfio: Support adding devices via mconsole um: rtc: Avoid shadowing err in uml_rtc_start() um: Avoid redefining ARCH_HAS_CACHE_LINE_SIZE um: Make mm_list and mm_list_lock static um: Make unscheduled_userspace_iterations static um: Re-evaluate thread flags repeatedly um: simplify syscall header files um/ptrace: Implement HAVE_SYSCALL_TRACEPOINTS um/x86: Add system call table to header file um: virt-pci: Switch to msi_create_parent_irq_domain() um: virtio_pcidev: Rename UM_PCI_STAT_WAITING |
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Linus Torvalds
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126e5754e9 |
This series massages asm/param.h to simpler and more uniform shape.
By the end of it,
* all arch/*/include/uapi/asm/param.h are either generated includes
of <asm-generic/param.h> or a #define or two followed by such include.
* no arch/*/include/asm/param.h anywhere, generated or not.
* include <asm/param.h> resolves to arch/*/include/uapi/asm/param.h
of the architecture in question (or that of host in case of uml).
* include/asm-generic/param.h pulls uapi/asm-generic/param.h and
deals with USER_HZ, CLOCKS_PER_SEC and with HZ redefinition after that.
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Merge tag 'pull-headers_param' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull asm/param cleanup from Al Viro:
"This massages asm/param.h to simpler and more uniform shape:
- all arch/*/include/uapi/asm/param.h are either generated includes
of <asm-generic/param.h> or a #define or two followed by such
include
- no arch/*/include/asm/param.h anywhere, generated or not
- include <asm/param.h> resolves to arch/*/include/uapi/asm/param.h
of the architecture in question (or that of host in case of uml)
- include/asm-generic/param.h pulls uapi/asm-generic/param.h and
deals with USER_HZ, CLOCKS_PER_SEC and with HZ redefinition after
that"
* tag 'pull-headers_param' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
loongarch, um, xtensa: get rid of generated arch/$ARCH/include/asm/param.h
alpha: regularize the situation with asm/param.h
xtensa: get rid uapi/asm/param.h
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Thomas Huth
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fc9ed2f658 |
um: Replace __ASSEMBLY__ with __ASSEMBLER__ in the usermode headers
While the GCC and Clang compilers already define __ASSEMBLER__ automatically when compiling assembly code, __ASSEMBLY__ is a macro that only gets defined by the Makefiles in the kernel. This can be very confusing when switching between userspace and kernelspace coding, so let's standardize on the __ASSEMBLER__ macro that is provided by the compilers now. This is a completely mechanical patch (done with a simple "sed -i" statement). Cc: Richard Weinberger <richard@nod.at> Cc: Anton Ivanov <anton.ivanov@cambridgegreys.com> Cc: Johannes Berg <johannes@sipsolutions.net> Cc: linux-um@lists.infradead.org Signed-off-by: Thomas Huth <thuth@redhat.com> Link: https://patch.msgid.link/20250314071013.1575167-36-thuth@redhat.com Signed-off-by: Johannes Berg <johannes.berg@intel.com> |
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Tiwei Bie
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f7e9077a16 |
um: Stop tracking stub's PID via userspace_pid[]
The PID of the stub process can be obtained from current_mm_id(). There is no need to track it via userspace_pid[]. Stop doing that to simplify the code. Signed-off-by: Tiwei Bie <tiwei.btw@antgroup.com> Link: https://patch.msgid.link/20250711065021.2535362-4-tiwei.bie@linux.dev Signed-off-by: Johannes Berg <johannes.berg@intel.com> |
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Tiwei Bie
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b3fb0eb5c2 |
um: Remove the pid parameter of handle_trap()
It's no longer used. Remove it. Signed-off-by: Tiwei Bie <tiwei.btw@antgroup.com> Link: https://patch.msgid.link/20250711065021.2535362-3-tiwei.bie@linux.dev Signed-off-by: Johannes Berg <johannes.berg@intel.com> |
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Tiwei Bie
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cba737fa59 |
um: Use err consistently in userspace()
Avoid declaring a new variable 'ret' inside the 'if (using_seccomp)' block, as the existing 'err' variable declared at the top of the function already serves the same purpose. Signed-off-by: Tiwei Bie <tiwei.btw@antgroup.com> Link: https://patch.msgid.link/20250711065021.2535362-2-tiwei.bie@linux.dev Signed-off-by: Johannes Berg <johannes.berg@intel.com> |
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Tiwei Bie
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8129b9e8e3 |
um: vfio: Support adding devices via mconsole
It can be used when we want to pass through PCI devices to UML while it's up and running. PCI devices can be passed through to UML using the same syntax as the command line option: (mconsole) config vfio_uml.device=<domain🚌slot.function> Signed-off-by: Tiwei Bie <tiwei.btw@antgroup.com> Link: https://patch.msgid.link/20250709010021.1076902-1-tiwei.bie@linux.dev Signed-off-by: Johannes Berg <johannes.berg@intel.com> |
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Tiwei Bie
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4c916e3b22 |
um: rtc: Avoid shadowing err in uml_rtc_start()
Remove the declaration of 'err' inside the 'if (timetravel)' block,
as it would otherwise be unavailable outside that block, potentially
leading to uml_rtc_start() returning an uninitialized value.
Fixes:
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Tiwei Bie
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5d2c5b8c41 |
um: Avoid redefining ARCH_HAS_CACHE_LINE_SIZE
There is a generic ARCH_HAS_CACHE_LINE_SIZE option introduced by
commit
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Tiwei Bie
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409a0c00c4 |
um: Make mm_list and mm_list_lock static
They are only used within mmu.c. Make them static. Signed-off-by: Tiwei Bie <tiwei.btw@antgroup.com> Link: https://patch.msgid.link/20250708090403.1067440-3-tiwei.bie@linux.dev Signed-off-by: Johannes Berg <johannes.berg@intel.com> |
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Tiwei Bie
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159e76514b |
um: Make unscheduled_userspace_iterations static
It's only used within process.c. Make it static. Signed-off-by: Tiwei Bie <tiwei.btw@antgroup.com> Link: https://patch.msgid.link/20250708090403.1067440-2-tiwei.bie@linux.dev Signed-off-by: Johannes Berg <johannes.berg@intel.com> |
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Thomas Weißschuh
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b9e2f2246e |
um: Re-evaluate thread flags repeatedly
The thread flags may change during their processing. For example a task_work can queue a new signal to be sent. This signal should be delivered before returning to usespace again. Evaluate the flags repeatedly similar to other architectures. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Reviewed-by: Nam Cao <namcao@linutronix.de> Link: https://patch.msgid.link/20250704-uml-thread_flags-v1-1-0e293fd8d627@linutronix.de Signed-off-by: Johannes Berg <johannes.berg@intel.com> |
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Johannes Berg
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ac1ad16f10 |
um: simplify syscall header files
Since Thomas's recent commit 2af10530639b ("um/x86: Add
system call table to header file") , we now have two
extern declarations of the syscall table, one internal
and one external, and they don't even match on 32-bit.
Clean this up and remove all the extra code.
Reviewed-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Link: https://patch.msgid.link/20250704141243.a68366f6acc3.If8587a4aafdb90644fc6d0b2f5e31a2d1887915f@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Thomas Weißschuh
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2a713f04ed |
um/ptrace: Implement HAVE_SYSCALL_TRACEPOINTS
Implement syscall tracepoints through the generic tracing infrastructure. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Reviewed-by: Nam Cao <namcao@linutronix.de> Link: https://patch.msgid.link/20250703-uml-have_syscall_tracepoints-v1-2-23c1d3808578@linutronix.de Signed-off-by: Johannes Berg <johannes.berg@intel.com> |
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Nam Cao
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c36e5eb9dd |
um: virt-pci: Switch to msi_create_parent_irq_domain()
Move away from the legacy MSI domain setup, switch to use msi_create_parent_irq_domain(). Signed-off-by: Nam Cao <namcao@linutronix.de> Acked-by: Johannes Berg <johannes@sipsolutions.net> Tested-by: Johannes Berg <johannes@sipsolutions.net> Link: https://patch.msgid.link/5f0bd8e877e7bfdfb1a7e99d6b126caf6a7eea48.1751266049.git.namcao@linutronix.de Signed-off-by: Johannes Berg <johannes.berg@intel.com> |
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Tiwei Bie
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4c5ba7acd7 |
um: virtio_pcidev: Rename UM_PCI_STAT_WAITING
Rename it to VIRTIO_PCIDEV_STAT_WAITING to make the code slightly more consistent. It was missed when refactoring virtio_pcidev into a separate module. Signed-off-by: Tiwei Bie <tiwei.btw@antgroup.com> Link: https://patch.msgid.link/20250606124428.148164-3-tiwei.btw@antgroup.com Signed-off-by: Johannes Berg <johannes.berg@intel.com> |
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Tiwei Bie
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2d65fc13be |
um: vector: Reduce stack usage in vector_eth_configure()
When compiling with clang (19.1.7), initializing *vp using a compound literal may result in excessive stack usage. Fix it by initializing the required fields of *vp individually. Without this patch: $ objdump -d arch/um/drivers/vector_kern.o | ./scripts/checkstack.pl x86_64 0 ... 0x0000000000000540 vector_eth_configure [vector_kern.o]:1472 ... With this patch: $ objdump -d arch/um/drivers/vector_kern.o | ./scripts/checkstack.pl x86_64 0 ... 0x0000000000000540 vector_eth_configure [vector_kern.o]:208 ... Reported-by: kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202506221017.WtB7Usua-lkp@intel.com/ Signed-off-by: Tiwei Bie <tiwei.btw@antgroup.com> Link: https://patch.msgid.link/20250623110829.314864-1-tiwei.btw@antgroup.com Signed-off-by: Johannes Berg <johannes.berg@intel.com> |
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Tiwei Bie
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bc4e2ae081 |
um: vfio: Prevent duplicate device assignments
Ensure devices are assigned only once. Reject subsequent requests
for duplicate assignments.
Fixes:
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Tiwei Bie
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c55c7a85e0 |
um: ubd: Add missing error check in start_io_thread()
The subsequent call to os_set_fd_block() overwrites the previous
return value. OR the two return values together to fix it.
Fixes:
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Al Viro
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2560014ec1 |
loongarch, um, xtensa: get rid of generated arch/$ARCH/include/asm/param.h
For loongarch and xtensa that gets them to do what x86 et.al. are doing - have asm/param.h resolve to uapi variant, which is generated by mandatory-y += param.h and contains exact same include. On um it will resolve to x86 uapi variant instead, which also contains the same include (um doesn't have uapi headers, but it does build the host ones). Reviewed-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> |
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Magnus Lindholm
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403d1338a4 |
mm: pgtable: fix pte_swp_exclusive
Make pte_swp_exclusive return bool instead of int. This will better reflect how pte_swp_exclusive is actually used in the code. This fixes swap/swapoff problems on Alpha due pte_swp_exclusive not returning correct values when _PAGE_SWP_EXCLUSIVE bit resides in upper 32-bits of PTE (like on alpha). Suggested-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Magnus Lindholm <linmag7@gmail.com> Cc: Sam James <sam@gentoo.org> Link: https://lore.kernel.org/lkml/20250218175735.19882-2-linmag7@gmail.com/ Link: https://lore.kernel.org/lkml/20250602041118.GA2675383@ZenIV/ [ Applied as the 'sed' script Al suggested - Linus ] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Ingo Molnar
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41cb08555c |
treewide, timers: Rename from_timer() to timer_container_of()
Move this API to the canonical timer_*() namespace. [ tglx: Redone against pre rc1 ] Signed-off-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/aB2X0jCKQO56WdMt@gmail.com |
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Linus Torvalds
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8630c59e99 |
Kbuild updates for v6.16
- Add support for the EXPORT_SYMBOL_GPL_FOR_MODULES() macro, which exports a
symbol only to specified modules
- Improve ABI handling in gendwarfksyms
- Forcibly link lib-y objects to vmlinux even if CONFIG_MODULES=n
- Add checkers for redundant or missing <linux/export.h> inclusion
- Deprecate the extra-y syntax
- Fix a genksyms bug when including enum constants from *.symref files
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Merge tag 'kbuild-v6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild updates from Masahiro Yamada:
- Add support for the EXPORT_SYMBOL_GPL_FOR_MODULES() macro, which
exports a symbol only to specified modules
- Improve ABI handling in gendwarfksyms
- Forcibly link lib-y objects to vmlinux even if CONFIG_MODULES=n
- Add checkers for redundant or missing <linux/export.h> inclusion
- Deprecate the extra-y syntax
- Fix a genksyms bug when including enum constants from *.symref files
* tag 'kbuild-v6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (28 commits)
genksyms: Fix enum consts from a reference affecting new values
arch: use always-$(KBUILD_BUILTIN) for vmlinux.lds
kbuild: set y instead of 1 to KBUILD_{BUILTIN,MODULES}
efi/libstub: use 'targets' instead of extra-y in Makefile
module: make __mod_device_table__* symbols static
scripts/misc-check: check unnecessary #include <linux/export.h> when W=1
scripts/misc-check: check missing #include <linux/export.h> when W=1
scripts/misc-check: add double-quotes to satisfy shellcheck
kbuild: move W=1 check for scripts/misc-check to top-level Makefile
scripts/tags.sh: allow to use alternative ctags implementation
kconfig: introduce menu type enum
docs: symbol-namespaces: fix reST warning with literal block
kbuild: link lib-y objects to vmlinux forcibly even when CONFIG_MODULES=n
tinyconfig: enable CONFIG_LD_DEAD_CODE_DATA_ELIMINATION
docs/core-api/symbol-namespaces: drop table of contents and section numbering
modpost: check forbidden MODULE_IMPORT_NS("module:") at compile time
kbuild: move kbuild syntax processing to scripts/Makefile.build
Makefile: remove dependency on archscripts for header installation
Documentation/kbuild: Add new gendwarfksyms kABI rules
Documentation/kbuild: Drop section numbers
...
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Masahiro Yamada
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e21efe833e |
arch: use always-$(KBUILD_BUILTIN) for vmlinux.lds
The extra-y syntax is deprecated. Instead, use always-$(KBUILD_BUILTIN), which behaves equivalently. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Acked-by: Johannes Berg <johannes@sipsolutions.net> Reviewed-by: Nicolas Schier <n.schier@avm.de> |
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Linus Torvalds
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cfc4ca8986 |
Notable changes:
- remove obsolete network transports
- remove PCI IO port support
- start adding seccomp-based process handling
instead of ptrace
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Merge tag 'uml-for-linux-6.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/uml/linux
Pull UML updates from Johannes Berg:
"The only really new thing is the long-standing seccomp work
(originally from 2021!). Wven if it still isn't enabled by default due
to security concerns it can still be used e.g. for tests.
- remove obsolete network transports
- remove PCI IO port support
- start adding seccomp-based process handling instead of ptrace"
* tag 'uml-for-linux-6.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/uml/linux: (29 commits)
um: remove "extern" from implementation of sigchld_handler
um: fix unused variable warning
um: fix SECCOMP 32bit xstate register restore
um: pass FD for memory operations when needed
um: Add SECCOMP support detection and initialization
um: Implement kernel side of SECCOMP based process handling
um: Track userspace children dying in SECCOMP mode
um: Add helper functions to get/set state for SECCOMP
um: Add stub side of SECCOMP/futex based process handling
um: Move faultinfo extraction into userspace routine
um: vector: Use mac_pton() for MAC address parsing
um: vector: Clean up and modernize log messages
um: chan_kern: use raw spinlock for irqs_to_free_lock
MAINTAINERS: remove obsolete file entry in TUN/TAP DRIVER
um: Fix tgkill compile error on old host OSes
um: stop using PCI port I/O
um: Remove legacy network transport infrastructure
um: vector: Eliminate the dependency on uml_net
um: Remove obsolete legacy network transports
um/asm: Replace "REP; NOP" with PAUSE mnemonic
...
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Benjamin Berg
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e56a50ff7c |
um: remove "extern" from implementation of sigchld_handler
There is no need to mark the function as extern in the implementation.
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202506051226.X8r7X5aa-lkp@intel.com/
Fixes:
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Benjamin Berg
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942349413a |
um: fix SECCOMP 32bit xstate register restore
There was a typo that caused the extended FP state to be copied into the
wrong location on 32 bit. On 32 bit we only store the xstate internally
as that already contains everything. However, for compatibility, the
mcontext on 32 bit first contains the legacy FP state and then the
xstate.
The code copied the xstate on top of the legacy FP state instead of
using the correct offset. This offset was already calculated in the
xstate_* variables, so simply switch to those to fix the problem.
With this SECCOMP mode works on 32 bit, so lift the restriction.
Fixes:
|
|
|
Benjamin Berg
|
e92e255285 |
um: pass FD for memory operations when needed
Instead of always sharing the FDs with the userspace process, only hand over the FDs needed for mmap when required. The idea is that userspace might be able to force the stub into executing an mmap syscall, however, it will not be able to manipulate the control flow sufficiently to have access to an FD that would allow mapping arbitrary memory. Security wise, we need to be sure that only the expected syscalls are executed after the kernel sends FDs through the socket. This is currently not the case, as userspace can trivially jump to the rt_sigreturn syscall instruction to execute any syscall that the stub is permitted to do. With this, it can trick the kernel to send the FD, which in turn allows userspace to freely map any physical memory. As such, this is currently *not* secure. However, in principle the approach should be fine with a more strict SECCOMP filter and a careful review of the stub control flow (as userspace can prepare a stack). With some care, it is likely possible to extend the security model to SMP if desired. Signed-off-by: Benjamin Berg <benjamin.berg@intel.com> Link: https://patch.msgid.link/20250602130052.545733-8-benjamin@sipsolutions.net Signed-off-by: Johannes Berg <johannes.berg@intel.com> |
|
Benjamin Berg
|
beddc9fb1c |
um: Add SECCOMP support detection and initialization
This detects seccomp support, sets the global using_seccomp variable and initilizes the exec registers. The support is only enabled if the seccomp= kernel parameter is set to either "on" or "auto". With "auto" a fallback to ptrace mode will happen if initialization failed. Signed-off-by: Benjamin Berg <benjamin@sipsolutions.net> Signed-off-by: Benjamin Berg <benjamin.berg@intel.com> Link: https://patch.msgid.link/20250602130052.545733-7-benjamin@sipsolutions.net [extend help with Kconfig text from v2, use exit syscall instead of libc, remove unneeded mctx_offset assignment, disable on 32-bit for now] Signed-off-by: Johannes Berg <johannes.berg@intel.com> |
|
|
Benjamin Berg
|
406d17c6c3 |
um: Implement kernel side of SECCOMP based process handling
This adds the kernel side of the seccomp based process handling. Co-authored-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Benjamin Berg <benjamin@sipsolutions.net> Signed-off-by: Benjamin Berg <benjamin.berg@intel.com> Link: https://patch.msgid.link/20250602130052.545733-6-benjamin@sipsolutions.net Signed-off-by: Johannes Berg <johannes.berg@intel.com> |
|
|
Benjamin Berg
|
8420e08fe3 |
um: Track userspace children dying in SECCOMP mode
When in seccomp mode, we would hang forever on the futex if a child has died unexpectedly. In contrast, ptrace mode will notice it and kill the corresponding thread when it fails to run it. Fix this issue using a new IRQ that is fired after a SIGCHLD and keeping an (internal) list of all MMs. In the IRQ handler, find the affected MM and set its PID to -1 as well as the futex variable to FUTEX_IN_KERN. This, together with futex returning -EINTR after the signal is sufficient to implement a race-free detection of a child dying. Note that this also enables IRQ handling while starting a userspace process. This should be safe and SECCOMP requires the IRQ in case the process does not come up properly. Signed-off-by: Benjamin Berg <benjamin@sipsolutions.net> Signed-off-by: Benjamin Berg <benjamin.berg@intel.com> Link: https://patch.msgid.link/20250602130052.545733-5-benjamin@sipsolutions.net Signed-off-by: Johannes Berg <johannes.berg@intel.com> |
|
|
Benjamin Berg
|
dac494bf54 |
um: Add stub side of SECCOMP/futex based process handling
This adds the stub side for the new seccomp process management code. In this case we do register save/restore through the signal handler mcontext. Add special code for handling TLS, which for x86_64 means setting the FS_BASE/GS_BASE registers while for i386 it means calling the set_thread_area syscall. Co-authored-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Benjamin Berg <benjamin@sipsolutions.net> Signed-off-by: Benjamin Berg <benjamin.berg@intel.com> Link: https://patch.msgid.link/20250602130052.545733-3-benjamin@sipsolutions.net Signed-off-by: Johannes Berg <johannes.berg@intel.com> |
|
|
Benjamin Berg
|
247ed9e4a6 |
um: Move faultinfo extraction into userspace routine
The segv handler is called slightly differently depending on whether PTRACE_FULL_FAULTINFO is set or not (32bit vs. 64bit). The only difference is that we don't try to pass the registers and instruction pointer to the segv handler. It would be good to either document or remove the difference, but I do not know why this difference exists. And, passing NULL can even result in a crash. Signed-off-by: Benjamin Berg <benjamin@sipsolutions.net> Link: https://patch.msgid.link/20250602130052.545733-2-benjamin@sipsolutions.net Signed-off-by: Johannes Berg <johannes.berg@intel.com> |
|
|
Tiwei Bie
|
b76d18b53a |
um: vector: Use mac_pton() for MAC address parsing
Use mac_pton() instead of custom approach. Suggested-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Tiwei Bie <tiwei.btw@antgroup.com> Link: https://patch.msgid.link/20250506045117.1896661-3-tiwei.btw@antgroup.com Signed-off-by: Johannes Berg <johannes.berg@intel.com> |
|
|
Tiwei Bie
|
477c1c21da |
um: vector: Clean up and modernize log messages
Use pr_*() and netdev_*() to print log messages. While at it, join split messages for easier grepping. Suggested-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Tiwei Bie <tiwei.btw@antgroup.com> Link: https://patch.msgid.link/20250506045117.1896661-2-tiwei.btw@antgroup.com Signed-off-by: Johannes Berg <johannes.berg@intel.com> |
|
|
Johannes Berg
|
10eabeca45 |
um: chan_kern: use raw spinlock for irqs_to_free_lock
Since this is called deep in the ARCH=um IRQ infrastructure it must use a raw spinlock. It's not really part of the driver, but rather the core UML IRQ code. Link: https://patch.msgid.link/20250505103358.ae7dc659f8b4.I64ca7aece30e0b4b0b5b35ad89cdd63db197c0ce@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com> |
|
Yongting Lin
|
fd05418899 |
um: Fix tgkill compile error on old host OSes
tgkill is a quite old syscall since kernel 2.5.75, but unfortunately glibc
doesn't support it before 2.30. Thus some systems fail to compile the
latest UserMode Linux.
Here is the compile error I encountered when I tried to compile UML in
my system shipped with glibc-2.28.
CALL scripts/checksyscalls.sh
CC arch/um/os-Linux/sigio.o
In file included from arch/um/os-Linux/sigio.c:17:
arch/um/os-Linux/sigio.c: In function ‘write_sigio_thread’:
arch/um/os-Linux/sigio.c:49:19: error: implicit declaration of function ‘tgkill’; did you mean ‘kill’? [-Werror=implicit-function-declaration]
CATCH_EINTR(r = tgkill(pid, pid, SIGIO));
^~~~~~
./arch/um/include/shared/os.h:21:48: note: in definition of macro ‘CATCH_EINTR’
#define CATCH_EINTR(expr) while ((errno = 0, ((expr) < 0)) && (errno == EINTR))
^~~~
cc1: some warnings being treated as errors
Fix it by Replacing glibc call with raw syscall.
Fixes:
|
|
Arnd Bergmann
|
b8c9c3b822 |
um: stop using PCI port I/O
arch/um is one of the last users of CONFIG_GENERIC_IOMAP, but upon
closer look it appears that the PCI host bridge does not register
any port I/O, and the absense of both custom inb/outb functions and
a PCI_IOBASE constant means that actually trying to use port I/O
results on a NULL pointer access.
Build testing with clang confirms this by warning about this exact
problem:
include/asm-generic/io.h:549:31: error: performing pointer arithmetic on a null pointer has undefined behavior [-Werror,-Wnull-pointer-arithmetic]
549 | val = __raw_readb(PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
Remove all the Kconfig selects that refer to legacy port I/O
and instead just build the normal MMIO path that is emulated
by the virtio PCI host.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://patch.msgid.link/20250509084125.1488601-1-arnd@kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
|
|
|
Linus Torvalds
|
00c010e130 |
- The 11 patch series "Add folio_mk_pte()" from Matthew Wilcox
simplifies the act of creating a pte which addresses the first page in a folio and reduces the amount of plumbing which architecture must implement to provide this. - The 8 patch series "Misc folio patches for 6.16" from Matthew Wilcox is a shower of largely unrelated folio infrastructure changes which clean things up and better prepare us for future work. - The 3 patch series "memory,x86,acpi: hotplug memory alignment advisement" from Gregory Price adds early-init code to prevent x86 from leaving physical memory unused when physical address regions are not aligned to memory block size. - The 2 patch series "mm/compaction: allow more aggressive proactive compaction" from Michal Clapinski provides some tuning of the (sadly, hard-coded (more sadly, not auto-tuned)) thresholds for our invokation of proactive compaction. In a simple test case, the reduction of a guest VM's memory consumption was dramatic. - The 8 patch series "Minor cleanups and improvements to swap freeing code" from Kemeng Shi provides some code cleaups and a small efficiency improvement to this part of our swap handling code. - The 6 patch series "ptrace: introduce PTRACE_SET_SYSCALL_INFO API" from Dmitry Levin adds the ability for a ptracer to modify syscalls arguments. At this time we can alter only "system call information that are used by strace system call tampering, namely, syscall number, syscall arguments, and syscall return value. This series should have been incorporated into mm.git's "non-MM" branch, but I goofed. - The 3 patch series "fs/proc: extend the PAGEMAP_SCAN ioctl to report guard regions" from Andrei Vagin extends the info returned by the PAGEMAP_SCAN ioctl against /proc/pid/pagemap. This permits CRIU to more efficiently get at the info about guard regions. - The 2 patch series "Fix parameter passed to page_mapcount_is_type()" from Gavin Shan implements that fix. No runtime effect is expected because validate_page_before_insert() happens to fix up this error. - The 3 patch series "kernel/events/uprobes: uprobe_write_opcode() rewrite" from David Hildenbrand basically brings uprobe text poking into the current decade. Remove a bunch of hand-rolled implementation in favor of using more current facilities. - The 3 patch series "mm/ptdump: Drop assumption that pxd_val() is u64" from Anshuman Khandual provides enhancements and generalizations to the pte dumping code. This might be needed when 128-bit Page Table Descriptors are enabled for ARM. - The 12 patch series "Always call constructor for kernel page tables" from Kevin Brodsky "ensures that the ctor/dtor is always called for kernel pgtables, as it already is for user pgtables". This permits the addition of more functionality such as "insert hooks to protect page tables". This change does result in various architectures performing unnecesary work, but this is fixed up where it is anticipated to occur. - The 9 patch series "Rust support for mm_struct, vm_area_struct, and mmap" from Alice Ryhl adds plumbing to permit Rust access to core MM structures. - The 3 patch series "fix incorrectly disallowed anonymous VMA merges" from Lorenzo Stoakes takes advantage of some VMA merging opportunities which we've been missing for 15 years. - The 4 patch series "mm/madvise: batch tlb flushes for MADV_DONTNEED and MADV_FREE" from SeongJae Park optimizes process_madvise()'s TLB flushing. Instead of flushing each address range in the provided iovec, we batch the flushing across all the iovec entries. The syscall's cost was approximately halved with a microbenchmark which was designed to load this particular operation. - The 6 patch series "Track node vacancy to reduce worst case allocation counts" from Sidhartha Kumar makes the maple tree smarter about its node preallocation. stress-ng mmap performance increased by single-digit percentages and the amount of unnecessarily preallocated memory was dramaticelly reduced. - The 3 patch series "mm/gup: Minor fix, cleanup and improvements" from Baoquan He removes a few unnecessary things which Baoquan noted when reading the code. - The 3 patch series ""Enhance sysfs handling for memory hotplug in weighted interleave" from Rakie Kim "enhances the weighted interleave policy in the memory management subsystem by improving sysfs handling, fixing memory leaks, and introducing dynamic sysfs updates for memory hotplug support". Fixes things on error paths which we are unlikely to hit. - The 7 patch series "mm/damon: auto-tune DAMOS for NUMA setups including tiered memory" from SeongJae Park introduces new DAMOS quota goal metrics which eliminate the manual tuning which is required when utilizing DAMON for memory tiering. - The 5 patch series "mm/vmalloc.c: code cleanup and improvements" from Baoquan He provides cleanups and small efficiency improvements which Baoquan found via code inspection. - The 2 patch series "vmscan: enforce mems_effective during demotion" from Gregory Price "changes reclaim to respect cpuset.mems_effective during demotion when possible". because "presently, reclaim explicitly ignores cpuset.mems_effective when demoting, which may cause the cpuset settings to violated." "This is useful for isolating workloads on a multi-tenant system from certain classes of memory more consistently." - The 2 patch series ""Clean up split_huge_pmd_locked() and remove unnecessary folio pointers" from Gavin Guo provides minor cleanups and efficiency gains in in the huge page splitting and migrating code. - The 3 patch series "Use kmem_cache for memcg alloc" from Huan Yang creates a slab cache for `struct mem_cgroup', yielding improved memory utilization. - The 4 patch series "add max arg to swappiness in memory.reclaim and lru_gen" from Zhongkun He adds a new "max" argument to the "swappiness=" argument for memory.reclaim MGLRU's lru_gen. This directs proactive reclaim to reclaim from only anon folios rather than file-backed folios. - The 17 patch series "kexec: introduce Kexec HandOver (KHO)" from Mike Rapoport is the first step on the path to permitting the kernel to maintain existing VMs while replacing the host kernel via file-based kexec. At this time only memblock's reserve_mem is preserved. - The 7 patch series "mm: Introduce for_each_valid_pfn()" from David Woodhouse provides and uses a smarter way of looping over a pfn range. By skipping ranges of invalid pfns. - The 2 patch series "sched/numa: Skip VMA scanning on memory pinned to one NUMA node via cpuset.mems" from Libo Chen removes a lot of pointless VMA scanning when a task is pinned a single NUMA mode. Dramatic performance benefits were seen in some real world cases. - The 2 patch series "JFS: Implement migrate_folio for jfs_metapage_aops" from Shivank Garg addresses a warning which occurs during memory compaction when using JFS. - The 4 patch series "move all VMA allocation, freeing and duplication logic to mm" from Lorenzo Stoakes moves some VMA code from kernel/fork.c into the more appropriate mm/vma.c. - The 6 patch series "mm, swap: clean up swap cache mapping helper" from Kairui Song provides code consolidation and cleanups related to the folio_index() function. - The 2 patch series "mm/gup: Cleanup memfd_pin_folios()" from Vishal Moola does that. - The 8 patch series "memcg: Fix test_memcg_min/low test failures" from Waiman Long addresses some bogus failures which are being reported by the test_memcontrol selftest. - The 3 patch series "eliminate mmap() retry merge, add .mmap_prepare hook" from Lorenzo Stoakes commences the deprecation of file_operations.mmap() in favor of the new file_operations.mmap_prepare(). The latter is more restrictive and prevents drivers from messing with things in ways which, amongst other problems, may defeat VMA merging. - The 4 patch series "memcg: decouple memcg and objcg stocks"" from Shakeel Butt decouples the per-cpu memcg charge cache from the objcg's one. This is a step along the way to making memcg and objcg charging NMI-safe, which is a BPF requirement. - The 6 patch series "mm/damon: minor fixups and improvements for code, tests, and documents" from SeongJae Park is "yet another batch of miscellaneous DAMON changes. Fix and improve minor problems in code, tests and documents." - The 7 patch series "memcg: make memcg stats irq safe" from Shakeel Butt converts memcg stats to be irq safe. Another step along the way to making memcg charging and stats updates NMI-safe, a BPF requirement. - The 4 patch series "Let unmap_hugepage_range() and several related functions take folio instead of page" from Fan Ni provides folio conversions in the hugetlb code. -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCaDt5qgAKCRDdBJ7gKXxA ju6XAP9nTiSfRz8Cz1n5LJZpFKEGzLpSihCYyR6P3o1L9oe3mwEAlZ5+XAwk2I5x Qqb/UGMEpilyre1PayQqOnct3aSL9Ao= =tYYm -----END PGP SIGNATURE----- Merge tag 'mm-stable-2025-05-31-14-50' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull MM updates from Andrew Morton: - "Add folio_mk_pte()" from Matthew Wilcox simplifies the act of creating a pte which addresses the first page in a folio and reduces the amount of plumbing which architecture must implement to provide this. - "Misc folio patches for 6.16" from Matthew Wilcox is a shower of largely unrelated folio infrastructure changes which clean things up and better prepare us for future work. - "memory,x86,acpi: hotplug memory alignment advisement" from Gregory Price adds early-init code to prevent x86 from leaving physical memory unused when physical address regions are not aligned to memory block size. - "mm/compaction: allow more aggressive proactive compaction" from Michal Clapinski provides some tuning of the (sadly, hard-coded (more sadly, not auto-tuned)) thresholds for our invokation of proactive compaction. In a simple test case, the reduction of a guest VM's memory consumption was dramatic. - "Minor cleanups and improvements to swap freeing code" from Kemeng Shi provides some code cleaups and a small efficiency improvement to this part of our swap handling code. - "ptrace: introduce PTRACE_SET_SYSCALL_INFO API" from Dmitry Levin adds the ability for a ptracer to modify syscalls arguments. At this time we can alter only "system call information that are used by strace system call tampering, namely, syscall number, syscall arguments, and syscall return value. This series should have been incorporated into mm.git's "non-MM" branch, but I goofed. - "fs/proc: extend the PAGEMAP_SCAN ioctl to report guard regions" from Andrei Vagin extends the info returned by the PAGEMAP_SCAN ioctl against /proc/pid/pagemap. This permits CRIU to more efficiently get at the info about guard regions. - "Fix parameter passed to page_mapcount_is_type()" from Gavin Shan implements that fix. No runtime effect is expected because validate_page_before_insert() happens to fix up this error. - "kernel/events/uprobes: uprobe_write_opcode() rewrite" from David Hildenbrand basically brings uprobe text poking into the current decade. Remove a bunch of hand-rolled implementation in favor of using more current facilities. - "mm/ptdump: Drop assumption that pxd_val() is u64" from Anshuman Khandual provides enhancements and generalizations to the pte dumping code. This might be needed when 128-bit Page Table Descriptors are enabled for ARM. - "Always call constructor for kernel page tables" from Kevin Brodsky ensures that the ctor/dtor is always called for kernel pgtables, as it already is for user pgtables. This permits the addition of more functionality such as "insert hooks to protect page tables". This change does result in various architectures performing unnecesary work, but this is fixed up where it is anticipated to occur. - "Rust support for mm_struct, vm_area_struct, and mmap" from Alice Ryhl adds plumbing to permit Rust access to core MM structures. - "fix incorrectly disallowed anonymous VMA merges" from Lorenzo Stoakes takes advantage of some VMA merging opportunities which we've been missing for 15 years. - "mm/madvise: batch tlb flushes for MADV_DONTNEED and MADV_FREE" from SeongJae Park optimizes process_madvise()'s TLB flushing. Instead of flushing each address range in the provided iovec, we batch the flushing across all the iovec entries. The syscall's cost was approximately halved with a microbenchmark which was designed to load this particular operation. - "Track node vacancy to reduce worst case allocation counts" from Sidhartha Kumar makes the maple tree smarter about its node preallocation. stress-ng mmap performance increased by single-digit percentages and the amount of unnecessarily preallocated memory was dramaticelly reduced. - "mm/gup: Minor fix, cleanup and improvements" from Baoquan He removes a few unnecessary things which Baoquan noted when reading the code. - ""Enhance sysfs handling for memory hotplug in weighted interleave" from Rakie Kim "enhances the weighted interleave policy in the memory management subsystem by improving sysfs handling, fixing memory leaks, and introducing dynamic sysfs updates for memory hotplug support". Fixes things on error paths which we are unlikely to hit. - "mm/damon: auto-tune DAMOS for NUMA setups including tiered memory" from SeongJae Park introduces new DAMOS quota goal metrics which eliminate the manual tuning which is required when utilizing DAMON for memory tiering. - "mm/vmalloc.c: code cleanup and improvements" from Baoquan He provides cleanups and small efficiency improvements which Baoquan found via code inspection. - "vmscan: enforce mems_effective during demotion" from Gregory Price changes reclaim to respect cpuset.mems_effective during demotion when possible. because presently, reclaim explicitly ignores cpuset.mems_effective when demoting, which may cause the cpuset settings to violated. This is useful for isolating workloads on a multi-tenant system from certain classes of memory more consistently. - "Clean up split_huge_pmd_locked() and remove unnecessary folio pointers" from Gavin Guo provides minor cleanups and efficiency gains in in the huge page splitting and migrating code. - "Use kmem_cache for memcg alloc" from Huan Yang creates a slab cache for `struct mem_cgroup', yielding improved memory utilization. - "add max arg to swappiness in memory.reclaim and lru_gen" from Zhongkun He adds a new "max" argument to the "swappiness=" argument for memory.reclaim MGLRU's lru_gen. This directs proactive reclaim to reclaim from only anon folios rather than file-backed folios. - "kexec: introduce Kexec HandOver (KHO)" from Mike Rapoport is the first step on the path to permitting the kernel to maintain existing VMs while replacing the host kernel via file-based kexec. At this time only memblock's reserve_mem is preserved. - "mm: Introduce for_each_valid_pfn()" from David Woodhouse provides and uses a smarter way of looping over a pfn range. By skipping ranges of invalid pfns. - "sched/numa: Skip VMA scanning on memory pinned to one NUMA node via cpuset.mems" from Libo Chen removes a lot of pointless VMA scanning when a task is pinned a single NUMA mode. Dramatic performance benefits were seen in some real world cases. - "JFS: Implement migrate_folio for jfs_metapage_aops" from Shivank Garg addresses a warning which occurs during memory compaction when using JFS. - "move all VMA allocation, freeing and duplication logic to mm" from Lorenzo Stoakes moves some VMA code from kernel/fork.c into the more appropriate mm/vma.c. - "mm, swap: clean up swap cache mapping helper" from Kairui Song provides code consolidation and cleanups related to the folio_index() function. - "mm/gup: Cleanup memfd_pin_folios()" from Vishal Moola does that. - "memcg: Fix test_memcg_min/low test failures" from Waiman Long addresses some bogus failures which are being reported by the test_memcontrol selftest. - "eliminate mmap() retry merge, add .mmap_prepare hook" from Lorenzo Stoakes commences the deprecation of file_operations.mmap() in favor of the new file_operations.mmap_prepare(). The latter is more restrictive and prevents drivers from messing with things in ways which, amongst other problems, may defeat VMA merging. - "memcg: decouple memcg and objcg stocks"" from Shakeel Butt decouples the per-cpu memcg charge cache from the objcg's one. This is a step along the way to making memcg and objcg charging NMI-safe, which is a BPF requirement. - "mm/damon: minor fixups and improvements for code, tests, and documents" from SeongJae Park is yet another batch of miscellaneous DAMON changes. Fix and improve minor problems in code, tests and documents. - "memcg: make memcg stats irq safe" from Shakeel Butt converts memcg stats to be irq safe. Another step along the way to making memcg charging and stats updates NMI-safe, a BPF requirement. - "Let unmap_hugepage_range() and several related functions take folio instead of page" from Fan Ni provides folio conversions in the hugetlb code. * tag 'mm-stable-2025-05-31-14-50' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (285 commits) mm: pcp: increase pcp->free_count threshold to trigger free_high mm/hugetlb: convert use of struct page to folio in __unmap_hugepage_range() mm/hugetlb: refactor __unmap_hugepage_range() to take folio instead of page mm/hugetlb: refactor unmap_hugepage_range() to take folio instead of page mm/hugetlb: pass folio instead of page to unmap_ref_private() memcg: objcg stock trylock without irq disabling memcg: no stock lock for cpu hot-unplug memcg: make __mod_memcg_lruvec_state re-entrant safe against irqs memcg: make count_memcg_events re-entrant safe against irqs memcg: make mod_memcg_state re-entrant safe against irqs memcg: move preempt disable to callers of memcg_rstat_updated memcg: memcg_rstat_updated re-entrant safe against irqs mm: khugepaged: decouple SHMEM and file folios' collapse selftests/eventfd: correct test name and improve messages alloc_tag: check mem_profiling_support in alloc_tag_init Docs/damon: update titles and brief introductions to explain DAMOS selftests/damon/_damon_sysfs: read tried regions directories in order mm/damon/tests/core-kunit: add a test for damos_set_filters_default_reject() mm/damon/paddr: remove unused variable, folio_list, in damon_pa_stat() mm/damon/sysfs-schemes: fix wrong comment on damons_sysfs_quota_goal_metric_strs ... |
|
|
Linus Torvalds
|
dee264c16a |
require gcc-8 and binutils-2.30
x86 already uses gcc-8 as the minimum version, this changes all other architectures to the same version. gcc-8 is used is Debian 10 and Red Hat Enterprise Linux 8, both of which are still supported, and binutils 2.30 is the oldest corresponding version on those. Ubuntu Pro 18.04 and SUSE Linux Enterprise Server 15 both use gcc-7 as the system compiler but additionally include toolchains that remain supported. With the new minimum toolchain versions, a number of workarounds for older versions can be dropped, in particular on x86_64 and arm64. Importantly, the updated compiler version allows removing two of the five remaining gcc plugins, as support for sancov and structeak features is already included in modern compiler versions. I tried collecting the known changes that are possible based on the new toolchain version, but expect that more cleanups will be possible. Since this touches multiple architectures, I merged the patches through the asm-generic tree. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEo6/YBQwIrVS28WGKmmx57+YAGNkFAmg6vNMACgkQmmx57+YA GNkOmg/+LtR9B2P27GPBeG8HnLTZ8hKELiyYeSk6ZFgQv5hevE37HV35Yru7e7gu wcF6CgYr8ff4CVcHM7y0790oGew1thkqq5CklFIH0EwCDJx/mWfZR1SS2jfZIEWM HSDOlQQd1S8oWia14tSnQos3nW3CB9/ABVTHH+Wvl3xn48WMRvgK2LJgGLuxJrt8 5DD9auHiLjchWB5tB4DU98IgWWgFUGMTsI6IayZ4dkF4CdWqd89h0Y3pjJYeBgHS mPxzR2q8WjEmG9hp7QuZQgn/pAYleJAwHvvkoLrkQ2ieqx3FjWiwFbQp4CG1Sc8L eBR1lnkqS2z/e7xJLfe86fOoKWWu4I0tZKhRan/0+UOGm5nXrGpqSxKS8ZDsRuAp 3fvyhIp1cYSa7Xkok8BFhLEFR0tguXJXnXBc3tWE5VXIfFNd0Ohh1GUYhXDAqWKh i0jN9dSNhokM3AqBi6qZl5kmBnRA3UsIaOg3QRrqN8IlBPp+u7i5xsrJIUWvD95o TO06admmLcCJT8n6ZfNVfRjBgzu8+t54UVaDx9YYwxoNGOSFwqOb8CSPTWPxLmDr RKDUOvO8DBlP7uFz9neP+LxluA3DjurRZvb0z0AmCZ8/RXEmTMCyfP5a6esxquXt 0Bqo6hM9q+TeXTHNS1CNvqLSWWikw+AzS/ZPPvriYFn5lxtbq6c= =pdDC -----END PGP SIGNATURE----- Merge tag 'gcc-minimum-version-6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic Pull compiler version requirement update from Arnd Bergmann: "Require gcc-8 and binutils-2.30 x86 already uses gcc-8 as the minimum version, this changes all other architectures to the same version. gcc-8 is used is Debian 10 and Red Hat Enterprise Linux 8, both of which are still supported, and binutils 2.30 is the oldest corresponding version on those. Ubuntu Pro 18.04 and SUSE Linux Enterprise Server 15 both use gcc-7 as the system compiler but additionally include toolchains that remain supported. With the new minimum toolchain versions, a number of workarounds for older versions can be dropped, in particular on x86_64 and arm64. Importantly, the updated compiler version allows removing two of the five remaining gcc plugins, as support for sancov and structeak features is already included in modern compiler versions. I tried collecting the known changes that are possible based on the new toolchain version, but expect that more cleanups will be possible. Since this touches multiple architectures, I merged the patches through the asm-generic tree." * tag 'gcc-minimum-version-6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: Makefile.kcov: apply needed compiler option unconditionally in CFLAGS_KCOV Documentation: update binutils-2.30 version reference gcc-plugins: remove SANCOV gcc plugin Kbuild: remove structleak gcc plugin arm64: drop binutils version checks raid6: skip avx512 checks kbuild: require gcc-8 and binutils-2.30 |
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Linus Torvalds
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785cdec46e |
Core x86 updates for v6.16:
Boot code changes:
- A large series of changes to reorganize the x86 boot code into a better isolated
and easier to maintain base of PIC early startup code in arch/x86/boot/startup/,
by Ard Biesheuvel.
Motivation & background:
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Linus Torvalds
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14418ddcc2 |
This update includes the following changes:
API: - Fix memcpy_sglist to handle partially overlapping SG lists. - Use memcpy_sglist to replace null skcipher. - Rename CRYPTO_TESTS to CRYPTO_BENCHMARK. - Flip CRYPTO_MANAGER_DISABLE_TEST into CRYPTO_SELFTESTS. - Hide CRYPTO_MANAGER. - Add delayed freeing of driver crypto_alg structures. Compression: - Allocate large buffers on first use instead of initialisation in scomp. - Drop destination linearisation buffer in scomp. - Move scomp stream allocation into acomp. - Add acomp scatter-gather walker. - Remove request chaining. - Add optional async request allocation. Hashing: - Remove request chaining. - Add optional async request allocation. - Move partial block handling into API. - Add ahash support to hmac. - Fix shash documentation to disallow usage in hard IRQs. Algorithms: - Remove unnecessary SIMD fallback code on x86 and arm/arm64. - Drop avx10_256 xts(aes)/ctr(aes) on x86. - Improve avx-512 optimisations for xts(aes). - Move chacha arch implementations into lib/crypto. - Move poly1305 into lib/crypto and drop unused Crypto API algorithm. - Disable powerpc/poly1305 as it has no SIMD fallback. - Move sha256 arch implementations into lib/crypto. - Convert deflate to acomp. - Set block size correctly in cbcmac. Drivers: - Do not use sg_dma_len before mapping in sun8i-ss. - Fix warm-reboot failure by making shutdown do more work in qat. - Add locking in zynqmp-sha. - Remove cavium/zip. - Add support for PCI device 0x17D8 to ccp. - Add qat_6xxx support in qat. - Add support for RK3576 in rockchip-rng. - Add support for i.MX8QM in caam. Others: - Fix irq_fpu_usable/kernel_fpu_begin inconsistency during CPU bring-up. - Add new SEV/SNP platform shutdown API in ccp. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEn51F/lCuNhUwmDeSxycdCkmxi6cFAmgz47AACgkQxycdCkmx i6fvKRAAr4Xa903L0r1Q1P1alQqoFFCqimUWeH72m68LiWynHWi0lUo0z/+tKweg mnPStz7/Ha9HRHJjdNCMPnlJqXQDkuH3bIOuBJCwduDuhHo9VGOd46XGzmGMv3gb HKuZhI0lk7pznK3CSyD/2nHmbDCHD+7feTZSBMoN9mm875+aSoM6fdxgak8uPFcq KbB1L+hObTn2kAPSqRrNOR8/xG2N7hdH8eax7Li+LAtqYNVT5HvWVECsB/CKRPfB sgAv3UTzcIFapSSHUHaONppSeoqPAIAeV7SdQhJvlT+EUUR/h/B6+D9OUQQqbphQ LBalgTnqMKl0ymDEQFQ6QyYCat9ZfNmDft2WcXEsxc8PxImkgJI1W3B8O51sOjbG 78D8JqVQ96dleo4FsBhM2wfG0b41JM6zU4raC4vS7a3qsUS+Q1MpehvcS1iORicy SpGdE8e7DLlxKhzWyW1xJnbrtMZDC7Sa2hUnxrvP0/xOvRhChKscRVtWcf0a5q7X 8JmuvwVSOJuSbQ3MeFbQvpo5lR9+0WsNjM6e9miiH6Y7vZUKmWcq2yDp377qVzeh 7NK6+OwGIQZZExrmtPw2BXwssT9Eg+ks6Y7g2Ne7yzvrjVNfEPY7Cws/5w7p8mRS qhrcpbJNFlWgD7YYkmGZFTQ8DCN25ipP8lklO/hbcfchqLE/o1o= =O8L5 -----END PGP SIGNATURE----- Merge tag 'v6.16-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 Pull crypto updates from Herbert Xu: "API: - Fix memcpy_sglist to handle partially overlapping SG lists - Use memcpy_sglist to replace null skcipher - Rename CRYPTO_TESTS to CRYPTO_BENCHMARK - Flip CRYPTO_MANAGER_DISABLE_TEST into CRYPTO_SELFTESTS - Hide CRYPTO_MANAGER - Add delayed freeing of driver crypto_alg structures Compression: - Allocate large buffers on first use instead of initialisation in scomp - Drop destination linearisation buffer in scomp - Move scomp stream allocation into acomp - Add acomp scatter-gather walker - Remove request chaining - Add optional async request allocation Hashing: - Remove request chaining - Add optional async request allocation - Move partial block handling into API - Add ahash support to hmac - Fix shash documentation to disallow usage in hard IRQs Algorithms: - Remove unnecessary SIMD fallback code on x86 and arm/arm64 - Drop avx10_256 xts(aes)/ctr(aes) on x86 - Improve avx-512 optimisations for xts(aes) - Move chacha arch implementations into lib/crypto - Move poly1305 into lib/crypto and drop unused Crypto API algorithm - Disable powerpc/poly1305 as it has no SIMD fallback - Move sha256 arch implementations into lib/crypto - Convert deflate to acomp - Set block size correctly in cbcmac Drivers: - Do not use sg_dma_len before mapping in sun8i-ss - Fix warm-reboot failure by making shutdown do more work in qat - Add locking in zynqmp-sha - Remove cavium/zip - Add support for PCI device 0x17D8 to ccp - Add qat_6xxx support in qat - Add support for RK3576 in rockchip-rng - Add support for i.MX8QM in caam Others: - Fix irq_fpu_usable/kernel_fpu_begin inconsistency during CPU bring-up - Add new SEV/SNP platform shutdown API in ccp" * tag 'v6.16-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (382 commits) x86/fpu: Fix irq_fpu_usable() to return false during CPU onlining crypto: qat - add missing header inclusion crypto: api - Redo lookup on EEXIST Revert "crypto: testmgr - Add hash export format testing" crypto: marvell/cesa - Do not chain submitted requests crypto: powerpc/poly1305 - add depends on BROKEN for now Revert "crypto: powerpc/poly1305 - Add SIMD fallback" crypto: ccp - Add missing tee info reg for teev2 crypto: ccp - Add missing bootloader info reg for pspv5 crypto: sun8i-ce - move fallback ahash_request to the end of the struct crypto: octeontx2 - Use dynamic allocated memory region for lmtst crypto: octeontx2 - Initialize cptlfs device info once crypto: xts - Only add ecb if it is not already there crypto: lrw - Only add ecb if it is not already there crypto: testmgr - Add hash export format testing crypto: testmgr - Use ahash for generic tfm crypto: hmac - Add ahash support crypto: testmgr - Ignore EEXIST on shash allocation crypto: algapi - Add driver template support to crypto_inst_setname crypto: shash - Set reqsize in shash_alg ... |
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Ingo Molnar
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412751aa69 |
Linux 6.15-rc7
-----BEGIN PGP SIGNATURE----- iQFSBAABCgA8FiEEq68RxlopcLEwq+PEeb4+QwBBGIYFAmgqSbkeHHRvcnZhbGRz QGxpbnV4LWZvdW5kYXRpb24ub3JnAAoJEHm+PkMAQRiGr6sH/1ICAvlin1GuxffE ISVNz3xhXQpXG2k8yl9r0umpdCfPQbGrxm30vZyuIDNutY/FuMvkIqfu+Z1NnLg0 GidZW015LtXrp7/puKtTnUD5CPSjdETMXig+Q7c1PrxkkmHwz8sBbbm173AIDbDB t7wwqSEUQh2AIDouGwN+DXB+6bR2FoOXb/k/njmtappIwR3rBc2f1HQJnP095rKO 5AKw1c9DMv5Wq2cEdBOCP48e4CFZEIN1ycW0nvtjpnOmcPOJjLoEothRbntQolqF udtj5UeTGdAJqmjigv7KHmlrmFNe+GqBq4+beHl5MRxhBaT2uGGaM9jCJiSxT3Jx sHyYYr8= =Ddma -----END PGP SIGNATURE----- Merge tag 'v6.15-rc7' into x86/core, to pick up fixes Pick up build fixes from upstream to make this tree more testable. Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Ingo Molnar
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11d8f542d9 |
Merge branch 'x86/alternatives' into x86/core, to merge dependent commits
Prepare to resolve conflicts with an upstream series of fixes that conflict
with pending x86 changes:
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Masahiro Yamada
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ab09da7570 |
um: let 'make clean' properly clean underlying SUBARCH as well
Building the kernel with O= is affected by stale in-tree build artifacts. So, if the source tree is not clean, Kbuild displays the following: $ make ARCH=um O=build defconfig make[1]: Entering directory '/.../linux/build' *** *** The source tree is not clean, please run 'make ARCH=um mrproper' *** in /.../linux *** make[2]: *** [/.../linux/Makefile:673: outputmakefile] Error 1 make[1]: *** [/.../linux/Makefile:248: __sub-make] Error 2 make[1]: Leaving directory '/.../linux/build' make: *** [Makefile:248: __sub-make] Error 2 Usually, running 'make mrproper' is sufficient for cleaning the source tree for out-of-tree builds. However, building UML generates build artifacts not only in arch/um/, but also in the SUBARCH directory (i.e., arch/x86/). If in-tree stale files remain under arch/x86/, Kbuild will reuse them instead of creating new ones under the specified build directory. This commit makes 'make ARCH=um clean' recurse into the SUBARCH directory. Reported-by: Shuah Khan <skhan@linuxfoundation.org> Closes: https://lore.kernel.org/lkml/20250502172459.14175-1-skhan@linuxfoundation.org/ Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Acked-by: Johannes Berg <johannes@sipsolutions.net> Reviewed-by: David Gow <davidgow@google.com> Reviewed-by: Shuah Khan <skhan@linuxfoundation.org> |
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Dmitry V. Levin
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cc6622730b |
syscall.h: introduce syscall_set_nr()
Similar to syscall_set_arguments() that complements syscall_get_arguments(), introduce syscall_set_nr() that complements syscall_get_nr(). syscall_set_nr() is going to be needed along with syscall_set_arguments() on all HAVE_ARCH_TRACEHOOK architectures to implement PTRACE_SET_SYSCALL_INFO API. Link: https://lkml.kernel.org/r/20250303112020.GD24170@strace.io Signed-off-by: Dmitry V. Levin <ldv@strace.io> Tested-by: Charlie Jenkins <charlie@rivosinc.com> Reviewed-by: Charlie Jenkins <charlie@rivosinc.com> Acked-by: Helge Deller <deller@gmx.de> # parisc Reviewed-by: Maciej W. Rozycki <macro@orcam.me.uk> # mips Cc: Alexander Gordeev <agordeev@linux.ibm.com> Cc: Alexey Gladkov (Intel) <legion@kernel.org> Cc: Andreas Larsson <andreas@gaisler.com> Cc: anton ivanov <anton.ivanov@cambridgegreys.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Borislav Betkov <bp@alien8.de> Cc: Brian Cain <bcain@quicinc.com> Cc: Christian Borntraeger <borntraeger@linux.ibm.com> Cc: Christian Zankel <chris@zankel.net> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Davide Berardi <berardi.dav@gmail.com> Cc: David S. Miller <davem@davemloft.net> Cc: Dinh Nguyen <dinguyen@kernel.org> Cc: Eugene Syromiatnikov <esyr@redhat.com> Cc: Eugene Syromyatnikov <evgsyr@gmail.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Guo Ren <guoren@kernel.org> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Johannes Berg <johannes@sipsolutions.net> Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> Cc: Jonas Bonn <jonas@southpole.se> Cc: Madhavan Srinivasan <maddy@linux.ibm.com> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Simek <monstr@monstr.eu> Cc: Mike Frysinger <vapier@gentoo.org> Cc: Naveen N Rao <naveen@kernel.org> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Renzo Davoi <renzo@cs.unibo.it> Cc: Richard Weinberger <richard@nod.at> Cc: Rich Felker <dalias@libc.org> Cc: Russel King <linux@armlinux.org.uk> Cc: Shuah Khan <shuah@kernel.org> Cc: Stafford Horne <shorne@gmail.com> Cc: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi> Cc: Sven Schnelle <svens@linux.ibm.com> Cc: Thomas Gleinxer <tglx@linutronix.de> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Vineet Gupta <vgupta@kernel.org> Cc: WANG Xuerui <kernel@xen0n.name> Cc: Will Deacon <will@kernel.org> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Dmitry V. Levin
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17fc7b8f9b |
syscall.h: add syscall_set_arguments()
This function is going to be needed on all HAVE_ARCH_TRACEHOOK
architectures to implement PTRACE_SET_SYSCALL_INFO API.
This partially reverts commit
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Matthew Wilcox (Oracle)
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669eec68f6 |
um: remove custom definition of mk_pte()
Move the pfn_pte() definitions from the 2level and 4level files to the generic pgtable.h and delete the custom definition of mk_pte() so that we use the central definition. Link: https://lkml.kernel.org/r/20250402181709.2386022-6-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Zi Yan <ziy@nvidia.com> Cc: Richard Weinberger <richard@nod.at> Cc: Anton Ivanov <anton.ivanov@cambridgegreys.com> Cc: Johannes Berg <johannes@sipsolutions.net> Cc: Alexander Gordeev <agordeev@linux.ibm.com> Cc: Andreas Larsson <andreas@gaisler.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: David Hildenbrand <david@redhat.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Muchun Song <muchun.song@linux.dev> Cc: <x86@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Herbert Xu
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20e9579f11 |
um: Include linux/types.h in asm/fpu/api.h
Include linux/types.h before using bool. Reported-by: kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202505070045.vWc04ygs-lkp@intel.com/ Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Acked-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |