From: Rusty Russell 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 Cc: Andi Kleen Signed-off-by: Andrew Morton --- include/asm-x86_64/desc.h | 11 ++++------- 1 file changed, 4 insertions(+), 7 deletions(-) diff -puN include/asm-x86_64/desc.h~introduce-load_tls-to-the-for-loop include/asm-x86_64/desc.h --- a/include/asm-x86_64/desc.h~introduce-load_tls-to-the-for-loop +++ a/include/asm-x86_64/desc.h @@ -145,16 +145,13 @@ static inline void set_seg_base(unsigned (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]; } /* _