On Thu, Jul 08, 2010 at 12:28:18AM -0400, Rik van Riel wrote: > On 07/06/2010 12:24 PM, Gleb Natapov wrote: > >If guest can detect that it runs in non-preemptable context it can > >handle async PFs at any time, so let host know that it can send async > >PF even if guest cpu is not in userspace. > > The code looks correct. One question though - is there a > reason to implement the userspace-only async PF path at > all, since the handling of async PF in non-userspace context > is introduced simultaneously? > Guest userspace-only async PF handling is added in patch 4 and non-userspace is added in patch 10. It is done for easy reviewing. If I implement everything in one patch it will be harder to see why things are done the way they are IMHO. -- Gleb. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>