linux-kernel - [GIT PULL] x86/cpu changes for v5.5

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Date:   Mon, 25 Nov 2019 14:38:26 +0100
From:   Ingo Molnar <mingo@...nel.org>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     linux-kernel@...r.kernel.org, Borislav Petkov <bp@...en8.de>,
        Thomas Gleixner <tglx@...utronix.de>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>,
        Andrew Morton <akpm@...ux-foundation.org>
Subject: [GIT PULL] x86/cpu changes for v5.5

Linus,

Please pull the latest x86-cpu-for-linus git tree from:

   git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86-cpu-for-linus

   # HEAD: db8c33f8b5bea59d00ca12dcd6b65d01b1ea98ef x86/cpu: Align the x86_capability array to size of unsigned long

Misc changes:

 - math-emu fixes,

 - CPUID updates,

 - sanity-check RDRAND output to see whether the CPU at least
   pretends to produce random data,

 - various unaligned-access across cachelines fixes in preparation of 
   hardware level split-lock detection,

 - Fix MAXSMP constraints to not allow !CPUMASK_OFFSTACK kernels with 
   larger than 512 NR_CPUS.


 Thanks,

	Ingo

------------------>
Arnd Bergmann (2):
      x86/math-emu: Check __copy_from_user() result
      x86/math-emu: Limit MATH_EMULATION to 486SX compatibles

Babu Moger (3):
      x86/cpufeatures: Add feature bit RDPRU on AMD
      x86/Kconfig: Rename UMIP config parameter
      x86/umip: Make the comments vendor-agnostic

Borislav Petkov (1):
      x86/rdrand: Sanity-check RDRAND output

Fenghua Yu (2):
      x86/cpu: Align cpu_caps_cleared and cpu_caps_set to unsigned long
      x86/cpu: Align the x86_capability array to size of unsigned long

Scott Wood (1):
      x86/Kconfig: Enforce limit of 512 CPUs with MAXSMP and no CPUMASK_OFFSTACK


 arch/x86/Kconfig                               | 22 +++++++++++-----------
 arch/x86/Kconfig.cpu                           | 25 ++++++++++++++++---------
 arch/x86/Makefile_32.cpu                       |  1 +
 arch/x86/include/asm/cpufeatures.h             |  1 +
 arch/x86/include/asm/disabled-features.h       |  2 +-
 arch/x86/include/asm/module.h                  |  2 ++
 arch/x86/include/asm/processor.h               | 10 +++++++++-
 arch/x86/include/asm/umip.h                    |  4 ++--
 arch/x86/kernel/Makefile                       |  2 +-
 arch/x86/kernel/cpu/common.c                   |  5 +++--
 arch/x86/kernel/cpu/rdrand.c                   | 22 +++++++++++++++++++++-
 arch/x86/kernel/umip.c                         | 12 ++++++------
 arch/x86/math-emu/fpu_system.h                 |  6 ++++--
 arch/x86/math-emu/reg_ld_str.c                 |  6 +++---
 tools/arch/x86/include/asm/disabled-features.h |  2 +-
 15 files changed, 82 insertions(+), 40 deletions(-)