From mboxrd@z Thu Jan 1 00:00:00 1970 From: Joerg Roedel Subject: Re: [PATCH 2/4] iommu/vt-d: Don't consider copied context entries as present Date: Thu, 11 Jun 2015 16:51:39 +0200 Message-ID: <20150611145138.GI20384@8bytes.org> References: <1434030463-942-1-git-send-email-joro@8bytes.org> <1434030463-942-3-git-send-email-joro@8bytes.org> <1434031622.3907.40.camel@infradead.org> <20150611142554.GG16345@suse.de> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline In-Reply-To: <20150611142554.GG16345-l3A5Bk7waGM@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org Errors-To: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org To: Joerg Roedel Cc: iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org, zhen-hual-VXdhtT5mjnY@public.gmane.org, David Woodhouse , linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, bhe-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org List-Id: iommu@lists.linux-foundation.org On Thu, Jun 11, 2015 at 04:25:54PM +0200, Joerg Roedel wrote: > Okay, reading the VT-d spec again, the extended context-entry table seem > to exist in parallel to the current context-entry table, right? So this > patch should still work, even with extended entries present. I found section 3.4.4. of the Spec, and learned that the two tables do not exist in parallel. The extended table ist just split into two parts because the context entry was doubled in size. Joerg