From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Vrabel Subject: Re: [PATCHv1 0/2] xen/grant-table: fix PV guests and remove V2 support Date: Fri, 4 Jul 2014 12:55:24 +0100 Message-ID: <53B6962C.4080805@citrix.com> References: <1404296729-23606-1-git-send-email-david.vrabel@citrix.com> <9AAE0902D5BC7E449B7C8E4E778ABCD03CB9C3@AMSPEX01CL01.citrite.net> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mail6.bemta3.messagelabs.com ([195.245.230.39]) by lists.xen.org with esmtp (Exim 4.72) (envelope-from ) id 1X325R-0008Mk-Oo for xen-devel@lists.xenproject.org; Fri, 04 Jul 2014 11:55:29 +0000 In-Reply-To: <9AAE0902D5BC7E449B7C8E4E778ABCD03CB9C3@AMSPEX01CL01.citrite.net> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Paul Durrant , "xen-devel@lists.xenproject.org" Cc: Boris Ostrovsky List-Id: xen-devel@lists.xenproject.org On 04/07/14 11:59, Paul Durrant wrote: >> -----Original Message----- >> From: xen-devel-bounces@lists.xen.org [mailto:xen-devel- >> bounces@lists.xen.org] On Behalf Of David Vrabel >> Sent: 02 July 2014 11:25 >> To: xen-devel@lists.xenproject.org >> Cc: Boris Ostrovsky; David Vrabel >> Subject: [Xen-devel] [PATCHv1 0/2] xen/grant-table: fix PV guests and >> remove V2 support >> >> The first patch fixes a logn standing issue where the map/unmap of >> grant table frames by PV guests was unsafe and could BUG() or have >> other bad behaviour. This was caused by calling function that were >> not permitted from atomic contexts. >> >> The second patch removes all V2 table code since it is unused. >> > > How confident are you of that assertion? This is removing the /Linux/ code which has been using V1 only for a while now. David