From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Cooper Subject: Re: [RFC PATCH 3/3] remus: adjust x86 pv restore to support remus Date: Wed, 9 Jul 2014 12:26:24 +0100 Message-ID: <53BD26E0.9030406@citrix.com> References: <1404892050-24650-1-git-send-email-yanghy@cn.fujitsu.com> <1404892050-24650-4-git-send-email-yanghy@cn.fujitsu.com> <53BD2477.1070505@citrix.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <53BD2477.1070505@citrix.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Yang Hongyang , xen-devel@lists.xen.org Cc: rshriram@cs.ubc.ca, Ian.Jackson@eu.citrix.com, Ian.Campbell@citrix.com List-Id: xen-devel@lists.xenproject.org On 09/07/14 12:16, Andrew Cooper wrote: > On 09/07/14 08:47, Yang Hongyang wrote: >> cache vcpu context when restore, and set context when stream >> complete. > Can you explain why this is needed? I can't see why it should be required. Actually, as part of reviewing this I have worked out why this is needed. It is a latent bug in the migration v2 series with all the x86 pv vcpu state (not just the basic state), which is not triggered by a well behaved sender. I shall fix it up in the base series. ~Andrew