On Fri, Sep 4, 2015 at 7:46 PM, Richard Henderson <r...@twiddle.net> wrote: > On 09/04/2015 08:18 AM, Max Filippov wrote: >> On Wed, Sep 2, 2015 at 5:21 PM, Richard Henderson <r...@twiddle.net> wrote: >>> git://github.com/rth7680/qemu.git tcg-search-2 >> >> That makes an impressive speedup for native kernel build on xtensa softmmu: >> down from 1240 minutes to 690. >> > > Yowza. Is xtensa a hardware or software managed tlb?
It's mixed: it can walk 2-level page tables automatically, but in linux second level of page tables is handled through exceptions. > I guess that's a data point for going ahead with this, supposing that I can > find the mips+sparc bugs I introduced. > > I recall xtensa being one of the trivial conversions. You didn't notice > anything odd/broken on your target, then? No, nothing obvious. I've taken a look at changes to generic code, they look good to me. -- Thanks. -- Max
