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Re: [PATCH 0/2] kvm: clear dirty bitmaps from all overlapping memslots
From: |
Igor Mammedov |
Subject: |
Re: [PATCH 0/2] kvm: clear dirty bitmaps from all overlapping memslots |
Date: |
Fri, 20 Sep 2019 15:58:51 +0200 |
On Fri, 20 Sep 2019 20:19:51 +0800
Peter Xu <address@hidden> wrote:
> 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)
>
Thanks Peter,
I'll rebase on top of this series and do some more testing