On Thu, Jul 11, 2013 at 12:41:37PM +0200, Christian Borntraeger wrote: > On 11/07/13 11:04, Gleb Natapov wrote: > > On Wed, Jul 10, 2013 at 02:59:55PM +0200, Dominik Dingel wrote: > >> This patch enables async page faults for s390 kvm guests. > >> It provides the userspace API to enable, disable or get the status of this > >> feature. Also it includes the diagnose code, called by the guest to enable > >> async page faults. > >> > >> The async page faults will use an already existing guest interface for this > >> purpose, as described in "CP Programming Services (SC24-6084)". > >> > >> Signed-off-by: Dominik Dingel <dingel@xxxxxxxxxxxxxxxxxx> > > Christian, looks good now? > > Looks good, but I just had a discussion with Dominik about several other cases > (guest driven reboot, qemu driven reboot, life migration). This patch should > allow all these cases (independent from this patch we need an ioctl to flush the > list of pending interrupts to do so, but reboot is currently broken in that > regard anyway - patch is currently being looked at) > > We are currently discussion if we should get rid of the APF_STATUS and let > the kernel wait for outstanding page faults before returning from KVM_RUN > or if we go with this patch and let userspace wait for completion. > > Will discuss this with Dominik, Conny and Alex. So lets defer that till next > week, ok? > Sure. -- Gleb. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>