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Re: [Xen-devel] Live migration fails under heavy network use

To: Ian Pratt <m+Ian.Pratt@xxxxxxxxxxxx>, John Levon <levon@xxxxxxxxxxxxxxxxx>
Subject: Re: [Xen-devel] Live migration fails under heavy network use
From: Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>
Date: Wed, 21 Feb 2007 00:06:52 +0000
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On 20/2/07 23:48, "Ian Pratt" <m+Ian.Pratt@xxxxxxxxxxxx> wrote:

> Urk. Checkout line 204 of privcmd.c
> That doesn't look too 64b clean to me....

Should be good for 1TB of memory. Also the subsequent get_pfn_type_batch
hypercall takes an array of 32-bit values, so the type/error nibble has to
be at the top of 32 bits rather than 64 bits.

> The top nibble is supposed to be set if its not possible to map the
> frame correctly. This will be propagated through the
> xc_get_pfn_type_batch call, hence skipping the frame.

That's the theory. :-)

 -- Keir



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