diff options
| author |   Siddha, Suresh B <suresh.b.siddha@intel.com> | 2005-11-13 16:06:21 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@g5.osdl.org> | 2005-11-13 18:14:09 -0800 |
| commit | 47936357c0d14809c3c9547e532511f6625654b2 (patch) | |
| tree | a0b05cdc13fa9192ed9d167b5597eafab998ffaf /include/asm-x86_64 | |
| parent | Merge branch 'upstream-fixes' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev (diff) | |
| download | linux-dev-47936357c0d14809c3c9547e532511f6625654b2.tar.xz linux-dev-47936357c0d14809c3c9547e532511f6625654b2.zip | |
[PATCH] x86_64: fix tss limit
Fix the x86_64 TSS limit in TSS descriptor.
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Acked-by: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/asm-x86_64')
| -rw-r--r-- | include/asm-x86_64/desc.h | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/include/asm-x86_64/desc.h b/include/asm-x86_64/desc.h index 68ac3c62fe3d..b837820c9073 100644 --- a/include/asm-x86_64/desc.h +++ b/include/asm-x86_64/desc.h @@ -129,9 +129,16 @@ static inline void set_tssldt_descriptor(void *ptr, unsigned long tss, unsigned static inline void set_tss_desc(unsigned cpu, void *addr) { - set_tssldt_descriptor(&cpu_gdt_table[cpu][GDT_ENTRY_TSS], (unsigned long)addr, - DESC_TSS, - sizeof(struct tss_struct) - 1); + /* + * sizeof(unsigned long) coming from an extra "long" at the end + * of the iobitmap. See tss_struct definition in processor.h + * + * -1? seg base+limit should be pointing to the address of the + * last valid byte + */ + set_tssldt_descriptor(&cpu_gdt_table[cpu][GDT_ENTRY_TSS], + (unsigned long)addr, DESC_TSS, + IO_BITMAP_OFFSET + IO_BITMAP_BYTES + sizeof(unsigned long) - 1); } static inline void set_ldt_desc(unsigned cpu, void *addr, int size) |