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Message-Id: <1214430328.20425.20.camel@w-amax.beaverton.ibm.com>
Date: Wed, 25 Jun 2008 14:45:28 -0700
From: Max Asbock <masbock@...ibm.com>
To: gcosta@...hat.com, tglx <tglx@...utronix.de>,
mingo <mingo@...hat.com>, hpa <hpa@...or.com>
Cc: linux-kernel@...r.kernel.org
Subject: [patch] x86: shift bits the right way in native_read_tscp
native_read_tscp shifts the bits in the high order value in the wrong direction,
the attached patch fixes that.
Signed-off-by: Max Asbock <masbock@...ux.vnet.ibm.com>
diff -pburN linux/include/asm-x86/msr.h linux.rdtscp/include/asm-x86/msr.h
--- linux/include/asm-x86/msr.h 2008-06-20 11:51:17.000000000 -0700
+++ linux.rdtscp/include/asm-x86/msr.h 2008-06-25 14:26:35.000000000 -0700
@@ -18,7 +18,7 @@ static inline unsigned long long native_
unsigned long low, high;
asm volatile(".byte 0x0f,0x01,0xf9"
: "=a" (low), "=d" (high), "=c" (*aux));
- return low | ((u64)high >> 32);
+ return low | ((u64)high << 32);
}
/*
---
Max
--
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