On Thu, 5 Sep 2019 15:25:31 +0000 Christophe Leroy <christophe.le...@c-s.fr> wrote:
> On 09/05/2019 12:35 PM, Nicholas Piggin wrote: > > System call entry and particularly exit code is beyond the limit of what > > is reasonable to implement in asm. > > > > This conversion moves all conditional branches out of the asm code, > > except for the case that all GPRs should be restored at exit. > > > > Null syscall test is about 5% faster after this patch, because the exit > > work is handled under local_irq_disable, and the hard mask and pending > > interrupt replay is handled after that, which avoids games with MSR. > > > > Signed-off-by: Nicholas Piggin <npig...@gmail.com> > > Cannot apply it on latest powerpc/merge. On what does that apply ? The v2 series had 4 patches so presumably the previous 3 are missing here. Thanks Michal
