From: tip-bot for David Woodhouse <tipbot@zytor.com>
To: linux-tip-commits@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, gregkh@linuxfoundation.org,
mingo@kernel.org, tglx@linutronix.de, hpa@zytor.com, bp@suse.de,
dwmw@amazon.co.uk
Subject: [tip:x86/pti] x86/cpufeatures: Add Intel feature bits for Speculation Control
Date: Fri, 26 Jan 2018 07:00:04 -0800 [thread overview]
Message-ID: <tip-fc67dd70adb711a45d2ef34e12d1a8be75edde61@git.kernel.org> (raw)
In-Reply-To: <1516896855-7642-3-git-send-email-dwmw@amazon.co.uk>
Commit-ID: fc67dd70adb711a45d2ef34e12d1a8be75edde61
Gitweb: https://git.kernel.org/tip/fc67dd70adb711a45d2ef34e12d1a8be75edde61
Author: David Woodhouse <dwmw@amazon.co.uk>
AuthorDate: Thu, 25 Jan 2018 16:14:10 +0000
Committer: Thomas Gleixner <tglx@linutronix.de>
CommitDate: Fri, 26 Jan 2018 15:53:16 +0100
x86/cpufeatures: Add Intel feature bits for Speculation Control
Add three feature bits exposed by new microcode on Intel CPUs for
speculation control.
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Borislav Petkov <bp@suse.de>
Cc: gnomes@lxorguk.ukuu.org.uk
Cc: ak@linux.intel.com
Cc: ashok.raj@intel.com
Cc: dave.hansen@intel.com
Cc: karahmed@amazon.de
Cc: arjan@linux.intel.com
Cc: torvalds@linux-foundation.org
Cc: peterz@infradead.org
Cc: bp@alien8.de
Cc: pbonzini@redhat.com
Cc: tim.c.chen@linux.intel.com
Cc: gregkh@linux-foundation.org
Link: https://lkml.kernel.org/r/1516896855-7642-3-git-send-email-dwmw@amazon.co.uk
---
arch/x86/include/asm/cpufeatures.h | 3 +++
1 file changed, 3 insertions(+)
diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpufeatures.h
index 7b25cf3..0a51070 100644
--- a/arch/x86/include/asm/cpufeatures.h
+++ b/arch/x86/include/asm/cpufeatures.h
@@ -320,6 +320,9 @@
/* Intel-defined CPU features, CPUID level 0x00000007:0 (EDX), word 18 */
#define X86_FEATURE_AVX512_4VNNIW (18*32+ 2) /* AVX-512 Neural Network Instructions */
#define X86_FEATURE_AVX512_4FMAPS (18*32+ 3) /* AVX-512 Multiply Accumulation Single precision */
+#define X86_FEATURE_SPEC_CTRL (18*32+26) /* Speculation Control (IBRS + IBPB) */
+#define X86_FEATURE_STIBP (18*32+27) /* Single Thread Indirect Branch Predictors */
+#define X86_FEATURE_ARCH_CAPABILITIES (18*32+29) /* IA32_ARCH_CAPABILITIES MSR (Intel) */
/*
* BUG word(s)
next prev parent reply other threads:[~2018-01-26 15:00 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-25 16:14 [PATCH v5 0/7] Basic Speculation Control feature support David Woodhouse
2018-01-25 16:14 ` [PATCH v5 1/7] x86/cpufeatures: Add CPUID_7_EDX CPUID leaf David Woodhouse
2018-01-26 14:59 ` [tip:x86/pti] " tip-bot for David Woodhouse
2018-01-25 16:14 ` [PATCH v5 2/7] x86/cpufeatures: Add Intel feature bits for Speculation Control David Woodhouse
2018-01-26 15:00 ` tip-bot for David Woodhouse [this message]
2018-01-25 16:14 ` [PATCH v5 3/7] x86/cpufeatures: Add AMD " David Woodhouse
2018-01-25 21:30 ` Borislav Petkov
2018-01-25 21:37 ` Thomas Gleixner
2018-01-25 21:41 ` Borislav Petkov
2018-01-26 15:00 ` [tip:x86/pti] " tip-bot for David Woodhouse
2018-01-26 18:41 ` [PATCH] x86/cpufeatures: Cleanup AMD speculation feature bits Borislav Petkov
2018-01-26 18:45 ` David Woodhouse
2018-01-26 18:49 ` Borislav Petkov
2018-01-26 21:06 ` Tom Lendacky
2018-01-26 21:52 ` Borislav Petkov
2018-01-26 21:59 ` David Woodhouse
2018-01-26 22:10 ` Borislav Petkov
2018-01-26 23:14 ` Tom Lendacky
2018-01-27 8:49 ` David Woodhouse
2018-01-27 9:27 ` David Woodhouse
2018-01-27 9:37 ` Borislav Petkov
2018-01-27 10:32 ` David Woodhouse
2018-01-27 13:18 ` Borislav Petkov
2018-01-25 16:14 ` [PATCH v5 4/7] x86/msr: Add definitions for new speculation control MSRs David Woodhouse
2018-01-26 15:00 ` [tip:x86/pti] " tip-bot for David Woodhouse
2018-01-25 16:14 ` [PATCH v5 5/7] x86/pti: Do not enable PTI on processors which are not vulnerable to Meltdown David Woodhouse
2018-01-25 18:10 ` Dave Hansen
2018-01-25 19:53 ` Dave Hansen
2018-01-25 22:00 ` Borislav Petkov
2018-01-26 15:01 ` [tip:x86/pti] x86/pti: Do not enable PTI on CPUs " tip-bot for David Woodhouse
2018-01-25 16:14 ` [PATCH v5 6/7] x86/cpufeature: Blacklist SPEC_CTRL/PRED_CMD on early Spectre v2 microcodes David Woodhouse
2018-01-26 15:01 ` [tip:x86/pti] " tip-bot for David Woodhouse
2018-01-25 16:14 ` [PATCH v5 7/7] x86/speculation: Add basic IBPB (Indirect Branch Prediction Barrier) support David Woodhouse
2018-01-26 15:02 ` [tip:x86/pti] " tip-bot for David Woodhouse
2018-01-26 16:18 ` David Woodhouse
2018-01-26 21:36 ` [PATCH v5 7/7] " Tim Chen
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