On Tue, Aug 25, 2015 at 4:25 PM, Richard Henderson <r...@twiddle.net> wrote: > On 08/24/2015 11:44 PM, Artyom Tarasenko wrote: >> >> This is very surprising: the patch should have no effect on a sun4u >> machine. > > > Er, no, it should. The primary vector by which I expect improvement is via > not encoding dmmu.mmu_primary_context into the TB flags. I.e. ASI_DMMU, > which sun4u certainly uses. > > The fact that the patch _also_ fixes a sun4v problem is secondary.
Sorry, my bad, I haven't noticed that. Applied it on top of the tcg-indirect branch, but see no measurable impact: my reference g++ run still takes ~ 17 minutes. Artyom -- Regards, Artyom Tarasenko SPARC and PPC PReP under qemu blog: http://tyom.blogspot.com/search/label/qemu
