diff options
Diffstat (limited to 'include/asm-x86')
| -rw-r--r-- | include/asm-x86/cpufeature.h | 11 | ||||
| -rw-r--r-- | include/asm-x86/msr.h | 27 | ||||
| -rw-r--r-- | include/asm-x86/required-features.h | 8 |
3 files changed, 27 insertions, 19 deletions
diff --git a/include/asm-x86/cpufeature.h b/include/asm-x86/cpufeature.h index 762f6a6..9489283 100644 --- a/include/asm-x86/cpufeature.h +++ b/include/asm-x86/cpufeature.h @@ -72,14 +72,15 @@ #define X86_FEATURE_UP (3*32+ 9) /* smp kernel running on up */ #define X86_FEATURE_FXSAVE_LEAK (3*32+10) /* FXSAVE leaks FOP/FIP/FOP */ #define X86_FEATURE_ARCH_PERFMON (3*32+11) /* Intel Architectural PerfMon */ -#define X86_FEATURE_PEBS (3*32+12) /* Precise-Event Based Sampling */ -#define X86_FEATURE_BTS (3*32+13) /* Branch Trace Store */ -#define X86_FEATURE_SYSCALL32 (3*32+14) /* syscall in ia32 userspace */ -#define X86_FEATURE_SYSENTER32 (3*32+15) /* sysenter in ia32 userspace */ +#define X86_FEATURE_PEBS (3*32+12) /* Precise-Event Based Sampling */ +#define X86_FEATURE_BTS (3*32+13) /* Branch Trace Store */ +#define X86_FEATURE_SYSCALL32 (3*32+14) /* syscall in ia32 userspace */ +#define X86_FEATURE_SYSENTER32 (3*32+15) /* sysenter in ia32 userspace */ #define X86_FEATURE_REP_GOOD (3*32+16) /* rep microcode works well on this CPU */ #define X86_FEATURE_MFENCE_RDTSC (3*32+17) /* Mfence synchronizes RDTSC */ #define X86_FEATURE_LFENCE_RDTSC (3*32+18) /* Lfence synchronizes RDTSC */ -#define X86_FEATURE_11AP (3*32+19) /* Bad local APIC aka 11AP */ +#define X86_FEATURE_11AP (3*32+19) /* Bad local APIC aka 11AP */ +#define X86_FEATURE_NOPL (3*32+20) /* The NOPL (0F 1F) instructions */ /* Intel-defined CPU features, CPUID level 0x00000001 (ecx), word 4 */ #define X86_FEATURE_XMM3 (4*32+ 0) /* Streaming SIMD Extensions-3 */ diff --git a/include/asm-x86/msr.h b/include/asm-x86/msr.h index ca110ee..2362cfd 100644 --- a/include/asm-x86/msr.h +++ b/include/asm-x86/msr.h @@ -52,14 +52,14 @@ static inline unsigned long long native_read_msr_safe(unsigned int msr, { DECLARE_ARGS(val, low, high); - asm volatile("2: rdmsr ; xor %0,%0\n" + asm volatile("2: rdmsr ; xor %[err],%[err]\n" "1:\n\t" ".section .fixup,\"ax\"\n\t" - "3: mov %3,%0 ; jmp 1b\n\t" + "3: mov %[fault],%[err] ; jmp 1b\n\t" ".previous\n\t" _ASM_EXTABLE(2b, 3b) - : "=r" (*err), EAX_EDX_RET(val, low, high) - : "c" (msr), "i" (-EFAULT)); + : [err] "=r" (*err), EAX_EDX_RET(val, low, high) + : "c" (msr), [fault] "i" (-EFAULT)); return EAX_EDX_VAL(val, low, high); } @@ -73,15 +73,15 @@ static inline int native_write_msr_safe(unsigned int msr, unsigned low, unsigned high) { int err; - asm volatile("2: wrmsr ; xor %0,%0\n" + asm volatile("2: wrmsr ; xor %[err],%[err]\n" "1:\n\t" ".section .fixup,\"ax\"\n\t" - "3: mov %4,%0 ; jmp 1b\n\t" + "3: mov %[fault],%[err] ; jmp 1b\n\t" ".previous\n\t" _ASM_EXTABLE(2b, 3b) - : "=a" (err) + : [err] "=a" (err) : "c" (msr), "0" (low), "d" (high), - "i" (-EFAULT) + [fault] "i" (-EFAULT) : "memory"); return err; } @@ -192,19 +192,20 @@ do { \ #define write_rdtscp_aux(val) wrmsr(0xc0000103, (val), 0) #ifdef CONFIG_SMP -void rdmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 *l, u32 *h); -void wrmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h); +int rdmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 *l, u32 *h); +int wrmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h); int rdmsr_safe_on_cpu(unsigned int cpu, u32 msr_no, u32 *l, u32 *h); - int wrmsr_safe_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h); #else /* CONFIG_SMP */ -static inline void rdmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 *l, u32 *h) +static inline int rdmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 *l, u32 *h) { rdmsr(msr_no, *l, *h); + return 0; } -static inline void wrmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h) +static inline int wrmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h) { wrmsr(msr_no, l, h); + return 0; } static inline int rdmsr_safe_on_cpu(unsigned int cpu, u32 msr_no, u32 *l, u32 *h) diff --git a/include/asm-x86/required-features.h b/include/asm-x86/required-features.h index adec887..5c2ff4b 100644 --- a/include/asm-x86/required-features.h +++ b/include/asm-x86/required-features.h @@ -41,6 +41,12 @@ # define NEED_3DNOW 0 #endif +#if defined(CONFIG_X86_P6_NOP) || defined(CONFIG_X86_64) +# define NEED_NOPL (1<<(X86_FEATURE_NOPL & 31)) +#else +# define NEED_NOPL 0 +#endif + #ifdef CONFIG_X86_64 #define NEED_PSE 0 #define NEED_MSR (1<<(X86_FEATURE_MSR & 31)) @@ -67,7 +73,7 @@ #define REQUIRED_MASK1 (NEED_LM|NEED_3DNOW) #define REQUIRED_MASK2 0 -#define REQUIRED_MASK3 0 +#define REQUIRED_MASK3 (NEED_NOPL) #define REQUIRED_MASK4 0 #define REQUIRED_MASK5 0 #define REQUIRED_MASK6 0 |