diff options
| author | Matt Mackall | 2006-01-08 10:05:24 +0100 |
|---|---|---|
| committer | Linus Torvalds | 2006-01-09 05:14:11 +0100 |
| commit | 22c4e3084eb8b88288a622a57d8b35c450a439f2 (patch) | |
| tree | 5d763dcb1f451aa2a89c779c5a68fb6882dadfb6 /arch/i386/kernel/cpu | |
| parent | [PATCH] tiny: Trim non-IPX builds (diff) | |
| download | kernel-qcow2-linux-22c4e3084eb8b88288a622a57d8b35c450a439f2.tar.gz kernel-qcow2-linux-22c4e3084eb8b88288a622a57d8b35c450a439f2.tar.xz kernel-qcow2-linux-22c4e3084eb8b88288a622a57d8b35c450a439f2.zip | |
[PATCH] tiny: Make x86 doublefault handling optional
This adds configurable support for doublefault reporting on x86
add/remove: 0/3 grow/shrink: 0/1 up/down: 0/-13048 (-13048)
function old new delta
cpu_init 846 786 -60
doublefault_fn 188 - -188
doublefault_stack 4096 - -4096
doublefault_tss 8704 - -8704
Signed-off-by: Matt Mackall <mpm@selenic.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/i386/kernel/cpu')
| -rw-r--r-- | arch/i386/kernel/cpu/common.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/i386/kernel/cpu/common.c b/arch/i386/kernel/cpu/common.c index cca655688ffc..170400879f44 100644 --- a/arch/i386/kernel/cpu/common.c +++ b/arch/i386/kernel/cpu/common.c @@ -609,8 +609,10 @@ void __devinit cpu_init(void) load_TR_desc(); load_LDT(&init_mm.context); +#ifdef CONFIG_DOUBLEFAULT /* Set up doublefault TSS pointer in the GDT */ __set_tss_desc(cpu, GDT_ENTRY_DOUBLEFAULT_TSS, &doublefault_tss); +#endif /* Clear %fs and %gs. */ asm volatile ("xorl %eax, %eax; movl %eax, %fs; movl %eax, %gs"); |