Re: [Qemu-devel] [PATCH V5 4/9] migration: split ufd_version_check onto receive/request features part

2017-05-19 Thread Dr. David Alan Gilbert
* Alexey (a.pereva...@samsung.com) wrote: > On Tue, May 16, 2017 at 11:32:51AM +0100, Dr. David Alan Gilbert wrote: > > * Alexey Perevalov (a.pereva...@samsung.com) wrote: > > > This modification is necessary for userfault fd features which are > > > required to be requested from userspace. > > >

Re: [Qemu-devel] [PATCH V5 4/9] migration: split ufd_version_check onto receive/request features part

2017-05-18 Thread Alexey
On Tue, May 16, 2017 at 11:32:51AM +0100, Dr. David Alan Gilbert wrote: > * Alexey Perevalov (a.pereva...@samsung.com) wrote: > > This modification is necessary for userfault fd features which are > > required to be requested from userspace. > > UFFD_FEATURE_THREAD_ID is a one of such "on demand"

Re: [Qemu-devel] [PATCH V5 4/9] migration: split ufd_version_check onto receive/request features part

2017-05-16 Thread Dr. David Alan Gilbert
* Alexey Perevalov (a.pereva...@samsung.com) wrote: > This modification is necessary for userfault fd features which are > required to be requested from userspace. > UFFD_FEATURE_THREAD_ID is a one of such "on demand" feature, which will > be introduced in the next patch. > > QEMU need to use

[Qemu-devel] [PATCH V5 4/9] migration: split ufd_version_check onto receive/request features part

2017-05-12 Thread Alexey Perevalov
This modification is necessary for userfault fd features which are required to be requested from userspace. UFFD_FEATURE_THREAD_ID is a one of such "on demand" feature, which will be introduced in the next patch. QEMU need to use separate userfault file descriptor, due to userfault context has