Kernel/linux
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2025-01-04 04:04:19 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity
ade8ff3b6a
linux/arch
History
Linus Torvalds ade8ff3b6a - AMD Zen CPUs before gen 4 do not flush the RAS (Return Address Stack) 
as part of IBPB. Make sure that happens by doing the flushing in
   software on those generations
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmcI+6UACgkQEsHwGGHe
 VUrYVw/+JmJHckfzI1jqc+FIGkG124X5l5ml3nUwExyL5anZk3KY6QEhvEjk8xgt
 5pLYaHd76W21DWsP5AOXwsLAOBptsN8E7zwmG4Wg4H9EOkcQYDujlm0a8ne+zmqk
 NQh/y7NzACruYJoDzo0S89Gcz2IUZ3C5HTKp9GUor4cUOw1wZsEm5RHAkl+SlK9j
 amGq4ABO6xE6UjnrZMDW1uo253nCTZjH9DZvwzzLXULaAQjTvn6lowSPCJWZezNh
 ue2Tdl/GYo6qbHyd7OYK4N4IxWNJujHLlcIXJ/mU3EPVKBh98f3SZakvoXMuWkBL
 KS5xxHf86Un+8UM59ZYIK8263O8CmlgmOosk+wPV2DZfnomG/dxoYvaZ7x41X2I+
 xdGMiHBP3SaQmqIxdvVCbtBIoLLd5MQ/JtAcDuLM4pbXBgLTxSfF7fDb4OtpuCwe
 QybeQ33QNCAn63DT+3bbWKxQpzC9vpu2+t48XV9a/rgQpsnMBodFP6RSxXxBsH4I
 zRDMoeyfn1mTiGRbbuhwNq52M01L1G8bkJ5sX0m/PB5XGhkg46998i93W8yAKKHY
 5sF1sP53idK94CNcA0fs/Z8ZoKmkszoh8GDAn3Pb+eP+m9f7EDL9AVanBzerJhfJ
 i69EfM9r0ESIkmmmjaycn2EVzwQ5Vtv1r/LgDI4up2bQzbPS6So=
 =ovJa
 -----END PGP SIGNATURE-----

Merge tag 'x86_bugs_post_ibpb' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 IBPB fixes from Borislav Petkov:
 "This fixes the IBPB implementation of older AMDs (< gen4) that do not
  flush the RSB (Return Address Stack) so you can still do some leaking
  when using a "=ibpb" mitigation for Retbleed or SRSO. Fix it by doing
  the flushing in software on those generations.

  IBPB is not the default setting so this is not likely to affect
  anybody in practice"

* tag 'x86_bugs_post_ibpb' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/bugs: Do not use UNTRAIN_RET with IBPB on entry
  x86/bugs: Skip RSB fill at VMEXIT
  x86/entry: Have entry_ibpb() invalidate return predictions
  x86/cpufeatures: Add a IBPB_NO_RET BUG flag
  x86/cpufeatures: Define X86_FEATURE_AMD_IBPB_RET
2024-10-17 19:12:38 -07:00
..
alpha move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
arc move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
arm This pull request contains Broadcom ARM-based SoCs Device Tree fixes for 2024-10-11 10:03:30 +00:00
arm64 arm64 fixes for -rc4 2024-10-17 09:51:03 -07:00
csky mm: make arch_get_unmapped_area() take vm_flags by default 2024-09-09 16:39:13 -07:00
hexagon hexagon: vdso: Fix build failure 2024-09-23 08:17:50 -07:00
loongarch move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
m68k m68knommu: updates and fixes for v6.12 2024-09-24 10:48:44 -07:00
microblaze move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
mips move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
nios2 move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
openrisc openrisc: convert to generic syscall table 2024-07-10 14:23:38 +02:00
parisc move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
powerpc powerpc/8xx: Fix kernel DTLB miss on dcbz 2024-10-11 15:53:06 +11:00
riscv riscv: Fix kernel stack size when KASAN is enabled 2024-10-01 13:08:11 -07:00
s390 fs/proc/kcore.c: allow translation of physical memory addresses 2024-10-09 12:47:19 -07:00
sh move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
sparc move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
um move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
x86 - AMD Zen CPUs before gen 4 do not flush the RAS (Return Address Stack) 2024-10-17 19:12:38 -07:00
xtensa move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
.gitignore
Kconfig cfi: encode cfi normalized integers + kasan/gcov bug in Kconfig 2024-09-26 21:27:27 +02:00