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| author |   Borislav Petkov <bp@suse.de> | 2013-03-20 15:07:25 +0100 |
|---|---|---|
| committer |   H. Peter Anvin <hpa@zytor.com> | 2013-04-02 10:12:53 -0700 |
| commit | 93a829e8e2c292f1d30155f64803101ca1cb7d3d (patch) | |
| tree | 14543e11fa52235976ed9cda780e65d294bfd1af /arch/x86/kernel/cpu/bugs.c | |
| parent | x86, cpu: Convert F00F bug detection (diff) | |
| download | linux-dev-93a829e8e2c292f1d30155f64803101ca1cb7d3d.tar.xz linux-dev-93a829e8e2c292f1d30155f64803101ca1cb7d3d.zip | |
x86, cpu: Convert FDIV bug detection
... to the new facility. Add a reference to the wikipedia article
explaining the FDIV test we're doing here.
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: http://lkml.kernel.org/r/1363788448-31325-4-git-send-email-bp@alien8.de
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'arch/x86/kernel/cpu/bugs.c')
| -rw-r--r-- | arch/x86/kernel/cpu/bugs.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/arch/x86/kernel/cpu/bugs.c b/arch/x86/kernel/cpu/bugs.c index af6455e3fcc9..c59635ecbbb8 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"); + } } /* |