linux-kernel - [RFC PATCH 0/6] CPUID and FPU fixes

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Message-Id: <cover.1480985979.git.luto@kernel.org>
Date:   Mon,  5 Dec 2016 17:01:09 -0800
From:   Andy Lutomirski <luto@...nel.org>
To:     x86@...nel.org
Cc:     One Thousand Gnomes <gnomes@...rguk.ukuu.org.uk>,
        Borislav Petkov <bp@...en8.de>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Brian Gerst <brgerst@...il.com>,
        Matthew Whitehead <tedheadster@...il.com>,
        Andy Lutomirski <luto@...nel.org>
Subject: [RFC PATCH 0/6] CPUID and FPU fixes

Our CPUID-less FPU detection code was terminally broken and, as far
as I can tell, it's been broken for a long, long time.  This series
tries to improve the situation.

Thoughts?

Andy Lutomirski (5):
  x86/cpu: Factor out application of forced cpu caps
  x86/cpu: Re-apply forced caps every time cpu caps are re-read
  x86/fpu: Fix "x86/fpu: Legacy x87 FPU detected" message
  x86/fpu: Fix CPUID-less FPU detection
  x86/fpu: Fix the "Giving up, no FPU found" test

Borislav Petkov (1):
  x86/CPU: Add X86_FEATURE_CPUID

 arch/x86/include/asm/cpufeatures.h |  2 +-
 arch/x86/kernel/cpu/common.c       | 35 ++++++++++++++++++++++++-----------
 arch/x86/kernel/fpu/init.c         | 30 +++++++++++++++++-------------
 arch/x86/kernel/fpu/xstate.c       |  7 ++++++-
 4 files changed, 48 insertions(+), 26 deletions(-)

-- 
2.9.3