diff options
Diffstat (limited to 'include/asm-x86_64/desc.h')
| -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) |