summaryrefslogtreecommitdiff
path: root/arch/x86/kernel/cpu/bugs.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/x86/kernel/cpu/bugs.c')
-rw-r--r--arch/x86/kernel/cpu/bugs.c27
1 files changed, 19 insertions, 8 deletions
diff --git a/arch/x86/kernel/cpu/bugs.c b/arch/x86/kernel/cpu/bugs.c
index 170d2f5523b2..1b1c56bb338f 100644
--- a/arch/x86/kernel/cpu/bugs.c
+++ b/arch/x86/kernel/cpu/bugs.c
@@ -59,8 +59,12 @@ static void __init check_fpu(void)
return;
}
-/* trap_init() enabled FXSR and company _before_ testing for FP problems here. */
- /* Test for the divl bug.. */
+ /*
+ * trap_init() enabled FXSR and company _before_ testing for FP
+ * problems here.
+ *
+ * Test for the divl bug..
+ */
__asm__("fninit\n\t"
"fldl %1\n\t"
"fdivl %2\n\t"
@@ -108,10 +112,15 @@ static void __init check_popad(void)
"movl $12345678,%%eax; movl $0,%%edi; pusha; popa; movl (%%edx,%%edi),%%ecx "
: "=&a" (res)
: "d" (inp)
- : "ecx", "edi" );
- /* If this fails, it means that any user program may lock the CPU hard. Too bad. */
- if (res != 12345678) printk( "Buggy.\n" );
- else printk( "OK.\n" );
+ : "ecx", "edi");
+ /*
+ * If this fails, it means that any user program may lock the
+ * CPU hard. Too bad.
+ */
+ if (res != 12345678)
+ printk("Buggy.\n");
+ else
+ printk("OK.\n");
#endif
}
@@ -137,7 +146,8 @@ static void __init check_config(void)
* i486+ only features! (WP works in supervisor mode and the
* new "invlpg" and "bswap" instructions)
*/
-#if defined(CONFIG_X86_WP_WORKS_OK) || defined(CONFIG_X86_INVLPG) || defined(CONFIG_X86_BSWAP)
+#if defined(CONFIG_X86_WP_WORKS_OK) || defined(CONFIG_X86_INVLPG) || \
+ defined(CONFIG_X86_BSWAP)
if (boot_cpu_data.x86 == 3)
panic("Kernel requires i486+ for 'invlpg' and other features");
#endif
@@ -170,6 +180,7 @@ void __init check_bugs(void)
check_fpu();
check_hlt();
check_popad();
- init_utsname()->machine[1] = '0' + (boot_cpu_data.x86 > 6 ? 6 : boot_cpu_data.x86);
+ init_utsname()->machine[1] =
+ '0' + (boot_cpu_data.x86 > 6 ? 6 : boot_cpu_data.x86);
alternative_instructions();
}