 Home |
Products |
Support |
Community |
News |
xen-devel
Re: [Xen-devel] conditional clearing of dom0_l2 in i386's zap_low_mappin
| To: | Jan Beulich <JBeulich@xxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] conditional clearing of dom0_l2 in i386's zap_low_mappings() ? |
| From: | Keir Fraser <keir@xxxxxxx> |
| Date: | Thu, 28 Oct 2010 17:06:14 +0100 |
| Cc: | "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx> |
| Delivery-date: | Thu, 28 Oct 2010 09:07:52 -0700 |
| Dkim-signature: | v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:sender:user-agent:date :subject:from:to:cc:message-id:thread-topic:thread-index:in-reply-to :mime-version:content-type:content-transfer-encoding; bh=JQR1c3X/12mMGDdDAHePKHYCuRRt/orOW61S3jBn2qY=; b=XULy2bOzeqmsblhziH6o1W7zcFxS79ipfZK1dQ7AemdmXJb2fohZ8+yTFfMM5InN8K dpDQgvYgbgTPm2re4K7rz1frfrK1L+Erwe2lg7G10+crwOvXsbcHCtIxZMDGpWKq2VSO YpjGpUarUgibtA99HbOXDYAlDgDd+oA4NiAgo= |
| Domainkey-signature: | a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=sender:user-agent:date:subject:from:to:cc:message-id:thread-topic :thread-index:in-reply-to:mime-version:content-type :content-transfer-encoding; b=bG6aGXpObA58Bg5ucUpPqSBbht9W7cxp+KZ6nvcBRrstNMrXO+dS0SbXLi6T3r6cMY y0za5f0L9eCW6pQSvOe9GQeadwAK7x9PnQA4aWNF0BrCz7aVkgY/dFZ9Qz5pkXggcgLu Zigovzcv9nl07A8x4ihnCYDgQ57LqgppBmUnI= |
| Envelope-to: | www-data@xxxxxxxxxxxxxxxxxxx |
| In-reply-to: | <4CC9B79B020000780001FCB8@xxxxxxxxxxxxxxxxxx> |
| List-help: | <mailto:xen-devel-request@lists.xensource.com?subject=help> |
| List-id: | Xen developer discussion <xen-devel.lists.xensource.com> |
| List-post: | <mailto:xen-devel@lists.xensource.com> |
| List-subscribe: | <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe> |
| List-unsubscribe: | <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe> |
| Sender: | xen-devel-bounces@xxxxxxxxxxxxxxxxxxx |
| Thread-index: | Act2uguNIp8U1GNbjEmhiwE+sK0tMQ== |
| Thread-topic: | [Xen-devel] conditional clearing of dom0_l2 in i386's zap_low_mappings() ? |
| User-agent: | Microsoft-Entourage/12.27.0.100910 |
On 28/10/2010 16:49, "Jan Beulich" <JBeulich@xxxxxxxxxx> wrote: >>>> 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. Oh I see. Well possibly. But you might still need the conditional for the other three slots anyway, so it wouldn't be a simplification in that case. -- Keir > Jan > _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
| <Prev in Thread] | Current Thread | [Next in Thread> |
|---|---|---|
| ||
| Previous by Date: | [Xen-devel] RE: [RFC][PATCH][VTD][v4] consolidate VT-d quirks into a single file quirks.c, Jan Beulich |
|---|---|
| Next by Date: | Re: [Xen-devel] [Patch 2/4] Refining Xsave/Xrestore support, Jeremy Fitzhardinge |
| Previous by Thread: | Re: [Xen-devel] conditional clearing of dom0_l2 in i386's zap_low_mappings() ?, Jan Beulich |
| Next by Thread: | Re: [Xen-devel] conditional clearing of dom0_l2 in i386's zap_low_mappings() ?, Jan Beulich |
| Indexes: | [Date] [Thread] [Top] [All Lists] |
