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Re: [PATCH v1 0/5] migration/ram: background snapshot fixes and optimiat
From: |
Peter Xu |
Subject: |
Re: [PATCH v1 0/5] migration/ram: background snapshot fixes and optimiations |
Date: |
Thu, 5 Jan 2023 16:11:57 -0500 |
On Thu, Jan 05, 2023 at 01:45:23PM +0100, David Hildenbrand wrote:
> Playing with background snapshots in combination with hugetlb and
> virtio-mem, I found two issues and some reasonable optimizations (skip
> unprotecting when unregistering).
>
> With virtio-mem (RamDiscardManager), we now won't be allocating unnecessary
> page tables for unplugged ranges when using uffd-wp with shmem/hugetlb.
>
> Cc: Juan Quintela <quintela@redhat.com> (maintainer:Migration)
> Cc: "Dr. David Alan Gilbert" <dgilbert@redhat.com> (maintainer:Migration)
> Cc: Peter Xu <peterx@redhat.com>
> Cc: Andrey Gruzdev <andrey.gruzdev@virtuozzo.com>
>
> David Hildenbrand (5):
> migration/ram: Fix populate_read_range()
> migration/ram: Fix error handling in ram_write_tracking_start()
> migration/ram: Don't explicitly unprotect when unregistering uffd-wp
> migration/ram: Rely on used_length for uffd_change_protection()
> migration/ram: Optimize ram_write_tracking_start() for
> RamDiscardManager
For the series:
Acked-by: Peter Xu <peterx@redhat.com>
Thanks,
--
Peter Xu
- [PATCH v1 0/5] migration/ram: background snapshot fixes and optimiations, David Hildenbrand, 2023/01/05
- [PATCH v1 1/5] migration/ram: Fix populate_read_range(), David Hildenbrand, 2023/01/05
- [PATCH v1 4/5] migration/ram: Rely on used_length for uffd_change_protection(), David Hildenbrand, 2023/01/05
- [PATCH v1 2/5] migration/ram: Fix error handling in ram_write_tracking_start(), David Hildenbrand, 2023/01/05
- [PATCH v1 3/5] migration/ram: Don't explicitly unprotect when unregistering uffd-wp, David Hildenbrand, 2023/01/05
- [PATCH v1 5/5] migration/ram: Optimize ram_write_tracking_start() for RamDiscardManager, David Hildenbrand, 2023/01/05
- Re: [PATCH v1 0/5] migration/ram: background snapshot fixes and optimiations,
Peter Xu <=
- Re: [PATCH v1 0/5] migration/ram: background snapshot fixes and optimiations, David Hildenbrand, 2023/01/23