linux-kernel - [ 158/180] x86, cpufeature: Update CPU feature RDRND to RDRAND

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Message-Id: <20121001225204.307905242@1wt.eu>
Date:	Tue, 02 Oct 2012 00:54:35 +0200
From:	Willy Tarreau <w@....eu>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	Kees Cook <kees.cook@...onical.com>,
	"H. Peter Anvin" <hpa@...ux.intel.com>,
	Fenghua Yu <fenghua.yu@...el.com>,
	Paul Gortmaker <paul.gortmaker@...driver.com>,
	Willy Tarreau <w@....eu>
Subject: [ 158/180] x86, cpufeature: Update CPU feature RDRND to RDRAND

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

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

From: Kees Cook <kees.cook@...onical.com>

commit 7ccafc5f75c87853f3c49845d5a884f2376e03ce upstream.

The Intel manual changed the name of the CPUID bit to match the
instruction name. We should follow suit for sanity's sake. (See Intel SDM
Volume 2, Table 3-20 "Feature Information Returned in the ECX Register".)

[ hpa: we can only do this at this time because there are currently no CPUs
  with this feature on the market, hence this is pre-hardware enabling.
  However, Cc:'ing stable so that stable can present a consistent ABI. ]

Signed-off-by: Kees Cook <kees.cook@...onical.com>
Link: http://lkml.kernel.org/r/20110524232926.GA27728@outflux.net
Signed-off-by: H. Peter Anvin <hpa@...ux.intel.com>
Cc: Fenghua Yu <fenghua.yu@...el.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, 1 insertions(+), 1 deletions(-)

diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h
index 84d5337..27929b8 100644
--- a/arch/x86/include/asm/cpufeature.h
+++ b/arch/x86/include/asm/cpufeature.h
@@ -125,7 +125,7 @@
 #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_RDRAND	(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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