diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h index c0ad7e75815c5859edb01ef2fe300bf527bfd13b..25eb9488a9a52af9ebeb10cd124e9f4dc2018e78 100644 --- a/arch/x86/include/asm/cpufeature.h +++ b/arch/x86/include/asm/cpufeature.h @@ -223,6 +223,7 @@ #define X86_BUG(x) (NCAPINTS*32 + (x)) #define X86_BUG_F00F X86_BUG(0) /* Intel F00F */ +#define X86_BUG_FDIV X86_BUG(1) /* FPU FDIV */ #if defined(__KERNEL__) && !defined(__ASSEMBLY__) diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h index 1e55e2d543b5c0857b7ce5bbd3fdbb995ac5a68d..ea22dfaf6c5e859d6b93d17a95f6c4c66fbbbb44 100644 --- a/arch/x86/include/asm/processor.h +++ b/arch/x86/include/asm/processor.h @@ -91,7 +91,6 @@ struct cpuinfo_x86 { /* Problems on some 486Dx4's and old 386's: */ char hard_math; char rfu; - char fdiv_bug; char coma_bug; char pad0; #else diff --git a/arch/x86/kernel/cpu/bugs.c b/arch/x86/kernel/cpu/bugs.c index af6455e3fcc9b9e6f7f1d75b6ee5ce112a689590..c59635ecbbb8ffeea91567c3315949473eaeb685 100644 --- a/arch/x86/kernel/cpu/bugs.c +++ b/arch/x86/kernel/cpu/bugs.c @@ -59,7 +59,7 @@ static void __init check_fpu(void) * trap_init() enabled FXSR and company _before_ testing for FP * problems here. * - * Test for the divl bug.. + * Test for the divl bug: http://en.wikipedia.org/wiki/Fdiv_bug */ __asm__("fninit\n\t" "fldl %1\n\t" @@ -75,9 +75,10 @@ static void __init check_fpu(void) kernel_fpu_end(); - boot_cpu_data.fdiv_bug = fdiv_bug; - if (boot_cpu_data.fdiv_bug) + if (fdiv_bug) { + set_cpu_bug(&boot_cpu_data, X86_BUG_FDIV); pr_warn("Hmm, FPU with FDIV bug\n"); + } } /* diff --git a/arch/x86/kernel/cpu/proc.c b/arch/x86/kernel/cpu/proc.c index 2d60b2bec01c7e97e7eb5249148b9cf95ba09e64..5dfb6c65138fec3a98ce168554488495d47bfa87 100644 --- a/arch/x86/kernel/cpu/proc.c +++ b/arch/x86/kernel/cpu/proc.c @@ -34,7 +34,7 @@ static void show_cpuinfo_misc(struct seq_file *m, struct cpuinfo_x86 *c) "fpu_exception\t: %s\n" "cpuid level\t: %d\n" "wp\t\t: %s\n", - c->fdiv_bug ? "yes" : "no", + static_cpu_has_bug(X86_BUG_FDIV) ? "yes" : "no", static_cpu_has_bug(X86_BUG_F00F) ? "yes" : "no", c->coma_bug ? "yes" : "no", c->hard_math ? "yes" : "no", diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c index 90d8cc930f5ed134735f7697e016a83e5657dcb8..29258c75a2f3287e7bfbacc27e11d02448c00964 100644 --- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c @@ -173,12 +173,10 @@ static struct resource bss_resource = { /* cpu data as detected by the assembly code in head.S */ struct cpuinfo_x86 new_cpu_data __cpuinitdata = { .wp_works_ok = -1, - .fdiv_bug = -1, }; /* common cpu data for all cpus */ struct cpuinfo_x86 boot_cpu_data __read_mostly = { .wp_works_ok = -1, - .fdiv_bug = -1, }; EXPORT_SYMBOL(boot_cpu_data);