diff options
| author | Keith Owens <kaos@ocs.com.au> | 2006-08-30 19:37:19 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-08-30 16:05:16 -0700 |
| commit | 01ebb77b31149d847726a8847ad0d37631d7f049 (patch) | |
| tree | a91d01f8c17d24041a4f2015e093ddfbd9defa1e /arch/x86_64/kernel/setup64.c | |
| parent | 386dcafaacd212ef4a8aeed67a7db3ffbb44c7b2 (diff) | |
| download | lwn-01ebb77b31149d847726a8847ad0d37631d7f049.tar.gz lwn-01ebb77b31149d847726a8847ad0d37631d7f049.zip | |
[PATCH] x86_64: Save original IST values for checking stack addresses
The values in init_tss.ist[] can change when an IST event occurs. Save
the original IST values for checking stack addresses when debugging or
doing stack traces.
Signed-off-by: Keith Owens <kaos@ocs.com.au>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/x86_64/kernel/setup64.c')
| -rw-r--r-- | arch/x86_64/kernel/setup64.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/x86_64/kernel/setup64.c b/arch/x86_64/kernel/setup64.c index 6fe58a634b5f..417de564456e 100644 --- a/arch/x86_64/kernel/setup64.c +++ b/arch/x86_64/kernel/setup64.c @@ -189,6 +189,7 @@ void __cpuinit cpu_init (void) { int cpu = stack_smp_processor_id(); struct tss_struct *t = &per_cpu(init_tss, cpu); + struct orig_ist *orig_ist = &per_cpu(orig_ist, cpu); unsigned long v; char *estacks = NULL; struct task_struct *me; @@ -256,7 +257,7 @@ void __cpuinit cpu_init (void) estacks += EXCEPTION_STKSZ; break; } - t->ist[v] = (unsigned long)estacks; + orig_ist->ist[v] = t->ist[v] = (unsigned long)estacks; } t->io_bitmap_base = offsetof(struct tss_struct, io_bitmap); |