提交 47936357 编写于 作者: S Siddha, Suresh B 提交者: Linus Torvalds

[PATCH] x86_64: fix tss limit

Fix the x86_64 TSS limit in TSS descriptor.
Signed-off-by: NSuresh Siddha <suresh.b.siddha@intel.com>
Acked-by: NAndi Kleen <ak@muc.de>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
上级 4ba529a8
......@@ -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)
......
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