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Commit eab0c72a authored by Rusty Russell's avatar Rusty Russell Committed by Andi Kleen
Browse files

[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: default avatarRusty Russell <rusty@rustcorp.com.au>
Signed-off-by: default avatarAndi Kleen <ak@suse.de>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
parent 692174b9

include/asm-x86_64/desc.h

+4 −7
Original line number Diff line number Diff line
@@ -135,16 +135,13 @@ static inline void set_ldt_desc(unsigned cpu, void *addr, int size) 
	(info)->useable		== 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)

{

	unsigned int i;

	u64 *gdt = (u64 *)(cpu_gdt(cpu) + GDT_ENTRY_TLS_MIN);

	gdt[0] = t->tls_array[0];

	gdt[1] = t->tls_array[1];

	gdt[2] = t->tls_array[2];



	for (i = 0; i < GDT_ENTRY_TLS_ENTRIES; i++)

		gdt[i] = t->tls_array[i];

} 



/*