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Re: [PATCH v2 fixed 13/16] numa: Teach ram block notifiers about resizab
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From: |
Paul Durrant |
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Subject: |
Re: [PATCH v2 fixed 13/16] numa: Teach ram block notifiers about resizable ram blocks |
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Date: |
Thu, 13 Feb 2020 13:41:48 +0100 |
On Wed, 12 Feb 2020 at 14:44, David Hildenbrand <address@hidden> wrote:
>
> We want to actually resize ram blocks (make everything between
> used_length and max_length inaccessible) - however, not all ram block
> notifiers will support that. Let's teach the notifier that ram blocks
> are indeed resizable, but keep using max_size in the existing notifiers.
>
> Supply the max_size when adding and removing ram blocks. Also, notify on
> resizes. Introduce a way to detect if any registered notifier does not
> support resizes - ram_block_notifiers_support_resize() - which we can later
> use to fallback to legacy handling if a registered notifier (esp., SEV and
> HAX) does not support actual resizes.
>
> Cc: Richard Henderson <address@hidden>
> Cc: Paolo Bonzini <address@hidden>
> Cc: "Dr. David Alan Gilbert" <address@hidden>
> Cc: Eduardo Habkost <address@hidden>
> Cc: Marcel Apfelbaum <address@hidden>
> Cc: Stefano Stabellini <address@hidden>
> Cc: Anthony Perard <address@hidden>
> Cc: Paul Durrant <address@hidden>
> Cc: "Michael S. Tsirkin" <address@hidden>
> Cc: address@hidden
> Cc: Igor Mammedov <address@hidden>
> Signed-off-by: David Hildenbrand <address@hidden>
Xen parts...
Acked-by: Paul Durrant <address@hidden>
- [PATCH v2 fixed 04/16] util: vfio-helpers: Factor out removal from qemu_vfio_undo_mapping(), (continued)
- [PATCH v2 fixed 04/16] util: vfio-helpers: Factor out removal from qemu_vfio_undo_mapping(), David Hildenbrand, 2020/02/12
- [PATCH v2 fixed 06/16] exec: Reuse qemu_ram_apply_settings() in qemu_ram_remap(), David Hildenbrand, 2020/02/12
- [PATCH v2 fixed 05/16] exec: Factor out setting ram settings (madvise ...) into qemu_ram_apply_settings(), David Hildenbrand, 2020/02/12
- [PATCH v2 fixed 07/16] exec: Drop "shared" parameter from ram_block_add(), David Hildenbrand, 2020/02/12
- [PATCH v2 fixed 08/16] util/mmap-alloc: Factor out calculation of pagesize to mmap_pagesize(), David Hildenbrand, 2020/02/12
- [PATCH v2 fixed 09/16] util/mmap-alloc: Factor out reserving of a memory region to mmap_reserve(), David Hildenbrand, 2020/02/12
- [PATCH v2 fixed 10/16] util/mmap-alloc: Factor out populating of memory to mmap_populate(), David Hildenbrand, 2020/02/12
- [PATCH v2 fixed 11/16] util/mmap-alloc: Prepare for resizable mmaps, David Hildenbrand, 2020/02/12
- [PATCH v2 fixed 12/16] util/mmap-alloc: Implement resizable mmaps, David Hildenbrand, 2020/02/12
- [PATCH v2 fixed 13/16] numa: Teach ram block notifiers about resizable ram blocks, David Hildenbrand, 2020/02/12
- Re: [PATCH v2 fixed 13/16] numa: Teach ram block notifiers about resizable ram blocks,
Paul Durrant <=
- [PATCH v2 fixed 14/16] util: vfio-helpers: Implement ram_block_resized(), David Hildenbrand, 2020/02/12
- [PATCH v2 fixed 15/16] util: oslib: Resizable anonymous allocations under POSIX, David Hildenbrand, 2020/02/12
- [PATCH v2 fixed 16/16] exec: Ram blocks with resizable anonymous allocations under POSIX, David Hildenbrand, 2020/02/12
- Re: [PATCH v2 fixed 00/16] Ram blocks with resizable anonymous allocations under POSIX, David Hildenbrand, 2020/02/12