On Friday 16 June 2006 17:58, Jakub Jelinek wrote: > On Fri, Jun 16, 2006 at 05:37:06PM +0200, Andi Kleen wrote: > > On Friday 16 June 2006 17:31, Zoltan Menyhart wrote: > > > Andi Kleen wrote: > > > > > > > That is not how user space TLS works. It usually has a base a register. > > > > > > Can you please give me a real life (simplified) example? > > > > On x86-64 it's just %fs:offset. gcc is a bit dumb on this and usually > > loads the base address from %fs:0 first. > > GCC is not dumb, unless you force it with -mno-tls-direct-seg-refs. > Guess you are bitten by SUSE GCC hack which makes -mno-tls-direct-seg-refs > the default (especially on x86-64 it is a really bad idea). I apparently got indeed. I wonder why it happened on x86-64 though - i thought there were no negative offsets on x86-64 TLS. -Andi - : send the line "unsubscribe linux-ia64" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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