linux/arch/arm64/mm
Linus Torvalds df57721f9a Add x86 shadow stack support
Convert IBT selftest to asm to fix objtool warning
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Merge tag 'x86_shstk_for_6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 shadow stack support from Dave Hansen:
 "This is the long awaited x86 shadow stack support, part of Intel's
  Control-flow Enforcement Technology (CET).

  CET consists of two related security features: shadow stacks and
  indirect branch tracking. This series implements just the shadow stack
  part of this feature, and just for userspace.

  The main use case for shadow stack is providing protection against
  return oriented programming attacks. It works by maintaining a
  secondary (shadow) stack using a special memory type that has
  protections against modification. When executing a CALL instruction,
  the processor pushes the return address to both the normal stack and
  to the special permission shadow stack. Upon RET, the processor pops
  the shadow stack copy and compares it to the normal stack copy.

  For more information, refer to the links below for the earlier
  versions of this patch set"

Link: https://lore.kernel.org/lkml/20220130211838.8382-1-rick.p.edgecombe@intel.com/
Link: https://lore.kernel.org/lkml/20230613001108.3040476-1-rick.p.edgecombe@intel.com/

* tag 'x86_shstk_for_6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (47 commits)
  x86/shstk: Change order of __user in type
  x86/ibt: Convert IBT selftest to asm
  x86/shstk: Don't retry vm_munmap() on -EINTR
  x86/kbuild: Fix Documentation/ reference
  x86/shstk: Move arch detail comment out of core mm
  x86/shstk: Add ARCH_SHSTK_STATUS
  x86/shstk: Add ARCH_SHSTK_UNLOCK
  x86: Add PTRACE interface for shadow stack
  selftests/x86: Add shadow stack test
  x86/cpufeatures: Enable CET CR4 bit for shadow stack
  x86/shstk: Wire in shadow stack interface
  x86: Expose thread features in /proc/$PID/status
  x86/shstk: Support WRSS for userspace
  x86/shstk: Introduce map_shadow_stack syscall
  x86/shstk: Check that signal frame is shadow stack mem
  x86/shstk: Check that SSP is aligned on sigreturn
  x86/shstk: Handle signals for shadow stack
  x86/shstk: Introduce routines modifying shstk
  x86/shstk: Handle thread shadow stack
  x86/shstk: Add user-mode shadow stack support
  ...
2023-08-31 12:20:12 -07:00
..
cache.S efi: arm64: enter with MMU and caches enabled 2023-01-24 11:51:08 +00:00
context.c arm64/mm: remove now-superfluous ISBs from TTBR writes 2023-06-15 17:47:54 +01:00
copypage.c arm64: Also reset KASAN tag if page is not PG_mte_tagged 2023-05-16 14:58:54 +01:00
dma-mapping.c Revert "Revert "arm64: dma: Drop cache invalidation from arch_dma_prep_coherent()"" 2023-03-30 16:23:03 +01:00
extable.c arm64: extable: cleanup redundant extable type EX_TYPE_FIXUP 2022-06-28 12:11:47 +01:00
fault.c mm: drop per-VMA lock when returning VM_FAULT_RETRY or VM_FAULT_COMPLETED 2023-08-24 16:20:17 -07:00
fixmap.c arm64: mm: always map fixmap at page granularity 2023-04-11 18:55:28 +01:00
flush.c arm64: implement the new page table range API 2023-08-24 16:20:20 -07:00
hugetlbpage.c arm64: mm: use ptep_clear() instead of pte_clear() in clear_flush() 2023-08-24 16:20:27 -07:00
init.c dma-maping updates for Linux 6.6 2023-08-29 20:32:10 -07:00
ioremap.c arm64 : mm: add wrapper function ioremap_prot() 2023-08-18 10:12:36 -07:00
kasan_init.c arm64: kasan: remove !KASAN_VMALLOC remnants 2023-06-06 17:39:05 +01:00
Makefile arm64: mm: move fixmap code to its own file 2023-04-11 18:55:28 +01:00
mmap.c arm64/mm: move protection_map[] inside the platform 2022-07-17 17:14:37 -07:00
mmu.c arm64: convert various functions to use ptdescs 2023-08-21 13:37:55 -07:00
mteswap.c mm/swap: stop using page->private on tail pages for THP_SWAP 2023-08-24 16:20:28 -07:00
pageattr.c mm,kfence: decouple kfence from page granularity mapping judgement 2023-03-27 16:15:20 +01:00
pgd.c mm: consolidate pgtable_cache_init() and pgd_cache_init() 2019-09-24 15:54:09 -07:00
physaddr.c arm64: Do not pass tagged addresses to __is_lm_address() 2021-02-02 17:44:47 +00:00
proc.S arm64/mm: Replace an open coding with ID_AA64MMFR1_EL1_HAFDBS_MASK 2023-07-27 11:01:46 +01:00
ptdump_debugfs.c arm64: Add __init section marker to some functions 2021-04-08 17:45:10 +01:00
ptdump.c arm64: add FIXADDR_TOT_{START,SIZE} 2023-04-11 18:55:28 +01:00
trans_pgd-asm.S arm64: kexec: configure EL2 vectors for kexec 2021-10-01 13:31:00 +01:00
trans_pgd.c Add x86 shadow stack support 2023-08-31 12:20:12 -07:00