From: David Woodhouse <dwmw@amazon.co.uk>
To: arjan@linux.intel.com, tglx@linutronix.de, karahmed@amazon.de,
x86@kernel.org, linux-kernel@vger.kernel.org,
tim.c.chen@linux.intel.com, bp@alien8.de, peterz@infradead.org,
pbonzini@redhat.com, ak@linux.intel.com,
torvalds@linux-foundation.org, gregkh@linux-foundation.org,
thomas.lendacky@amd.com
Subject: [PATCH v2 0/5] Basic Speculation Control feature support
Date: Tue, 23 Jan 2018 16:52:50 +0000 [thread overview]
Message-ID: <1516726375-25168-1-git-send-email-dwmw@amazon.co.uk> (raw)
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
next reply other threads:[~2018-01-23 16:52 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-23 16:52 David Woodhouse [this message]
2018-01-23 16:52 ` [PATCH v2 1/5] x86/cpufeatures: Add CPUID_7_EDX CPUID leaf David Woodhouse
2018-01-23 16:52 ` [PATCH v2 2/5] x86/cpufeatures: Add Intel feature bits for Speculation Control David Woodhouse
2018-01-23 18:43 ` Dave Hansen
2018-01-24 1:23 ` Woodhouse, David
2018-01-24 1:28 ` Dave Hansen
2018-01-24 8:13 ` Woodhouse, David
2018-01-23 16:52 ` [PATCH v2 3/5] x86/cpufeatures: Add AMD " David Woodhouse
2018-01-24 8:39 ` Kirill A. Shutemov
2018-01-24 8:40 ` David Woodhouse
2018-01-23 16:52 ` [PATCH v2 4/5] x86/msr: Add definitions for new speculation control MSRs David Woodhouse
2018-01-23 18:27 ` Dave Hansen
2018-01-23 18:31 ` Greg KH
2018-01-23 18:48 ` Woodhouse, David
2018-01-23 16:52 ` [PATCH v2 5/5] x86/pti: Do not enable PTI on fixed Intel processors David Woodhouse
2018-01-23 18:12 ` Andi Kleen
2018-01-24 1:21 ` David Woodhouse
2018-01-23 18:40 ` Dave Hansen
2018-01-24 1:27 ` David Woodhouse
2018-01-23 18:41 ` Dave Hansen
2018-01-23 18:44 ` Woodhouse, David
2018-01-23 18:45 ` Alan Cox
2018-01-23 19:02 ` Andrew Cooper
2018-01-23 20:45 ` Alan Cox
2018-01-23 20:38 ` Linus Torvalds
2018-01-23 20:50 ` David Woodhouse
2018-01-24 16:25 ` David Woodhouse
2018-01-24 17:07 ` Alan Cox
2018-01-24 17:42 ` David Woodhouse
2018-01-24 18:40 ` Alan Cox
2018-01-24 18:59 ` David Woodhouse
2018-01-24 19:37 ` David Woodhouse
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