diff options
Diffstat (limited to 'arch/x86/include/asm/cpufeature.h')
| -rw-r--r-- | arch/x86/include/asm/cpufeature.h | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h index 0b205b8a430..781a50b29a4 100644 --- a/arch/x86/include/asm/cpufeature.h +++ b/arch/x86/include/asm/cpufeature.h @@ -302,7 +302,7 @@ extern const char * const x86_power_flags[32]; * patch the target code for additional performance. * */ -static __always_inline __pure bool __static_cpu_has(u8 bit) +static __always_inline __pure bool __static_cpu_has(u16 bit) { #if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5) asm goto("1: jmp %l[t_no]\n" @@ -311,11 +311,11 @@ static __always_inline __pure bool __static_cpu_has(u8 bit) _ASM_ALIGN "\n" _ASM_PTR "1b\n" _ASM_PTR "0\n" /* no replacement */ - " .byte %P0\n" /* feature bit */ + " .word %P0\n" /* feature bit */ " .byte 2b - 1b\n" /* source len */ " .byte 0\n" /* replacement len */ - " .byte 0xff + 0 - (2b-1b)\n" /* padding */ ".previous\n" + /* skipping size check since replacement size = 0 */ : : "i" (bit) : : t_no); return true; t_no: @@ -329,10 +329,12 @@ static __always_inline __pure bool __static_cpu_has(u8 bit) _ASM_ALIGN "\n" _ASM_PTR "1b\n" _ASM_PTR "3f\n" - " .byte %P1\n" /* feature bit */ + " .word %P1\n" /* feature bit */ " .byte 2b - 1b\n" /* source len */ " .byte 4f - 3f\n" /* replacement len */ - " .byte 0xff + (4f-3f) - (2b-1b)\n" /* padding */ + ".previous\n" + ".section .discard,\"aw\",@progbits\n" + " .byte 0xff + (4f-3f) - (2b-1b)\n" /* size check */ ".previous\n" ".section .altinstr_replacement,\"ax\"\n" "3: movb $1,%0\n" @@ -348,7 +350,7 @@ static __always_inline __pure bool __static_cpu_has(u8 bit) ( \ __builtin_constant_p(boot_cpu_has(bit)) ? \ boot_cpu_has(bit) : \ - (__builtin_constant_p(bit) && !((bit) & ~0xff)) ? \ + __builtin_constant_p(bit) ? \ __static_cpu_has(bit) : \ boot_cpu_has(bit) \ ) |