From mboxrd@z Thu Jan 1 00:00:00 1970 From: Konrad Rzeszutek Wilk Subject: Re: [PATCH v2] VMX: don't allow PVH to reach handle_mmio() Date: Wed, 10 Dec 2014 12:08:42 -0500 Message-ID: <20141210170842.GL4268@laptop.dumpdata.com> References: <54857995020000780004DA2D@mail.emea.novell.com> <54872B02.50300@citrix.com> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Return-path: Received: from mail6.bemta4.messagelabs.com ([85.158.143.247]) by lists.xen.org with esmtp (Exim 4.72) (envelope-from ) id 1Xykkt-0001zF-Jm for xen-devel@lists.xenproject.org; Wed, 10 Dec 2014 17:08:51 +0000 Content-Disposition: inline In-Reply-To: <54872B02.50300@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: Roger Pau =?iso-8859-1?Q?Monn=E9?= Cc: Kevin Tian , Jan Beulich , Eddie Dong , Jun Nakajima , xen-devel List-Id: xen-devel@lists.xenproject.org On Tue, Dec 09, 2014 at 06:01:54PM +0100, Roger Pau Monn=E9 wrote: > El 08/12/14 a les 10.12, Jan Beulich ha escrit: > > PVH guests accessing I/O ports via string ops is not supported yet. > > = > > Reported-by: Roger Pau Monn=E9 > > Signed-off-by: Jan Beulich > = > This looks fine to me (at least it doesn't break the existing IN/OUT > users), and seems the best solution 4.5 wise: > = > Acked-by: Roger Pau Monn=E9 Release-Acked-by: Konrad Rzeszutek Wilk > = > For 4.6 I think we need to start using a different hvm_io_bitmap for PVH > Dom0 that allows direct access to the IO ports, bypassing the vmexit and > simplifying the code in Xen (this would also fix INS/OUTS). Still not > sure what should be done for PVH DomUs, specially when PVH gains support > for pci-passthrough. > = > Roger. > =