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Re: [PATCH v3] migration: clear the memory region dirty bitmap when skip
From: |
Peter Xu |
Subject: |
Re: [PATCH v3] migration: clear the memory region dirty bitmap when skipping free pages |
Date: |
Thu, 22 Jul 2021 10:51:00 -0400 |
On Thu, Jul 22, 2021 at 09:57:13AM +0000, Wang, Wei W wrote:
> On Thursday, July 22, 2021 5:48 PM, David Hildenbrand wrote:
> > On 22.07.21 10:30, Wei Wang wrote:
> > > When skipping free pages to send, their corresponding dirty bits in
> > > the memory region dirty bitmap need to be cleared. Otherwise the
> > > skipped pages will be sent in the next round after the migration
> > > thread syncs dirty bits from the memory region dirty bitmap.
> > >
> > > Cc: David Hildenbrand <david@redhat.com>
> > > Cc: Peter Xu <peterx@redhat.com>
> > > Cc: Michael S. Tsirkin <mst@redhat.com>
> > > Reported-by: David Hildenbrand <david@redhat.com>
> > > Signed-off-by: Wei Wang <wei.w.wang@intel.com>
> > > ---
> > > migration/ram.c | 74
> > +++++++++++++++++++++++++++++++++++++------------
> > > 1 file changed, 56 insertions(+), 18 deletions(-)
> > >
> >
> > LGTM, thanks
> >
> > Reviewed-by: David Hildenbrand <david@redhat.com>
> >
>
> Thanks. Please remember to have a regression test together with Peterx's that
> patch when you get a chance.
I can continue to try that; but it's slightly low priority to me so it could be
a bit delayed. If either of you could help that would be great, as I still
don't know last time why I didn't use free-page-hint right (note: I definitely
checked lsmod for sure; so it's there). So I'll need to figure that out first.
Thanks,
--
Peter Xu
- [PATCH v3] migration: clear the memory region dirty bitmap when skipping free pages, Wei Wang, 2021/07/22
- Re: [PATCH v3] migration: clear the memory region dirty bitmap when skipping free pages, David Hildenbrand, 2021/07/22
- RE: [PATCH v3] migration: clear the memory region dirty bitmap when skipping free pages, Wang, Wei W, 2021/07/22
- Re: [PATCH v3] migration: clear the memory region dirty bitmap when skipping free pages,
Peter Xu <=
- Re: [PATCH v3] migration: clear the memory region dirty bitmap when skipping free pages, David Hildenbrand, 2021/07/22
- Re: [PATCH v3] migration: clear the memory region dirty bitmap when skipping free pages, Peter Xu, 2021/07/22
- Re: [PATCH v3] migration: clear the memory region dirty bitmap when skipping free pages, David Hildenbrand, 2021/07/23
- RE: [PATCH v3] migration: clear the memory region dirty bitmap when skipping free pages, Wang, Wei W, 2021/07/23
- Re: [PATCH v3] migration: clear the memory region dirty bitmap when skipping free pages, David Hildenbrand, 2021/07/23
- RE: [PATCH v3] migration: clear the memory region dirty bitmap when skipping free pages, Wang, Wei W, 2021/07/23
- Re: [PATCH v3] migration: clear the memory region dirty bitmap when skipping free pages, Peter Xu, 2021/07/23
- Re: [PATCH v3] migration: clear the memory region dirty bitmap when skipping free pages, David Hildenbrand, 2021/07/23
- Re: [PATCH v3] migration: clear the memory region dirty bitmap when skipping free pages, David Hildenbrand, 2021/07/23