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

David Woodhouse
2018-01-23T16:52:50Z

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(-)

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2.7.4