diff options
| -rw-r--r-- | include/asm-x86_64/system.h | 7 | ||||
| -rw-r--r-- | include/asm-x86_64/tlbflush.h | 33 |
2 files changed, 11 insertions, 29 deletions
diff --git a/include/asm-x86_64/system.h b/include/asm-x86_64/system.h index bd376bc8c4a..213b7fe5d99 100644 --- a/include/asm-x86_64/system.h +++ b/include/asm-x86_64/system.h @@ -89,6 +89,11 @@ static inline unsigned long read_cr3(void) 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; @@ -98,7 +103,7 @@ static inline unsigned long read_cr4(void) static inline void write_cr4(unsigned long val) { - asm volatile("movq %0,%%cr4" :: "r" (val)); + asm volatile("movq %0,%%cr4" :: "r" (val) : "memory"); } #define stts() write_cr0(8 | read_cr0()) diff --git a/include/asm-x86_64/tlbflush.h b/include/asm-x86_64/tlbflush.h index 983bd296c81..512401b8725 100644 --- a/include/asm-x86_64/tlbflush.h +++ b/include/asm-x86_64/tlbflush.h @@ -3,41 +3,18 @@ #include <linux/mm.h> #include <asm/processor.h> - -static inline unsigned long get_cr3(void) -{ - unsigned long cr3; - asm volatile("mov %%cr3,%0" : "=r" (cr3)); - return cr3; -} - -static inline void set_cr3(unsigned long cr3) -{ - asm volatile("mov %0,%%cr3" :: "r" (cr3) : "memory"); -} +#include <asm/system.h> static inline void __flush_tlb(void) { - set_cr3(get_cr3()); -} - -static inline unsigned long get_cr4(void) -{ - unsigned long cr4; - asm volatile("mov %%cr4,%0" : "=r" (cr4)); - return cr4; -} - -static inline void set_cr4(unsigned long cr4) -{ - asm volatile("mov %0,%%cr4" :: "r" (cr4) : "memory"); + write_cr3(read_cr3()); } static inline void __flush_tlb_all(void) { - unsigned long cr4 = get_cr4(); - set_cr4(cr4 & ~X86_CR4_PGE); /* clear PGE */ - set_cr4(cr4); /* write old PGE again and flush TLBs */ + unsigned long cr4 = read_cr4(); + write_cr4(cr4 & ~X86_CR4_PGE); /* clear PGE */ + write_cr4(cr4); /* write old PGE again and flush TLBs */ } #define __flush_tlb_one(addr) \ |