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Re: [PATCH v2 0/3] vhost: memslot handling improvements
From: |
Igor Mammedov |
Subject: |
Re: [PATCH v2 0/3] vhost: memslot handling improvements |
Date: |
Thu, 20 Apr 2023 16:28:05 +0200 |
On Thu, 16 Mar 2023 16:36:55 +0100
David Hildenbrand <david@redhat.com> wrote:
> Following up on my previous work to make virtio-mem consume multiple
> memslots dynamically [1] that requires precise accounting between used vs.
> reserved memslots, I realized that vhost makes this extra hard by
> filtering out some memory region sections (so they don't consume a
> memslot) in the vhost-user case, which messes up the whole memslot
> accounting.
>
> This series fixes what I found to be broken and prepares for more work on
> [1]. Further, it cleanes up the merge checks that I consider unnecessary.
Acked-by: Igor Mammedov <imammedo@redhat.com>
>
> [1] https://lkml.kernel.org/r/20211027124531.57561-8-david@redhat.com
>
> Cc: "Michael S. Tsirkin" <mst@redhat.com>
> Cc: Stefan Hajnoczi <stefanha@redhat.com>
> Cc: Dr. David Alan Gilbert <dgilbert@redhat.com>
> Cc: Igor Mammedov <imammedo@redhat.com>
>
> v1 -> v2:
> - "vhost: Rework memslot filtering and fix "used_memslot" tracking"
> -- New approach: keep filtering, but make filtering less generic and
> track separately. This should keep any existing setups working.
> - "softmmu/physmem: Fixup qemu_ram_block_from_host() documentation"
> -- As requested by Igor
>
> David Hildenbrand (3):
> vhost: Rework memslot filtering and fix "used_memslot" tracking
> vhost: Remove vhost_backend_can_merge() callback
> softmmu/physmem: Fixup qemu_ram_block_from_host() documentation
>
> hw/virtio/vhost-user.c | 21 ++---------
> hw/virtio/vhost-vdpa.c | 1 -
> hw/virtio/vhost.c | 62 ++++++++++++++++++++++++-------
> include/exec/cpu-common.h | 15 ++++++++
> include/hw/virtio/vhost-backend.h | 9 +----
> softmmu/physmem.c | 17 ---------
> 6 files changed, 68 insertions(+), 57 deletions(-)
>
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