From: Avi Kivity <avi@xxxxxxxxxx>
Signed-off-by: Avi Kivity <avi@xxxxxxxxxx>
Signed-off-by: Gleb Natapov <gleb@xxxxxxxxxx>
---
lib/x86/processor.h | 8 ++++++++
1 files changed, 8 insertions(+), 0 deletions(-)
diff --git a/lib/x86/processor.h b/lib/x86/processor.h
index f69f9ff..c7e1afb 100644
--- a/lib/x86/processor.h
+++ b/lib/x86/processor.h
@@ -2,6 +2,7 @@
#define LIBCFLAT_PROCESSOR_H
#include "libcflat.h"
+#include <stdint.h>
struct descriptor_table_ptr {
u16 limit;
@@ -99,6 +100,13 @@ static inline void wrmsr(u32 index, u64 val)
asm volatile ("wrmsr" : : "a"(a), "d"(d), "c"(index) : "memory");
}
+static inline uint64_t rdpmc(uint32_t index)
+{
+ uint32_t a, d;
+ asm volatile ("rdpmc" : "=a"(a), "=d"(d) : "c"(index));
+ return a | ((uint64_t)d << 32);
+}
+
static inline void write_cr0(ulong val)
{
asm volatile ("mov %0, %%cr0" : : "r"(val) : "memory");
--
1.7.7.3
--
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