linux/arch/x86/mm
Thomas Gleixner c48b5a4cf3 x86/mm: Fix PTI for i386 some more
So it turns out that we have to do two passes of
pti_clone_entry_text(), once before initcalls, such that device and
late initcalls can use user-mode-helper / modprobe and once after
free_initmem() / mark_readonly().

Now obviously mark_readonly() can cause PMD splits, and
pti_clone_pgtable() doesn't like that much.

Allow the late clone to split PMDs so that pagetables stay in sync.

[peterz: Changelog and comments]
Reported-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lkml.kernel.org/r/20240806184843.GX37996@noisy.programming.kicks-ass.net
2024-08-07 15:35:01 +02:00
..
pat - 875fa64577da ("mm/hugetlb_vmemmap: fix race with speculative PFN 2024-07-21 17:15:46 -07:00
Makefile kbuild: use $(src) instead of $(srctree)/$(src) for source directory 2024-05-10 04:34:52 +09:00
amdtopology.c x86/mm/numa: Move early mptable evaluation into common code 2024-02-15 22:07:41 +01:00
cpu_entry_area.c x86/mm: Do not shuffle CPU entry areas without KASLR 2023-03-22 10:42:47 -07:00
debug_pagetables.c x86/bugs: Rename CONFIG_PAGE_TABLE_ISOLATION => CONFIG_MITIGATION_PAGE_TABLE_ISOLATION 2024-01-10 10:52:28 +01:00
dump_pagetables.c - Sumanth Korikkar has taught s390 to allocate hotplug-time page frames 2024-03-14 17:43:30 -07:00
extable.c x86/extable: Remove unused fixup type EX_TYPE_COPY 2024-04-04 17:01:40 +02:00
fault.c The usual shower of singleton fixes and minor series all over MM, 2024-05-19 09:21:03 -07:00
highmem_32.c x86/mm: Include asm/numa.h for set_highmem_pages_init() 2023-05-18 11:56:18 -07:00
hugetlbpage.c treewide: use initializer for struct vm_unmapped_area_info 2024-04-25 20:56:27 -07:00
ident_map.c x86/mm: Introduce kernel_ident_mapping_free() 2024-06-17 17:46:22 +02:00
init.c The usual shower of singleton fixes and minor series all over MM, 2024-05-19 09:21:03 -07:00
init_32.c mm/treewide: replace pmd_large() with pmd_leaf() 2024-03-06 13:04:19 -08:00
init_64.c - 875fa64577da ("mm/hugetlb_vmemmap: fix race with speculative PFN 2024-07-21 17:15:46 -07:00
iomap_32.c
ioremap.c x86/ioremap: Add hypervisor callback for private MMIO mapping in coco VM 2023-03-26 23:42:40 +02:00
kasan_init_64.c mm/treewide: replace pud_large() with pud_leaf() 2024-03-06 13:04:19 -08:00
kaslr.c x86/mm: Avoid using set_pgd() outside of real PGD pages 2023-06-16 11:46:42 -07:00
kmmio.c x86/mm/kmmio: Remove redundant preempt_disable() 2022-12-12 10:54:48 -05:00
kmsan_shadow.c x86: kmsan: handle CPU entry area 2022-10-03 14:03:26 -07:00
maccess.c x86/mm: Disallow vsyscall page read for copy_from_kernel_nofault() 2024-02-15 19:21:39 -08:00
mem_encrypt.c x86/sev: Add callback to apply RMP table fixups for kexec 2024-04-29 11:21:09 +02:00
mem_encrypt_amd.c - Add support for running the kernel in a SEV-SNP guest, over a Secure 2024-07-16 11:12:25 -07:00
mem_encrypt_boot.S x86/mm: Remove P*D_PAGE_MASK and P*D_PAGE_SIZE macros 2022-12-15 10:37:27 -08:00
mem_encrypt_identity.c - Sumanth Korikkar has taught s390 to allocate hotplug-time page frames 2024-03-14 17:43:30 -07:00
mm_internal.h
mmap.c mm: switch mm->get_unmapped_area() to a flag 2024-04-25 20:56:25 -07:00
mmio-mod.c x86: Replace cpumask_weight() with cpumask_empty() where appropriate 2022-04-10 22:35:38 +02:00
numa.c x86/mm/numa: Use NUMA_NO_NODE when calling memblock_set_node() 2024-06-06 22:20:39 +03:00
numa_32.c fix missing vmalloc.h includes 2024-04-25 20:55:49 -07:00
numa_64.c
numa_emulation.c x86/mm: Replace nodes_weight() with nodes_empty() where appropriate 2022-04-10 22:35:38 +02:00
numa_internal.h
pf_in.c
pf_in.h
pgprot.c x86/mm: move protection_map[] inside the platform 2022-07-17 17:14:38 -07:00
pgtable.c minmax: add a few more MIN_T/MAX_T users 2024-07-28 13:41:14 -07:00
pgtable_32.c
physaddr.c
physaddr.h
pkeys.c x86/pkeys: Clarify PKRU_AD_KEY macro 2022-06-07 16:06:33 -07:00
pti.c x86/mm: Fix PTI for i386 some more 2024-08-07 15:35:01 +02:00
srat.c x86/apic: Wrap APIC ID validation into an inline 2023-08-09 11:58:30 -07:00
testmmiotrace.c
tlb.c - Sumanth Korikkar has taught s390 to allocate hotplug-time page frames 2024-03-14 17:43:30 -07:00