linux-kernel - [GIT PULL] x86/urgent for v6.5-rc4

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Message-ID: <20230730093049.GBZMYtycNKuAuP1+wB@fat_crate.local>
Date:   Sun, 30 Jul 2023 11:30:49 +0200
From:   Borislav Petkov <bp@...en8.de>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     x86-ml <x86@...nel.org>, lkml <linux-kernel@...r.kernel.org>
Subject: [GIT PULL] x86/urgent for v6.5-rc4

Hi Linus,

please pull a couple of urgent x86 fixes for 6.5.

Thx.

---

The following changes since commit fdf0eaf11452d72945af31804e2a1048ee1b574c:

  Linux 6.5-rc2 (2023-07-16 15:10:37 -0700)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git tags/x86_urgent_for_v6.5_rc4

for you to fetch changes up to fd470a8beed88440b160d690344fbae05a0b9b1b:

  x86/cpu: Enable STIBP on AMD if Automatic IBRS is enabled (2023-07-22 18:04:22 +0200)

----------------------------------------------------------------
- AMD's automatic IBRS doesn't enable cross-thread branch target
  injection protection (STIBP) for user processes. Enable STIBP on such
  systems.

- Do not delete (but put the ref instead) of AMD MCE error thresholding
  sysfs kobjects when destroying them in order not to delete the kernfs
  pointer prematurely

- Restore annotation in ret_from_fork_asm() in order to fix kthread
  stack unwinding from being marked as unreliable and thus breaking
  livepatching

----------------------------------------------------------------
Kim Phillips (1):
      x86/cpu: Enable STIBP on AMD if Automatic IBRS is enabled

Peter Zijlstra (1):
      x86: Fix kthread unwind

Yazen Ghannam (1):
      x86/MCE/AMD: Decrement threshold_bank refcount when removing threshold blocks

 Documentation/admin-guide/hw-vuln/spectre.rst | 11 +++++++----
 arch/x86/entry/entry_64.S                     | 16 +++++++++++++++-
 arch/x86/kernel/cpu/bugs.c                    | 15 +++++++++------
 arch/x86/kernel/cpu/mce/amd.c                 |  4 ++--
 4 files changed, 33 insertions(+), 13 deletions(-)

-- 
Regards/Gruss,
    Boris.

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