From mboxrd@z Thu Jan 1 00:00:00 1970 From: Kip Macy Subject: Re: garbage registers when domain killed by xen Date: Sat, 7 May 2005 07:10:54 -0700 Message-ID: References: <1bea7043d407c09e23b119c6c278dbe3@cl.cam.ac.uk> Reply-To: Kip Macy Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: <1bea7043d407c09e23b119c6c278dbe3@cl.cam.ac.uk> Content-Disposition: inline List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Keir Fraser Cc: xen-devel List-Id: xen-devel@lists.xenproject.org I'm not sure about ecx/edx but I know eip is bad. There are legitimate cases of trying to call a null function pointer, but I know from the context that that isn't the case. It appears to be a page fault - but I don't have trap handlers installed yet. -Kip On 5/7/05, Keir Fraser wrote: >=20 > On 7 May 2005, at 02:26, Kip Macy wrote: >=20 > > Is it really necessary for xen to overwrite part of a domain's context > > on a fatal trap? >=20 > Which ones are overwritten -- ecx/edx? I'm not sure how that could > happen but it's clearly a bug rather than intentional. >=20 > -- Keir >=20 >