Re: [Xen-devel] [PATCH 3 of 3] PoD, hap: Fix logdirty mode when using hardware assisted paging

[Tim Deegan <Tim.Deegan@xxxxxxxxxx>]

At 14:36 +0000 on 17 Jan (1295274995), George Dunlap wrote:
> PoD,hap: Fix logdirty mode when using hardware assisted paging
> 
> When writing a writable p2m entry for a pfn, we need to mark the pfn
> dirty to avoid corruption when doing live migration.
> 
> Marking the page dirty exposes another issue, where there are
> excessive sweeps for zero pages if there's a mismatch between PoD
> entries and cache entries.  Only sweep for zero pages if we actually
> need more memory.

Applied, thanks.

Tim.

-- 
Tim Deegan <Tim.Deegan@xxxxxxxxxx>
Principal Software Engineer, Xen Platform Team
Citrix Systems UK Ltd.  (Company #02937203, SL9 0BG)

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