Re: [Qemu-devel] Dual userfaultfd behavior

2017-04-10 Thread Alexey Perevalov
Hello, On 03/18/2017 02:27 AM, Mike Kravetz wrote: On 03/15/2017 06:47 AM, Alexey Perevalov wrote: Hi Andrea, thank you for so perfect design description, the main question who will do RFC patches, you or Mike or if you not against I could try. Sorry for not replying sooner, I have been aw

Re: [Qemu-devel] Dual userfaultfd behavior

2017-03-17 Thread Mike Kravetz
On 03/15/2017 06:47 AM, Alexey Perevalov wrote: > Hi Andrea, > > thank you for so perfect design description, > > the main question who will do RFC patches, > you or Mike or if you not against I could try. Sorry for not replying sooner, I have been away from e-mail. I have some other projects w

Re: [Qemu-devel] Dual userfaultfd behavior

2017-03-15 Thread Alexey Perevalov
Hi Andrea, thank you for so perfect design description, the main question who will do RFC patches, you or Mike or if you not against I could try. On 03/14/2017 12:46 AM, Andrea Arcangeli wrote: Hello, On Mon, Mar 13, 2017 at 10:53:39AM +, Dr. David Alan Gilbert wrote: * Alexey Perevalov

Re: [Qemu-devel] Dual userfaultfd behavior

2017-03-13 Thread Andrea Arcangeli
Hello, On Mon, Mar 13, 2017 at 10:53:39AM +, Dr. David Alan Gilbert wrote: > * Alexey Perevalov (a.pereva...@samsung.com) wrote: > > Hi, David, Andrea and Mike > > Hi Alexey, > > > The problem I want to discuss it's 1G hugepage based VM and post copy live > > migration. > > > > I would like

Re: [Qemu-devel] Dual userfaultfd behavior

2017-03-13 Thread Dr. David Alan Gilbert
* Alexey Perevalov (a.pereva...@samsung.com) wrote: > Hi, David, Andrea and Mike Hi Alexey, > The problem I want to discuss it's 1G hugepage based VM and post copy live > migration. > > I would like to know your opinion on following approach of avoiding such > problem: > Once we have mmap'ed are

[Qemu-devel] Dual userfaultfd behavior

2017-03-10 Thread Alexey Perevalov
Hi, David, Andrea and Mike The problem I want to discuss it's 1G hugepage based VM and post copy live migration. I would like to know your opinion on following approach of avoiding such problem: Once we have mmap'ed area through 1G hugetlbfs, remap physical pages with /dev/mem. It will be 2 types