x86: unify paravirt parts of system.h

This patch moves the i386 control registers manipulation functions,
wbinvd, and clts functions to system.h. They are essentially the same
as in x86_64.

With this, system.h paravirt comes for free in x86_64.

[ mingo@elte.hu: reintroduced the cr8 bits - needed for resume images ]

Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 12 insertions, 73 deletions

diff --git a/include/asm-x86/system_64.h b/include/asm-x86/system_64.h
index 0885caace5d4..14ad6138439b 100644
--- a/include/asm-x86/system_64.h
+++ b/include/asm-x86/system_64.h
@@ -1,7 +1,6 @@
 #ifndef __ASM_SYSTEM_H
 #define __ASM_SYSTEM_H
 
-#include <linux/kernel.h>
 #include <asm/segment.h>
 #include <asm/cmpxchg.h>
 
@@ -47,78 +46,6 @@
                        [pda_pcurrent] "i" (offsetof(struct x8664_pda, pcurrent))   \
                      : "memory", "cc" __EXTRA_CLOBBER)
     
-extern void load_gs_index(unsigned); 
-
-/*
- * Clear and set 'TS' bit respectively
- */
-#define clts() __asm__ __volatile__ ("clts")
-
-static inline unsigned long read_cr0(void)
-{ 
-        unsigned long cr0;
-        asm volatile("movq %%cr0,%0" : "=r" (cr0));
-        return cr0;
-}
-
-static inline void write_cr0(unsigned long val) 
-{ 
-        asm volatile("movq %0,%%cr0" :: "r" (val));
-}
-
-static inline unsigned long read_cr2(void)
-{
-        unsigned long cr2;
-        asm volatile("movq %%cr2,%0" : "=r" (cr2));
-        return cr2;
-}
-
-static inline void write_cr2(unsigned long val)
-{
-        asm volatile("movq %0,%%cr2" :: "r" (val));
-}
-
-static inline unsigned long read_cr3(void)
-{ 
-        unsigned long cr3;
-        asm volatile("movq %%cr3,%0" : "=r" (cr3));
-        return cr3;
-}
-
-static inline void write_cr3(unsigned long val)
-{
-        asm volatile("movq %0,%%cr3" :: "r" (val) : "memory");
-}
-
-static inline unsigned long read_cr4(void)
-{ 
-        unsigned long cr4;
-        asm volatile("movq %%cr4,%0" : "=r" (cr4));
-        return cr4;
-}
-
-static inline void write_cr4(unsigned long val)
-{ 
-        asm volatile("movq %0,%%cr4" :: "r" (val) : "memory");
-}
-
-static inline unsigned long read_cr8(void)
-{
-        unsigned long cr8;
-        asm volatile("movq %%cr8,%0" : "=r" (cr8));
-        return cr8;
-}
-
-static inline void write_cr8(unsigned long val)
-{
-        asm volatile("movq %0,%%cr8" :: "r" (val) : "memory");
-}
-
-#define stts() write_cr0(8 | read_cr0())
-
-#define wbinvd() \
-        __asm__ __volatile__ ("wbinvd": : :"memory")
-
 #endif  /* __KERNEL__ */
 
 #ifdef CONFIG_SMP
@@ -148,6 +75,18 @@ static inline void write_cr8(unsigned long val)
 
 #define warn_if_not_ulong(x) do { unsigned long foo; (void) (&(x) == &foo); } while (0)
 
+static inline unsigned long read_cr8(void)
+{
+        unsigned long cr8;
+        asm volatile("movq %%cr8,%0" : "=r" (cr8));
+        return cr8;
+}
+
+static inline void write_cr8(unsigned long val)
+{
+        asm volatile("movq %0,%%cr8" :: "r" (val) : "memory");
+}
+
 #include <linux/irqflags.h>
 
 #endif