Merge pull request #1069 from huangwei/wei/tp-qemu-test-aarch64-tsc_drift

tsc_drift test for aarch64

qemu/deps/timedrift/get_tsc.c

@@ -12,6 +12,7 @@
 
 typedef unsigned long long u64;
 
+#if defined(__x86_64__)
 u64 rdtsc(void)
 {
 	unsigned tsc_lo, tsc_hi;
@@ -19,6 +20,16 @@ u64 rdtsc(void)
 	asm volatile("rdtsc" : "=a"(tsc_lo), "=d"(tsc_hi));
 	return tsc_lo | (u64)tsc_hi << 32;
 }
+#elif defined(__aarch64__)
+u64 rdtsc(void)
+{
+	u64 tsc;
+
+	asm volatile("mrs %0, CNTVCT_EL0" : "=r" (tsc) : : );
+
+	return tsc;
+}
+#endif
 
 int main(void)
 {

qemu/tests/cfg/tsc_drift.cfg

@@ -4,6 +4,7 @@
     type = tsc_drift
     drift_threshold = 10
     interval = 30
-    required_cpu_flags = "constant_tsc"
-    pre_command = "/usr/bin/python shared/scripts/check_cpu_flag.py"
     smp_min = 2
+    i386, x86_64:
+        required_cpu_flags = "constant_tsc"
+        pre_command = "/usr/bin/python shared/scripts/check_cpu_flag.py"