Re: [Xen-devel] [PATCH 1/4] hvm: NUMA guest: extend memops hyper

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To:	Andre Przywara <andre.przywara@xxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject:	Re: [Xen-devel] [PATCH 1/4] hvm: NUMA guest: extend memops hypercall
From:	Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
Date:	Fri, 04 Jul 2008 10:52:47 +0100
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On 4/7/08 08:57, "Andre Przywara" <andre.przywara@xxxxxxx> wrote:

> This patch extends the memops hypercall in a compatible way to transport
> a desired NUMA node number. The address_bits field will be limited to 8
> bits and is now embedded in the mem_flags member, which additionally
> contains the node number (limited to 8 bit). Passing a node number of
> '0' (currently the default) will revert to automatic node selection
> (based on currently scheduled node).
> 
> Signed-off-by: Andre Przywara <andre.przywara@xxxxxxx>

Should unprivileged domUs be allowed to specify the NUMA node they allocate
from, regardless of whether they even run there? Seems like a breakage of
guest isolation to me.

 -- Keir



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