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Diffstat (limited to 'arch/x86/kernel/cpu/bugs.c')
-rw-r--r--arch/x86/kernel/cpu/bugs.c34
1 files changed, 15 insertions, 19 deletions
diff --git a/arch/x86/kernel/cpu/bugs.c b/arch/x86/kernel/cpu/bugs.c
index af6455e3fcc..4112be9a465 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"
@@ -75,26 +75,12 @@ 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");
+ }
}
-/*
- * Check whether we are able to run this kernel safely on SMP.
- *
- * - i386 is no longer supported.
- * - In order to run on anything without a TSC, we need to be
- * compiled for a i486.
- */
-
-static void __init check_config(void)
-{
- if (boot_cpu_data.x86 < 4)
- panic("Kernel requires i486+ for 'invlpg' and other features");
-}
-
-
void __init check_bugs(void)
{
identify_boot_cpu();
@@ -102,7 +88,17 @@ void __init check_bugs(void)
pr_info("CPU: ");
print_cpu_info(&boot_cpu_data);
#endif
- check_config();
+
+ /*
+ * Check whether we are able to run this kernel safely on SMP.
+ *
+ * - i386 is no longer supported.
+ * - In order to run on anything without a TSC, we need to be
+ * compiled for a i486.
+ */
+ if (boot_cpu_data.x86 < 4)
+ panic("Kernel requires i486+ for 'invlpg' and other features");
+
init_utsname()->machine[1] =
'0' + (boot_cpu_data.x86 > 6 ? 6 : boot_cpu_data.x86);
alternative_instructions();