summaryrefslogtreecommitdiff
path: root/kvm/test/x86/tsc.c
diff options
context:
space:
mode:
Diffstat (limited to 'kvm/test/x86/tsc.c')
-rw-r--r--kvm/test/x86/tsc.c38
1 files changed, 0 insertions, 38 deletions
diff --git a/kvm/test/x86/tsc.c b/kvm/test/x86/tsc.c
deleted file mode 100644
index 394a9c6b8..000000000
--- a/kvm/test/x86/tsc.c
+++ /dev/null
@@ -1,38 +0,0 @@
-#include "libcflat.h"
-
-u64 rdtsc(void)
-{
- unsigned a, d;
-
- asm volatile("rdtsc" : "=a"(a), "=d"(d));
- return a | (u64)d << 32;
-}
-
-void wrtsc(u64 tsc)
-{
- unsigned a = tsc, d = tsc >> 32;
-
- asm volatile("wrmsr" : : "a"(a), "d"(d), "c"(0x10));
-}
-
-void test_wrtsc(u64 t1)
-{
- u64 t2;
-
- wrtsc(t1);
- t2 = rdtsc();
- printf("rdtsc after wrtsc(%lld): %lld\n", t1, t2);
-}
-
-int main()
-{
- u64 t1, t2;
-
- t1 = rdtsc();
- t2 = rdtsc();
- printf("rdtsc latency %lld\n", (unsigned)(t2 - t1));
-
- test_wrtsc(0);
- test_wrtsc(100000000000ull);
- return 0;
-}