diff options
-rw-r--r-- | include/asm-x86/msr.h | 74 |
1 files changed, 39 insertions, 35 deletions
diff --git a/include/asm-x86/msr.h b/include/asm-x86/msr.h index ba4b31432120..664a2fa7adc9 100644 --- a/include/asm-x86/msr.h +++ b/include/asm-x86/msr.h | |||
@@ -191,38 +191,6 @@ static inline int wrmsr_safe_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h) | |||
191 | 191 | ||
192 | #define wrmsrl(msr,val) wrmsr(msr,(__u32)((__u64)(val)),((__u64)(val))>>32) | 192 | #define wrmsrl(msr,val) wrmsr(msr,(__u32)((__u64)(val)),((__u64)(val))>>32) |
193 | 193 | ||
194 | /* wrmsr with exception handling */ | ||
195 | #define wrmsr_safe(msr,a,b) ({ int ret__; \ | ||
196 | asm volatile("2: wrmsr ; xorl %0,%0\n" \ | ||
197 | "1:\n\t" \ | ||
198 | ".section .fixup,\"ax\"\n\t" \ | ||
199 | "3: movl %4,%0 ; jmp 1b\n\t" \ | ||
200 | ".previous\n\t" \ | ||
201 | ".section __ex_table,\"a\"\n" \ | ||
202 | " .align 8\n\t" \ | ||
203 | " .quad 2b,3b\n\t" \ | ||
204 | ".previous" \ | ||
205 | : "=a" (ret__) \ | ||
206 | : "c" (msr), "0" (a), "d" (b), "i" (-EFAULT)); \ | ||
207 | ret__; }) | ||
208 | |||
209 | #define checking_wrmsrl(msr,val) wrmsr_safe(msr,(u32)(val),(u32)((val)>>32)) | ||
210 | |||
211 | #define rdmsr_safe(msr,a,b) \ | ||
212 | ({ int ret__; \ | ||
213 | asm volatile ("1: rdmsr\n" \ | ||
214 | "2:\n" \ | ||
215 | ".section .fixup,\"ax\"\n" \ | ||
216 | "3: movl %4,%0\n" \ | ||
217 | " jmp 2b\n" \ | ||
218 | ".previous\n" \ | ||
219 | ".section __ex_table,\"a\"\n" \ | ||
220 | " .align 8\n" \ | ||
221 | " .quad 1b,3b\n" \ | ||
222 | ".previous":"=&bDS" (ret__), "=a"(*(a)), "=d"(*(b)) \ | ||
223 | :"c"(msr), "i"(-EIO), "0"(0)); \ | ||
224 | ret__; }) | ||
225 | |||
226 | #define rdtsc(low,high) \ | 194 | #define rdtsc(low,high) \ |
227 | __asm__ __volatile__("rdtsc" : "=a" (low), "=d" (high)) | 195 | __asm__ __volatile__("rdtsc" : "=a" (low), "=d" (high)) |
228 | 196 | ||
@@ -230,17 +198,17 @@ static inline int wrmsr_safe_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h) | |||
230 | __asm__ __volatile__ ("rdtsc" : "=a" (low) : : "edx") | 198 | __asm__ __volatile__ ("rdtsc" : "=a" (low) : : "edx") |
231 | 199 | ||
232 | #define rdtscp(low,high,aux) \ | 200 | #define rdtscp(low,high,aux) \ |
233 | asm volatile (".byte 0x0f,0x01,0xf9" : "=a" (low), "=d" (high), "=c" (aux)) | 201 | __asm__ __volatile__ (".byte 0x0f,0x01,0xf9" : "=a" (low), "=d" (high), "=c" (aux)) |
234 | 202 | ||
235 | #define rdtscll(val) do { \ | 203 | #define rdtscll(val) do { \ |
236 | unsigned int __a,__d; \ | 204 | unsigned int __a,__d; \ |
237 | asm volatile("rdtsc" : "=a" (__a), "=d" (__d)); \ | 205 | __asm__ __volatile__("rdtsc" : "=a" (__a), "=d" (__d)); \ |
238 | (val) = ((unsigned long)__a) | (((unsigned long)__d)<<32); \ | 206 | (val) = ((unsigned long)__a) | (((unsigned long)__d)<<32); \ |
239 | } while(0) | 207 | } while(0) |
240 | 208 | ||
241 | #define rdtscpll(val, aux) do { \ | 209 | #define rdtscpll(val, aux) do { \ |
242 | unsigned long __a, __d; \ | 210 | unsigned long __a, __d; \ |
243 | asm volatile (".byte 0x0f,0x01,0xf9" : "=a" (__a), "=d" (__d), "=c" (aux)); \ | 211 | __asm__ __volatile__ (".byte 0x0f,0x01,0xf9" : "=a" (__a), "=d" (__d), "=c" (aux)); \ |
244 | (val) = (__d << 32) | __a; \ | 212 | (val) = (__d << 32) | __a; \ |
245 | } while (0) | 213 | } while (0) |
246 | 214 | ||
@@ -253,6 +221,7 @@ static inline int wrmsr_safe_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h) | |||
253 | : "=a" (low), "=d" (high) \ | 221 | : "=a" (low), "=d" (high) \ |
254 | : "c" (counter)) | 222 | : "c" (counter)) |
255 | 223 | ||
224 | |||
256 | static inline void cpuid(int op, unsigned int *eax, unsigned int *ebx, | 225 | static inline void cpuid(int op, unsigned int *eax, unsigned int *ebx, |
257 | unsigned int *ecx, unsigned int *edx) | 226 | unsigned int *ecx, unsigned int *edx) |
258 | { | 227 | { |
@@ -320,6 +289,40 @@ static inline unsigned int cpuid_edx(unsigned int op) | |||
320 | return edx; | 289 | return edx; |
321 | } | 290 | } |
322 | 291 | ||
292 | #ifdef __KERNEL__ | ||
293 | |||
294 | /* wrmsr with exception handling */ | ||
295 | #define wrmsr_safe(msr,a,b) ({ int ret__; \ | ||
296 | asm volatile("2: wrmsr ; xorl %0,%0\n" \ | ||
297 | "1:\n\t" \ | ||
298 | ".section .fixup,\"ax\"\n\t" \ | ||
299 | "3: movl %4,%0 ; jmp 1b\n\t" \ | ||
300 | ".previous\n\t" \ | ||
301 | ".section __ex_table,\"a\"\n" \ | ||
302 | " .align 8\n\t" \ | ||
303 | " .quad 2b,3b\n\t" \ | ||
304 | ".previous" \ | ||
305 | : "=a" (ret__) \ | ||
306 | : "c" (msr), "0" (a), "d" (b), "i" (-EFAULT)); \ | ||
307 | ret__; }) | ||
308 | |||
309 | #define checking_wrmsrl(msr,val) wrmsr_safe(msr,(u32)(val),(u32)((val)>>32)) | ||
310 | |||
311 | #define rdmsr_safe(msr,a,b) \ | ||
312 | ({ int ret__; \ | ||
313 | asm volatile ("1: rdmsr\n" \ | ||
314 | "2:\n" \ | ||
315 | ".section .fixup,\"ax\"\n" \ | ||
316 | "3: movl %4,%0\n" \ | ||
317 | " jmp 2b\n" \ | ||
318 | ".previous\n" \ | ||
319 | ".section __ex_table,\"a\"\n" \ | ||
320 | " .align 8\n" \ | ||
321 | " .quad 1b,3b\n" \ | ||
322 | ".previous":"=&bDS" (ret__), "=a"(*(a)), "=d"(*(b)) \ | ||
323 | :"c"(msr), "i"(-EIO), "0"(0)); \ | ||
324 | ret__; }) | ||
325 | |||
323 | #ifdef CONFIG_SMP | 326 | #ifdef CONFIG_SMP |
324 | void rdmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 *l, u32 *h); | 327 | void rdmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 *l, u32 *h); |
325 | void wrmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h); | 328 | void wrmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h); |
@@ -343,6 +346,7 @@ static inline int wrmsr_safe_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h) | |||
343 | return wrmsr_safe(msr_no, l, h); | 346 | return wrmsr_safe(msr_no, l, h); |
344 | } | 347 | } |
345 | #endif /* CONFIG_SMP */ | 348 | #endif /* CONFIG_SMP */ |
349 | #endif /* __KERNEL__ */ | ||
346 | #endif /* __ASSEMBLY__ */ | 350 | #endif /* __ASSEMBLY__ */ |
347 | 351 | ||
348 | #endif /* !__i386__ */ | 352 | #endif /* !__i386__ */ |