linux-kernel - [PATCH v2 0/5] Basic Speculation Control feature support

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Date:   Tue, 23 Jan 2018 16:52:50 +0000
From:   David Woodhouse <dwmw@...zon.co.uk>
To:     arjan@...ux.intel.com, tglx@...utronix.de, karahmed@...zon.de,
        x86@...nel.org, linux-kernel@...r.kernel.org,
        tim.c.chen@...ux.intel.com, bp@...en8.de, peterz@...radead.org,
        pbonzini@...hat.com, ak@...ux.intel.com,
        torvalds@...ux-foundation.org, gregkh@...ux-foundation.org,
        thomas.lendacky@....com
Subject: [PATCH v2 0/5] Basic Speculation Control feature support

Baby steps... this is just the basic CPUID and MSR definitions for AMD 
and Intel, followedby the complete no-brainer: Disable KPTI on Intel 
CPUs which set the RDCL_NO bit to say that they don't need it.

David Woodhouse (5):
  x86/cpufeatures: Add CPUID_7_EDX CPUID leaf
  x86/cpufeatures: Add Intel feature bits for Speculation Control
  x86/cpufeatures: Add AMD feature bits for Speculation Control
  x86/msr: Add definitions for new speculation control MSRs
  x86/pti: Do not enable PTI on fixed Intel processors

 arch/x86/include/asm/cpufeature.h        |  7 +++++--
 arch/x86/include/asm/cpufeatures.h       | 14 +++++++++++---
 arch/x86/include/asm/disabled-features.h |  3 ++-
 arch/x86/include/asm/msr-index.h         | 12 ++++++++++++
 arch/x86/include/asm/required-features.h |  3 ++-
 arch/x86/kernel/cpu/common.c             | 11 +++++++++--
 arch/x86/kernel/cpu/scattered.c          |  2 --
 7 files changed, 41 insertions(+), 11 deletions(-)

-- 
2.7.4