On 05.01.23 22:11, Peter Xu wrote:
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 <[email protected]> (maintainer:Migration)
Cc: "Dr. David Alan Gilbert" <[email protected]> (maintainer:Migration)
Cc: Peter Xu <[email protected]>
Cc: Andrey Gruzdev <[email protected]>
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 <[email protected]>
Thanks!
--
Thanks,
David / dhildenb
