diff options
author | Ingo Molnar <mingo@elte.hu> | 2008-10-15 13:46:29 +0200 |
---|---|---|
committer | Ingo Molnar <mingo@elte.hu> | 2008-10-15 13:46:29 +0200 |
commit | b2aaf8f74cdc84a9182f6cabf198b7763bcb9d40 (patch) | |
tree | 53ccb1c2c14751fe69cf93102e76e97021f6df07 /arch/x86/kernel/cpu/bugs_64.c | |
parent | 4f962d4d65923d7b722192e729840cfb79af0a5a (diff) | |
parent | 278429cff8809958d25415ba0ed32b59866ab1a8 (diff) | |
download | kernel_samsung_espresso10-b2aaf8f74cdc84a9182f6cabf198b7763bcb9d40.zip kernel_samsung_espresso10-b2aaf8f74cdc84a9182f6cabf198b7763bcb9d40.tar.gz kernel_samsung_espresso10-b2aaf8f74cdc84a9182f6cabf198b7763bcb9d40.tar.bz2 |
Merge branch 'linus' into stackprotector
Conflicts:
arch/x86/kernel/Makefile
include/asm-x86/pda.h
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 0000000..9a3ed06 --- /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); +} |