linux-kernel - [PATCH 0/5] x86/asm: Remove some static_cpu

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Date:   Sat, 30 Mar 2019 12:20:17 +0100
From:   Borislav Petkov <bp@...en8.de>
To:     LKML <linux-kernel@...r.kernel.org>
Cc:     Nadav Amit <nadav.amit@...il.com>,
        Andy Lutomirski <luto@...capital.net>,
        Peter Zijlstra <peterz@...radead.org>
Subject: [PATCH 0/5] x86/asm: Remove some static_cpu_has() usage

From: Borislav Petkov <bp@...e.de>

Hi,

this came about after Nadav asked about static_cpu_has() and when it
should be used. The resulting converts a bunch of slow-paths to use
the plain boot_cpu_has() tester which is straight-forward and doesn't
require to be patched in by alternatives, leaving static_cpu_has() only
to the fast paths, where it should be used anyway.

Thx.

Borislav Petkov (5):
  x86/asm: Clarify static_cpu_has()'s intended use
  x86: Convert some slow-path static_cpu_has() callers to boot_cpu_has()
  x86/kvm: Convert some slow-path static_cpu_has() callers to
    boot_cpu_has()
  x86/mm: Convert some slow-path static_cpu_has() callers to
    boot_cpu_has()
  drivers/cpufreq: Convert some slow-path static_cpu_has() callers to
    boot_cpu_has()

 arch/x86/include/asm/cpufeature.h      |  9 ++++++---
 arch/x86/include/asm/fpu/internal.h    |  7 +++----
 arch/x86/kernel/apic/apic_numachip.c   |  2 +-
 arch/x86/kernel/cpu/aperfmperf.c       |  6 +++---
 arch/x86/kernel/cpu/common.c           |  2 +-
 arch/x86/kernel/cpu/mce/inject.c       |  2 +-
 arch/x86/kernel/cpu/proc.c             | 10 +++++-----
 arch/x86/kernel/ldt.c                  | 14 +++++++-------
 arch/x86/kernel/paravirt.c             |  2 +-
 arch/x86/kernel/process.c              |  4 ++--
 arch/x86/kernel/reboot.c               |  2 +-
 arch/x86/kernel/vm86_32.c              |  2 +-
 arch/x86/kvm/svm.c                     | 10 +++++-----
 arch/x86/kvm/vmx/vmx.c                 |  4 ++--
 arch/x86/mm/dump_pagetables.c          |  4 ++--
 arch/x86/mm/pgtable.c                  |  4 ++--
 arch/x86/mm/pti.c                      |  2 +-
 drivers/cpufreq/amd_freq_sensitivity.c |  2 +-
 drivers/cpufreq/intel_pstate.c         | 18 +++++++++---------
 drivers/cpufreq/powernow-k8.c          |  2 +-
 20 files changed, 55 insertions(+), 53 deletions(-)

-- 
2.21.0