From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:45169) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1b5b71-0005Wb-Tc for qemu-devel@nongnu.org; Wed, 25 May 2016 11:52:48 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1b5b6w-000703-J1 for qemu-devel@nongnu.org; Wed, 25 May 2016 11:52:46 -0400 Received: from smtp02.citrix.com ([66.165.176.63]:20909) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1b5b6w-0006xN-Bd for qemu-devel@nongnu.org; Wed, 25 May 2016 11:52:42 -0400 Date: Wed, 25 May 2016 16:52:32 +0100 From: Anthony PERARD Message-ID: <20160525155232.GD1184@perard.uk.xensource.com> References: <1462811480-16295-1-git-send-email-paul.durrant@citrix.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <1462811480-16295-1-git-send-email-paul.durrant@citrix.com> Subject: Re: [Qemu-devel] [PATCH v3] xen-hvm: ignore background I/O sections List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Paul Durrant Cc: qemu-devel@nongnu.org, xen-devel@lists.xenproject.org, Stefano Stabellini , Paolo Bonzini On Mon, May 09, 2016 at 05:31:20PM +0100, Paul Durrant wrote: > Since Xen will correctly handle accesses to unimplemented I/O ports (by > returning all 1's for reads and ignoring writes) there is no need for > QEMU to register backgroud I/O sections. > > This patch therefore adds checks to xen_io_add/del so that sections with > memory-region ops pointing at 'unassigned_io_ops' are ignored. > > Signed-off-by: Paul Durrant > Cc: Stefano Stabellini > Cc: Anthony Perard > Cc: Paolo Bonzini Acked-by: Anthony PERARD -- Anthony PERARD