* [PATCH][3/5] x86-64-rdmsrl.patch
@ 2005-04-19 22:06 Arun Sharma
0 siblings, 0 replies; only message in thread
From: Arun Sharma @ 2005-04-19 22:06 UTC (permalink / raw)
To: Ian Pratt, Keir Fraser; +Cc: xen-devel
Use the rdmsrl implementation from Linux.
Signed-off-by: Arun Sharma <arun.sharma@intel.com>
diff -Nru a/xen/include/asm-x86/msr.h b/xen/include/asm-x86/msr.h
--- a/xen/include/asm-x86/msr.h 2005-04-18 16:49:38 -07:00
+++ b/xen/include/asm-x86/msr.h 2005-04-18 16:49:38 -07:00
@@ -6,6 +6,13 @@
: "=a" (val1), "=d" (val2) \
: "c" (msr))
+#define rdmsrl(msr,val) do { unsigned long a__,b__; \
+ __asm__ __volatile__("rdmsr" \
+ : "=a" (a__), "=d" (b__) \
+ : "c" (msr)); \
+ val = a__ | (b__<<32); \
+} while(0);
+
#define wrmsr(msr,val1,val2) \
__asm__ __volatile__("wrmsr" \
: /* no outputs */ \
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2005-04-19 22:06 [PATCH][3/5] x86-64-rdmsrl.patch Arun Sharma
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