| 4,6 → 4,8 |
|---|
| |
| #ifdef __KERNEL__ |
| |
| #include <asm/nops.h> |
| |
| static inline void native_clts(void) |
| { |
| asm volatile("clts"); |
| 96,6 → 98,44 |
|---|
| } |
| #endif |
| |
| #ifdef CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS |
| static inline u32 __read_pkru(void) |
| { |
| u32 ecx = 0; |
| u32 edx, pkru; |
| |
| /* |
| * "rdpkru" instruction. Places PKRU contents in to EAX, |
| * clears EDX and requires that ecx=0. |
| */ |
| asm volatile(".byte 0x0f,0x01,0xee\n\t" |
| : "=a" (pkru), "=d" (edx) |
| : "c" (ecx)); |
| return pkru; |
| } |
| |
| static inline void __write_pkru(u32 pkru) |
| { |
| u32 ecx = 0, edx = 0; |
| |
| /* |
| * "wrpkru" instruction. Loads contents in EAX to PKRU, |
| * requires that ecx = edx = 0. |
| */ |
| asm volatile(".byte 0x0f,0x01,0xef\n\t" |
| : : "a" (pkru), "c"(ecx), "d"(edx)); |
| } |
| #else |
| static inline u32 __read_pkru(void) |
| { |
| return 0; |
| } |
| |
| static inline void __write_pkru(u32 pkru) |
| { |
| } |
| #endif |
| |
| static inline void native_wbinvd(void) |
| { |
| asm volatile("wbinvd": : :"memory"); |