Re: [PATCH v4 0/4] softmmu/memory_mapping: optimize dump/tpm for virtio-mem

[David Hildenbrand]

On 02.10.21 11:55, Paolo Bonzini wrote:
> On 27/07/21 10:25, David Hildenbrand wrote:
> > Minor fixes and cleanups, followed by an optimization for virtio-mem
> > regarding guest dumps and tpm.
> >
> > virtio-mem logically plugs/unplugs memory within a sparse memory region
> > and notifies via the RamDiscardMgr interface when parts become
> > plugged (populated) or unplugged (discarded).
> >
> > Currently, guest_phys_blocks_append() appends the whole (sparse)
> > virtio-mem managed region and therefore tpm code might zero the hole
> > region and dump code will dump the whole region. Let's only add logically
> > plugged (populated) parts of that region, skipping over logically
> > unplugged (discarded) parts by reusing the RamDiscardMgr infrastructure
> > introduced to handle virtio-mem + VFIO properly.
>
> Queued, thanks.

Thanks Paolo!

--
Thanks,

David / dhildenb