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>
diff --git a/arch/x86/kernel/cpu/bugs.c b/arch/x86/kernel/cpu/bugs.c
index af6455e..c59635e 100644
--- a/arch/x86/kernel/cpu/bugs.c
+++ b/arch/x86/kernel/cpu/bugs.c
@@ -59,7 +59,7 @@
* 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 @@
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");
+ }
}
/*