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[PATCH v1 0/5] migration/ram: background snapshot fixes and optimiations
From: |
David Hildenbrand |
Subject: |
[PATCH v1 0/5] migration/ram: background snapshot fixes and optimiations |
Date: |
Thu, 5 Jan 2023 13:45:23 +0100 |
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
migration/ram.c | 54 ++++++++++++++++++++++++++++++++++++-------------
1 file changed, 40 insertions(+), 14 deletions(-)
--
2.39.0
- [PATCH v1 0/5] migration/ram: background snapshot fixes and optimiations,
David Hildenbrand <=
- [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, 2023/01/05
- Re: [PATCH v1 0/5] migration/ram: background snapshot fixes and optimiations, David Hildenbrand, 2023/01/23