From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Cooper Subject: Re: [PATCH 1/5] x86emul: fix rIP handling Date: Wed, 17 Feb 2016 17:51:48 +0000 Message-ID: <56C4B334.5010704@citrix.com> References: <56C4AC2802000078000D3473@prv-mh.provo.novell.com> <56C4AEA502000078000D348C@prv-mh.provo.novell.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mail6.bemta14.messagelabs.com ([193.109.254.103]) by lists.xen.org with esmtp (Exim 4.72) (envelope-from ) id 1aW6GW-0004Ti-9U for xen-devel@lists.xenproject.org; Wed, 17 Feb 2016 17:51:52 +0000 In-Reply-To: <56C4AEA502000078000D348C@prv-mh.provo.novell.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: Jan Beulich , xen-devel Cc: Keir Fraser List-Id: xen-devel@lists.xenproject.org On 17/02/16 16:32, Jan Beulich wrote: > Deal with rIP just like with any other register: Truncate to designated > width upon entry, write back the zero-extended 32-bit value when > emulating 32-bit code, and leave the upper 48 bits unchanged for 16-bit > code. > > Signed-off-by: Jan Beulich Reviewed-by: Andrew Cooper