Make x86 consistent with other architectures and put
memory barrier defines to lib/x86/asm/barrier.h
Cc: Andrew Jones <drjones@xxxxxxxxxx>
Cc: Thomas Huth <thuth@xxxxxxxxxx>
Cc: Radim Krčmář <rkrcmar@xxxxxxxxxx>
Signed-off-by: Alexander Gordeev <agordeev@xxxxxxxxxx>
---
lib/x86/asm/barrier.h | 8 ++++++++
lib/x86/asm/io.h | 1 +
lib/x86/smp.h | 4 ----
x86/kvmclock.c | 1 +
4 files changed, 10 insertions(+), 4 deletions(-)
create mode 100644 lib/x86/asm/barrier.h
diff --git a/lib/x86/asm/barrier.h b/lib/x86/asm/barrier.h
new file mode 100644
index 0000000..0ca1c56
--- /dev/null
+++ b/lib/x86/asm/barrier.h
@@ -0,0 +1,8 @@
+#ifndef _ASM_X86_BARRIER_H_
+#define _ASM_X86_BARRIER_H_
+
+#define mb() asm volatile("mfence":::"memory")
+#define rmb() asm volatile("lfence":::"memory")
+#define wmb() asm volatile("sfence" ::: "memory")
+
+#endif
diff --git a/lib/x86/asm/io.h b/lib/x86/asm/io.h
index 68b10e5..5b901a3 100644
--- a/lib/x86/asm/io.h
+++ b/lib/x86/asm/io.h
@@ -2,6 +2,7 @@
#define _ASM_X86_IO_H_
#include "asm/page.h"
+#include "asm/barrier.h"
static inline unsigned char inb(unsigned short port)
{
diff --git a/lib/x86/smp.h b/lib/x86/smp.h
index 566018f..afabac8 100644
--- a/lib/x86/smp.h
+++ b/lib/x86/smp.h
@@ -2,10 +2,6 @@
#define __SMP_H
#include <asm/spinlock.h>
-#define mb() asm volatile("mfence":::"memory")
-#define rmb() asm volatile("lfence":::"memory")
-#define wmb() asm volatile("sfence" ::: "memory")
-
void smp_init(void);
int cpu_count(void);
diff --git a/x86/kvmclock.c b/x86/kvmclock.c
index 327e60d..208d43c 100644
--- a/x86/kvmclock.c
+++ b/x86/kvmclock.c
@@ -3,6 +3,7 @@
#include "atomic.h"
#include "processor.h"
#include "kvmclock.h"
+#include "asm/barrier.h"
#define unlikely(x) __builtin_expect(!!(x), 0)
#define likely(x) __builtin_expect(!!(x), 1)
--
1.8.3.1
--
To unsubscribe from this list: send the line "unsubscribe kvm" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
