Re: [Xen-devel] [PATCH 5/5] X86/vMCE: guest broken page handling when migration

[George Dunlap <George.Dunlap@xxxxxxxxxxxxx>]

On Wed, Oct 10, 2012 at 3:47 PM, Liu, Jinsong <jinsong.liu@xxxxxxxxx> wrote:
> X86/vMCE: guest broken page handling when migration
>
> This patch is used to handle guest broken page when migration.
>
> At sender, the broken page would not be mapped, and the error page
> content would not be copied to target, otherwise it may trigger more
> serious error (i.e. SRAR error). While its pfn_type and pfn number
> would be transferred to target so that target take appropriate action.
>
> At target, it would set p2m as p2m_ram_broken for broken page, so that
> if guest access the broken page again, it would kill guest as expected.
>
> Signed-off-by: Liu, Jinsong <jinsong.liu@xxxxxxxxx>

The changes to the save/restore code look correct to me; they
shouldn't break backwards-compatibility (i.e., migrating 4.2 -> 4.3).

(Save/restore algorithm) Acked-by: George Dunlap <george.dunlap@xxxxxxxxxxxxx>

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