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author | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-05 14:55:20 -0700 |
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committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-05 14:55:20 -0700 |
commit | ea62ccd00fd0b6720b033adfc9984f31130ce195 (patch) | |
tree | 9837b797b2466fffcb0af96c388b06eae9c3df18 /include/asm-i386/system.h | |
parent | 886a0768affe9a32f18c45f8e1393bca9ece5392 (diff) | |
parent | 35060b6a9a4e1c89bc6fbea61090e302dbc61847 (diff) | |
download | lwn-ea62ccd00fd0b6720b033adfc9984f31130ce195.tar.gz lwn-ea62ccd00fd0b6720b033adfc9984f31130ce195.zip |
Merge branch 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6
* 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6: (231 commits)
[PATCH] i386: Don't delete cpu_devs data to identify different x86 types in late_initcall
[PATCH] i386: type may be unused
[PATCH] i386: Some additional chipset register values validation.
[PATCH] i386: Add missing !X86_PAE dependincy to the 2G/2G split.
[PATCH] x86-64: Don't exclude asm-offsets.c in Documentation/dontdiff
[PATCH] i386: avoid redundant preempt_disable in __unlazy_fpu
[PATCH] i386: white space fixes in i387.h
[PATCH] i386: Drop noisy e820 debugging printks
[PATCH] x86-64: Fix allnoconfig error in genapic_flat.c
[PATCH] x86-64: Shut up warnings for vfat compat ioctls on other file systems
[PATCH] x86-64: Share identical video.S between i386 and x86-64
[PATCH] x86-64: Remove CONFIG_REORDER
[PATCH] x86-64: Print type and size correctly for unknown compat ioctls
[PATCH] i386: Remove copy_*_user BUG_ONs for (size < 0)
[PATCH] i386: Little cleanups in smpboot.c
[PATCH] x86-64: Don't enable NUMA for a single node in K8 NUMA scanning
[PATCH] x86: Use RDTSCP for synchronous get_cycles if possible
[PATCH] i386: Add X86_FEATURE_RDTSCP
[PATCH] i386: Implement X86_FEATURE_SYNC_RDTSC on i386
[PATCH] i386: Implement alternative_io for i386
...
Fix up trivial conflict in include/linux/highmem.h manually.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/asm-i386/system.h')
-rw-r--r-- | include/asm-i386/system.h | 139 |
1 files changed, 85 insertions, 54 deletions
diff --git a/include/asm-i386/system.h b/include/asm-i386/system.h index a6d20d9a1a30..c3a58c08c495 100644 --- a/include/asm-i386/system.h +++ b/include/asm-i386/system.h @@ -88,65 +88,96 @@ __asm__ __volatile__ ("movw %%dx,%1\n\t" \ #define savesegment(seg, value) \ asm volatile("mov %%" #seg ",%0":"=rm" (value)) + +static inline void native_clts(void) +{ + asm volatile ("clts"); +} + +static inline unsigned long native_read_cr0(void) +{ + unsigned long val; + asm volatile("movl %%cr0,%0\n\t" :"=r" (val)); + return val; +} + +static inline void native_write_cr0(unsigned long val) +{ + asm volatile("movl %0,%%cr0": :"r" (val)); +} + +static inline unsigned long native_read_cr2(void) +{ + unsigned long val; + asm volatile("movl %%cr2,%0\n\t" :"=r" (val)); + return val; +} + +static inline void native_write_cr2(unsigned long val) +{ + asm volatile("movl %0,%%cr2": :"r" (val)); +} + +static inline unsigned long native_read_cr3(void) +{ + unsigned long val; + asm volatile("movl %%cr3,%0\n\t" :"=r" (val)); + return val; +} + +static inline void native_write_cr3(unsigned long val) +{ + asm volatile("movl %0,%%cr3": :"r" (val)); +} + +static inline unsigned long native_read_cr4(void) +{ + unsigned long val; + asm volatile("movl %%cr4,%0\n\t" :"=r" (val)); + return val; +} + +static inline unsigned long native_read_cr4_safe(void) +{ + unsigned long val; + /* This could fault if %cr4 does not exist */ + asm("1: movl %%cr4, %0 \n" + "2: \n" + ".section __ex_table,\"a\" \n" + ".long 1b,2b \n" + ".previous \n" + : "=r" (val): "0" (0)); + return val; +} + +static inline void native_write_cr4(unsigned long val) +{ + asm volatile("movl %0,%%cr4": :"r" (val)); +} + +static inline void native_wbinvd(void) +{ + asm volatile("wbinvd": : :"memory"); +} + + #ifdef CONFIG_PARAVIRT #include <asm/paravirt.h> #else -#define read_cr0() ({ \ - unsigned int __dummy; \ - __asm__ __volatile__( \ - "movl %%cr0,%0\n\t" \ - :"=r" (__dummy)); \ - __dummy; \ -}) -#define write_cr0(x) \ - __asm__ __volatile__("movl %0,%%cr0": :"r" (x)) - -#define read_cr2() ({ \ - unsigned int __dummy; \ - __asm__ __volatile__( \ - "movl %%cr2,%0\n\t" \ - :"=r" (__dummy)); \ - __dummy; \ -}) -#define write_cr2(x) \ - __asm__ __volatile__("movl %0,%%cr2": :"r" (x)) - -#define read_cr3() ({ \ - unsigned int __dummy; \ - __asm__ ( \ - "movl %%cr3,%0\n\t" \ - :"=r" (__dummy)); \ - __dummy; \ -}) -#define write_cr3(x) \ - __asm__ __volatile__("movl %0,%%cr3": :"r" (x)) - -#define read_cr4() ({ \ - unsigned int __dummy; \ - __asm__( \ - "movl %%cr4,%0\n\t" \ - :"=r" (__dummy)); \ - __dummy; \ -}) -#define read_cr4_safe() ({ \ - unsigned int __dummy; \ - /* This could fault if %cr4 does not exist */ \ - __asm__("1: movl %%cr4, %0 \n" \ - "2: \n" \ - ".section __ex_table,\"a\" \n" \ - ".long 1b,2b \n" \ - ".previous \n" \ - : "=r" (__dummy): "0" (0)); \ - __dummy; \ -}) -#define write_cr4(x) \ - __asm__ __volatile__("movl %0,%%cr4": :"r" (x)) - -#define wbinvd() \ - __asm__ __volatile__ ("wbinvd": : :"memory") +#define read_cr0() (native_read_cr0()) +#define write_cr0(x) (native_write_cr0(x)) +#define read_cr2() (native_read_cr2()) +#define write_cr2(x) (native_write_cr2(x)) +#define read_cr3() (native_read_cr3()) +#define write_cr3(x) (native_write_cr3(x)) +#define read_cr4() (native_read_cr4()) +#define read_cr4_safe() (native_read_cr4_safe()) +#define write_cr4(x) (native_write_cr4(x)) +#define wbinvd() (native_wbinvd()) /* Clear the 'TS' bit */ -#define clts() __asm__ __volatile__ ("clts") +#define clts() (native_clts()) + #endif/* CONFIG_PARAVIRT */ /* Set the 'TS' bit */ |