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| 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 /include/asm-x86_64 | |
| parent | 386dcafaacd212ef4a8aeed67a7db3ffbb44c7b2 (diff) | |
| download | linux-01ebb77b31149d847726a8847ad0d37631d7f049.tar.gz linux-01ebb77b31149d847726a8847ad0d37631d7f049.tar.bz2 linux-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 'include/asm-x86_64')
| -rw-r--r-- | include/asm-x86_64/processor.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/asm-x86_64/processor.h b/include/asm-x86_64/processor.h index 3b3c1217fe61..de9c3147ee4c 100644 --- a/include/asm-x86_64/processor.h +++ b/include/asm-x86_64/processor.h @@ -232,8 +232,14 @@ struct tss_struct { unsigned long io_bitmap[IO_BITMAP_LONGS + 1]; } __attribute__((packed)) ____cacheline_aligned; + extern struct cpuinfo_x86 boot_cpu_data; DECLARE_PER_CPU(struct tss_struct,init_tss); +/* Save the original ist values for checking stack pointers during debugging */ +struct orig_ist { + unsigned long ist[7]; +}; +DECLARE_PER_CPU(struct orig_ist, orig_ist); #ifdef CONFIG_X86_VSMP #define ARCH_MIN_TASKALIGN (1 << INTERNODE_CACHE_SHIFT) |