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[PATCH] x86-64: Introduce load_TLS to the "for" loop. 

GCC (4.1 at least) unrolls it anyway, but I can't believe this code
was ever justifiable.  (I've also submitted a patch which cleans up
i386, which is even uglier).

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Andi Kleen <ak@suse.de>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Rusty Russell 2007-05-02 19:27:09 +02:00 committed by Andi Kleen
parent 692174b97d
commit eab0c72aec
1 changed files with 4 additions and 7 deletions
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11
include/asm-x86_64/desc.h
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@ -135,16 +135,13 @@ static inline void set_ldt_desc(unsigned cpu, void *addr, int size)
(info)->useable == 0 && \ (info)->useable == 0 && \
(info)->lm == 0) (info)->lm == 0)
#if TLS_SIZE != 24
# error update this code.
#endif
static inline void load_TLS(struct thread_struct *t, unsigned int cpu) static inline void load_TLS(struct thread_struct *t, unsigned int cpu)
{ {
unsigned int i;
u64 *gdt = (u64 *)(cpu_gdt(cpu) + GDT_ENTRY_TLS_MIN); u64 *gdt = (u64 *)(cpu_gdt(cpu) + GDT_ENTRY_TLS_MIN);
gdt[0] = t->tls_array[0];
gdt[1] = t->tls_array[1]; for (i = 0; i < GDT_ENTRY_TLS_ENTRIES; i++)
gdt[2] = t->tls_array[2]; gdt[i] = t->tls_array[i];
} }
/* /*