On Tue, Mar 12, 2013 at 02:06:22PM +0200, Gleb Natapov wrote:
> On Tue, Mar 12, 2013 at 05:45:30PM +0900, Takuya Yoshikawa wrote:
> > When we create or move a memory slot, we need to zap mmio sptes.
> > Currently, zap_all() is used for this and this is causing two problems:
> > - extra page faults
On Tue, Mar 12, 2013 at 05:45:30PM +0900, Takuya Yoshikawa wrote:
> When we create or move a memory slot, we need to zap mmio sptes.
> Currently, zap_all() is used for this and this is causing two problems:
> - extra page faults after zapping mmu pages
> - long mmu_lock hold time during zapping m
When we create or move a memory slot, we need to zap mmio sptes.
Currently, zap_all() is used for this and this is causing two problems:
- extra page faults after zapping mmu pages
- long mmu_lock hold time during zapping mmu pages
For the latter, Marcelo reported a disastrous mmu_lock hold time
