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Re: [PATCH 0/2] kvm: clear dirty bitmaps from all overlapping memslots
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From: |
Peter Xu |
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Subject: |
Re: [PATCH 0/2] kvm: clear dirty bitmaps from all overlapping memslots |
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Date: |
Fri, 20 Sep 2019 20:19:51 +0800 |
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User-agent: |
Mutt/1.11.4 (2019-03-13) |
On Fri, Sep 20, 2019 at 12:21:20PM +0200, Paolo Bonzini wrote:
> A single ram_addr (representing a host-virtual address) could be aliased
> to multiple guest physical addresses. Since the KVM dirty page reporting
> works on guest physical addresses, we need to clear all of the aliases
> when a page is migrated, or there is a risk of losing writes to the
> aliases that were not cleared.
(CCing Igor too so Igor would be aware of these changes that might
conflict with the recent memslot split work)
--
Peter Xu