Am 08.02.2013 16:48, schrieb Will Deacon: > On Wed, Feb 06, 2013 at 11:01:23PM +0000, André Hentschel wrote: >> Am 06.02.2013 23:51, schrieb Russell King - ARM Linux: >>> On Wed, Feb 06, 2013 at 11:43:10PM +0100, André Hentschel wrote: >>>> There are more and more applications coming to WinRT, Wine could support them, >>>> but mostly they expect to have the thread environment block (TEB) in TPIDRURW. >>>> This register must be preserved per thread instead of being cleared. >>> >>> I'd prefer this was done a little more sensitively to those CPUs where >>> loads/stores are expensive, namely: >>> >>>> + >>>> + @ preserve TPIDRURW register state >>>> + get_tls2 r3, r4, r5 >>>> + str r3, [r1, #TI_TP2_VALUE] >>>> + ldr r3, [r2, #TI_TP2_VALUE] >>>> + set_tls2 r3, r4, r5 >>> >>> those two loads/stores get omitted from the thread switching if the CPU >>> doesn't support it. Do you think that's something you could do? >> >> No, i'm not sure how to improve this. How does the process can continue, can you or someone else fix that and add his Signed-off-by? > > How about something like the (completely untested) diff below? > > Andre: if this works for you, I'm happy to write a commit message etc. > > Cheers, > > Will > > --->8 I'll try the next days and report back, thx. -- Best Regards, André Hentschel -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html