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Re: [Xen-devel] conditional clearing of dom0_l2 in i386's zap_low_mappin

To: "Keir Fraser" <keir@xxxxxxx>
Subject: Re: [Xen-devel] conditional clearing of dom0_l2 in i386's zap_low_mappings() ?
From: "Jan Beulich" <JBeulich@xxxxxxxxxx>
Date: Thu, 28 Oct 2010 16:49:15 +0100
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>>> On 28.10.10 at 17:30, Keir Fraser <keir@xxxxxxx> wrote:
> On 28/10/2010 15:50, "Jan Beulich" <JBeulich@xxxxxxxxxx> wrote:
>> What is the reason for not unconditionally clearing the whole L2
>> directory here? There shouldn't be anything in the first Gb that
>> wasn't placed there just temporarily by Xen...
> You mean the conditional within the for loop that clears dom0 l2 entries? If
> we zapped all of dom0's l2 entries, we'd also be zapping the entries
> legitimately just created by the dom0 builder!

Oh, I didn't look closely enough. I actually just meant all the
entries in the first of the four L2 tables.


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