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From: Jason Wang <jasowang@redhat.com>
To: mtosatti@redhat.com, avi@redhat.com, kvm@vger.kernel.org
Cc: glommer@redhat.com
Subject: [PATCH kvm-unit-test 3/6] Export tsc related helpers
Date: Fri, 27 Aug 2010 13:49:29 +0800
Message-ID: <20100827054928.7409.84735.stgit@FreeLancer> (raw)
In-Reply-To: <20100827054733.7409.63882.stgit@FreeLancer>

Signed-off-by: Jason Wang <jasowang@redhat.com>
---
 lib/x86/processor.h |   22 ++++++++++++++++++++++
 x86/tsc.c           |   16 +---------------
 x86/vmexit.c        |   15 ---------------
 3 files changed, 23 insertions(+), 30 deletions(-)

diff --git a/lib/x86/processor.h b/lib/x86/processor.h
index 67d7ca5..c348808 100644
--- a/lib/x86/processor.h
+++ b/lib/x86/processor.h
@@ -258,4 +258,26 @@ static inline void sti(void)
     asm volatile ("sti");
 }
 
+static inline unsigned long long rdtsc()
+{
+	long long r;
+
+#ifdef __x86_64__
+	unsigned a, d;
+
+	asm volatile ("rdtsc" : "=a"(a), "=d"(d));
+	r = a | ((long long)d << 32);
+#else
+	asm volatile ("rdtsc" : "=A"(r));
+#endif
+	return r;
+}
+
+static inline void wrtsc(u64 tsc)
+{
+	unsigned a = tsc, d = tsc >> 32;
+
+	asm volatile("wrmsr" : : "a"(a), "d"(d), "c"(0x10));
+}
+
 #endif
diff --git a/x86/tsc.c b/x86/tsc.c
index 394a9c6..58f332d 100644
--- a/x86/tsc.c
+++ b/x86/tsc.c
@@ -1,19 +1,5 @@
 #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));
-}
+#include "processor.h"
 
 void test_wrtsc(u64 t1)
 {
diff --git a/x86/vmexit.c b/x86/vmexit.c
index 84c384d..551083d 100644
--- a/x86/vmexit.c
+++ b/x86/vmexit.c
@@ -3,21 +3,6 @@
 #include "smp.h"
 #include "processor.h"
 
-static inline unsigned long long rdtsc()
-{
-	long long r;
-
-#ifdef __x86_64__
-	unsigned a, d;
-
-	asm volatile ("rdtsc" : "=a"(a), "=d"(d));
-	r = a | ((long long)d << 32);
-#else
-	asm volatile ("rdtsc" : "=A"(r));
-#endif
-	return r;
-}
-
 static unsigned int inl(unsigned short port)
 {
     unsigned int val;


  parent reply index

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-08-27  5:49 [PATCH kvm-unit-test 0/6] Kvmclock test Jason Wang
2010-08-27  5:49 ` [PATCH kvm-unit-test 1/6] Introduce memory barriers Jason Wang
2010-08-27  5:49 ` [PATCH kvm-unit-test 2/6] Introduce atomic operations Jason Wang
2010-08-27 11:39   ` Glauber Costa
2010-08-29  9:39     ` Avi Kivity
2010-08-27  5:49 ` Jason Wang [this message]
2010-08-27  5:49 ` [PATCH kvm-unit-test 4/6] Introduce atol() Jason Wang
2010-08-27  5:49 ` [PATCH kvm-unit-test 5/6] Add a simple kvmclock driver Jason Wang
2010-08-27 11:31   ` Glauber Costa
2010-08-27  5:49 ` [PATCH kvm-unit-test 6/6] Add a test for kvm-clock Jason Wang
2010-08-27 11:27   ` Glauber Costa
2010-08-30  3:07     ` Jason Wang
2010-08-27 11:34   ` Glauber Costa
2010-08-30  3:27     ` Jason Wang
2010-08-28  1:58   ` Zachary Amsden

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