diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/include/asm/cpufeature.h | 1 | ||||
| -rw-r--r-- | arch/x86/kernel/cpu/common.c | 16 |
2 files changed, 13 insertions, 4 deletions
diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h index de1ad09fe8d7..e5fc0038c8f6 100644 --- a/arch/x86/include/asm/cpufeature.h +++ b/arch/x86/include/asm/cpufeature.h @@ -50,6 +50,7 @@ extern const char * const x86_power_flags[32]; * X86_BUG_<name> - NCAPINTS*32. */ extern const char * const x86_bug_flags[NBUGINTS*32]; +#define x86_bug_flag(flag) x86_bug_flags[flag] #define test_cpu_cap(c, bit) \ arch_test_bit(bit, (unsigned long *)((c)->x86_capability)) diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c index ff483c9a56c3..0f32b6ffbf04 100644 --- a/arch/x86/kernel/cpu/common.c +++ b/arch/x86/kernel/cpu/common.c @@ -1494,7 +1494,8 @@ static inline void parse_set_clear_cpuid(char *arg, bool set) /* * Handle naked numbers first for feature flags which don't - * have names. + * have names. It doesn't make sense for a bug not to have a + * name so don't handle bug flags here. */ if (!kstrtouint(opt, 10, &bit)) { if (bit < NCAPINTS * 32) { @@ -1518,11 +1519,18 @@ static inline void parse_set_clear_cpuid(char *arg, bool set) continue; } - for (bit = 0; bit < 32 * NCAPINTS; bit++) { - if (!x86_cap_flag(bit)) + for (bit = 0; bit < 32 * (NCAPINTS + NBUGINTS); bit++) { + const char *flag; + + if (bit < 32 * NCAPINTS) + flag = x86_cap_flag(bit); + else + flag = x86_bug_flag(bit - (32 * NCAPINTS)); + + if (!flag) continue; - if (strcmp(x86_cap_flag(bit), opt)) + if (strcmp(flag, opt)) continue; pr_cont(" %s", opt); |