[Top] [All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Xen-devel] conditional clearing of dom0_l2 in i386's zap_low_mappings() ?

  • To: Jan Beulich <JBeulich@xxxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>
  • From: Keir Fraser <keir@xxxxxxx>
  • Date: Thu, 28 Oct 2010 16:30:34 +0100
  • Cc:
  • Delivery-date: Thu, 28 Oct 2010 08:31:41 -0700
  • Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=sender:user-agent:date:subject:from:to:message-id:thread-topic :thread-index:in-reply-to:mime-version:content-type :content-transfer-encoding; b=qspofVdQrX3lt4sT9IJVbE/2Uj+lXeD45ePfKwF8fOzgEJbAvzZISgLQA+ciwl7u/U 8OGzlLi51iPCyVsPTP7IPFXz/r6TMUKUXqScAFIghesDS/bFPwCys8qy0S/XWb29jFme DOsOEmsopsXWinBFG0MwFDgW19jR8Wqb8LiSE=
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
  • Thread-index: Act2tRADx/ZMOI0CqUO1dmxREJr4XQ==
  • Thread-topic: [Xen-devel] conditional clearing of dom0_l2 in i386's zap_low_mappings() ?
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!

 -- Keir

> Thanks, Jan
> 
> 
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-devel



_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel

 

©2013 Xen Project, A Linux Foundation Collaborative Project. All Rights Reserved.
Linux Foundation is a registered trademark of The Linux Foundation.
Xen Project is a trademark of The Linux Foundation.

Rackspace

Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.