diff options
Diffstat (limited to 'include/asm-i386/processor.h')
-rw-r--r-- | include/asm-i386/processor.h | 22 |
1 files changed, 9 insertions, 13 deletions
diff --git a/include/asm-i386/processor.h b/include/asm-i386/processor.h index d0d8b016009..7e17d3b4f65 100644 --- a/include/asm-i386/processor.h +++ b/include/asm-i386/processor.h | |||
@@ -203,9 +203,7 @@ static inline unsigned int cpuid_edx(unsigned int op) | |||
203 | return edx; | 203 | return edx; |
204 | } | 204 | } |
205 | 205 | ||
206 | #define load_cr3(pgdir) \ | 206 | #define load_cr3(pgdir) write_cr3(__pa(pgdir)) |
207 | asm volatile("movl %0,%%cr3": :"r" (__pa(pgdir))) | ||
208 | |||
209 | 207 | ||
210 | /* | 208 | /* |
211 | * Intel CPU features in CR4 | 209 | * Intel CPU features in CR4 |
@@ -232,22 +230,20 @@ extern unsigned long mmu_cr4_features; | |||
232 | 230 | ||
233 | static inline void set_in_cr4 (unsigned long mask) | 231 | static inline void set_in_cr4 (unsigned long mask) |
234 | { | 232 | { |
233 | unsigned cr4; | ||
235 | mmu_cr4_features |= mask; | 234 | mmu_cr4_features |= mask; |
236 | __asm__("movl %%cr4,%%eax\n\t" | 235 | cr4 = read_cr4(); |
237 | "orl %0,%%eax\n\t" | 236 | cr4 |= mask; |
238 | "movl %%eax,%%cr4\n" | 237 | write_cr4(cr4); |
239 | : : "irg" (mask) | ||
240 | :"ax"); | ||
241 | } | 238 | } |
242 | 239 | ||
243 | static inline void clear_in_cr4 (unsigned long mask) | 240 | static inline void clear_in_cr4 (unsigned long mask) |
244 | { | 241 | { |
242 | unsigned cr4; | ||
245 | mmu_cr4_features &= ~mask; | 243 | mmu_cr4_features &= ~mask; |
246 | __asm__("movl %%cr4,%%eax\n\t" | 244 | cr4 = read_cr4(); |
247 | "andl %0,%%eax\n\t" | 245 | cr4 &= ~mask; |
248 | "movl %%eax,%%cr4\n" | 246 | write_cr4(cr4); |
249 | : : "irg" (~mask) | ||
250 | :"ax"); | ||
251 | } | 247 | } |
252 | 248 | ||
253 | /* | 249 | /* |