diff options
| author | Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> | 2008-06-03 13:06:07 -0700 |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2008-06-03 14:43:00 -0700 |
| commit | d44b9d17faf7bca165ce73a1acb936b65a3f0cc6 (patch) | |
| tree | 864fb0656b95dce778c7fe21eec22cd7accd170e /arch/x86/kernel/cpu/bugs_64.c | |
| parent | 1a5726528a70bb239bdd149aef7f2155cd2b1699 (diff) | |
x86: move bugs_64.c to cpu/bugs_64.c
It looks good to move bugs_64.c to cpu/bugs_64.c.
Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'arch/x86/kernel/cpu/bugs_64.c')
| -rw-r--r-- | arch/x86/kernel/cpu/bugs_64.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/arch/x86/kernel/cpu/bugs_64.c b/arch/x86/kernel/cpu/bugs_64.c new file mode 100644 index 00000000000..9a3ed0649d4 --- /dev/null +++ b/arch/x86/kernel/cpu/bugs_64.c @@ -0,0 +1,33 @@ +/* + * Copyright (C) 1994 Linus Torvalds + * Copyright (C) 2000 SuSE + */ + +#include <linux/kernel.h> +#include <linux/init.h> +#include <asm/alternative.h> +#include <asm/bugs.h> +#include <asm/processor.h> +#include <asm/mtrr.h> +#include <asm/cacheflush.h> + +void __init check_bugs(void) +{ + identify_boot_cpu(); +#if !defined(CONFIG_SMP) + printk("CPU: "); + print_cpu_info(&boot_cpu_data); +#endif + alternative_instructions(); + + /* + * Make sure the first 2MB area is not mapped by huge pages + * There are typically fixed size MTRRs in there and overlapping + * MTRRs into large pages causes slow downs. + * + * Right now we don't do that with gbpages because there seems + * very little benefit for that case. + */ + if (!direct_gbpages) + set_memory_4k((unsigned long)__va(0), 1); +} |