linux-kernel - [ 157/180] x86, cpu: Add CPU flags for F16C and RDRND

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Message-Id: <20121001225204.265045183@1wt.eu>
Date:	Tue, 02 Oct 2012 00:54:34 +0200
From:	Willy Tarreau <w@....eu>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	"H. Peter Anvin" <hpa@...or.com>,
	Paul Gortmaker <paul.gortmaker@...driver.com>,
	Willy Tarreau <w@....eu>
Subject: [ 157/180] x86, cpu: Add CPU flags for F16C and RDRND

2.6.32-longterm review patch.  If anyone has any objections, please let me know.

------------------

From: H. Peter Anvin <hpa@...or.com>

commit 24da9c26f3050aee9314ec09930a24c80fe76352 upstream.

Add support for the newly documented F16C (16-bit floating point
conversions) and RDRND (RDRAND instruction) CPU feature flags.

Signed-off-by: H. Peter Anvin <hpa@...or.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@...driver.com>
Signed-off-by: Willy Tarreau <w@....eu>
---
 arch/x86/include/asm/cpufeature.h |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h
index 1efb1fa..84d5337 100644
--- a/arch/x86/include/asm/cpufeature.h
+++ b/arch/x86/include/asm/cpufeature.h
@@ -124,6 +124,8 @@
 #define X86_FEATURE_XSAVE	(4*32+26) /* XSAVE/XRSTOR/XSETBV/XGETBV */
 #define X86_FEATURE_OSXSAVE	(4*32+27) /* "" XSAVE enabled in the OS */
 #define X86_FEATURE_AVX		(4*32+28) /* Advanced Vector Extensions */
+#define X86_FEATURE_F16C	(4*32+29) /* 16-bit fp conversions */
+#define X86_FEATURE_RDRND	(4*32+30) /* The RDRAND instruction */
 #define X86_FEATURE_HYPERVISOR	(4*32+31) /* Running on a hypervisor */
 
 /* VIA/Cyrix/Centaur-defined CPU features, CPUID level 0xC0000001, word 5 */
-- 
1.7.2.1.45.g54fbc



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