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Date:   Sun, 10 Oct 2021 10:56:06 +0200
From:   Borislav Petkov <>
To:     Linus Torvalds <>
Cc:     x86-ml <>, lkml <>
Subject: [GIT PULL] x86/urgent for v5.15-rc5

Hi Linus,

the last two weeks gathered in several x86/urgent fixes, please pull
them in.



The following changes since commit 5816b3e6577eaa676ceb00a848f0fd65fe2adc29:

  Linux 5.15-rc3 (2021-09-26 14:08:19 -0700)

are available in the Git repository at:

  git:// tags/x86_urgent_for_v5.15_rc5

for you to fetch changes up to d298b03506d3e161f7492c440babb0bfae35e650:

  x86/fpu: Restore the masking out of reserved MXCSR bits (2021-10-08 11:12:17 +0200)

- A FPU fix to properly handle invalid MXCSR values: 32-bit masks them
out due to histerical reasons and 64-bit kernels reject them

- A fix to clear X86_FEATURE_SMAP when support for is not config-enabled

- Three fixes correcting misspelled Kconfig symbols used in code

- Two resctrl object cleanup fixes

- Yet another attempt at fixing the neverending saga of botched x86
timers, this time because some incredibly smart hardware decides to turn
off the HPET timer in a low power state - who cares if the OS is relying
on it...

- Check the full return value range of an SEV VMGEXIT call to determine
whether it returned an error

Borislav Petkov (1):
      x86/fpu: Restore the masking out of reserved MXCSR bits

James Morse (2):
      x86/resctrl: Free the ctrlval arrays when domain_setup_mon_state() fails
      x86/resctrl: Fix kfree() of the wrong type in domain_add_cpu()

Lukas Bulwahn (3):
      x86/entry: Correct reference to intended CONFIG_64_BIT
      x86/platform/olpc: Correct ifdef symbol to intended CONFIG_OLPC_XO15_SCI
      x86/Kconfig: Correct reference to MWINCHIP3D

Thomas Gleixner (1):
      x86/hpet: Use another crystalball to evaluate HPET usability

Tom Lendacky (1):
      x86/sev: Return an error on a returned non-zero SW_EXITINFO1[31:0]

Vegard Nossum (1):
      x86/entry: Clear X86_FEATURE_SMAP when CONFIG_X86_SMAP=n

 arch/x86/Kconfig                    |  2 +-
 arch/x86/include/asm/entry-common.h |  2 +-
 arch/x86/kernel/cpu/common.c        |  1 +
 arch/x86/kernel/cpu/resctrl/core.c  |  6 ++-
 arch/x86/kernel/early-quirks.c      |  6 ---
 arch/x86/kernel/fpu/signal.c        | 11 +++--
 arch/x86/kernel/hpet.c              | 81 +++++++++++++++++++++++++++++++++++++
 arch/x86/kernel/sev-shared.c        |  2 +
 arch/x86/platform/olpc/olpc.c       |  2 +-
 9 files changed, 99 insertions(+), 14 deletions(-)


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