From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Jan Beulich" <JBeulich@suse.com>
Subject: Re: [PATCH for-4.12] passthrough/vtd: Drop the
 "workaround_bios_bug" logic entirely
Date: Wed, 27 Mar 2019 05:46:38 -0600
Message-ID: <5C9B629E02000078002221BA@prv1-mh.provo.novell.com>
References: <1553199980-9849-1-git-send-email-andrew.cooper3@citrix.com>
 <5C98F2A50200007800221B22@prv1-mh.provo.novell.com>
 <14c89679-75b6-9a5d-b80a-8e28bcc795cb@citrix.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: base64
Return-path: <xen-devel-bounces@lists.xenproject.org>
In-Reply-To: <14c89679-75b6-9a5d-b80a-8e28bcc795cb@citrix.com>
Content-Disposition: inline
List-Unsubscribe: <https://lists.xenproject.org/mailman/options/xen-devel>,
 <mailto:xen-devel-request@lists.xenproject.org?subject=unsubscribe>
List-Post: <mailto:xen-devel@lists.xenproject.org>
List-Help: <mailto:xen-devel-request@lists.xenproject.org?subject=help>
List-Subscribe: <https://lists.xenproject.org/mailman/listinfo/xen-devel>,
 <mailto:xen-devel-request@lists.xenproject.org?subject=subscribe>
Errors-To: xen-devel-bounces@lists.xenproject.org
Sender: "Xen-devel" <xen-devel-bounces@lists.xenproject.org>
To: george.dunlap@citrix.com
Cc: Juergen Gross <jgross@suse.com>, Igor Druzhinin <igor.druzhinin@citrix.com>, Kevin Tian <kevin.tian@intel.com>, Stefano Stabellini <sstabellini@kernel.org>, Wei Liu <wei.liu2@citrix.com>, Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>, George Dunlap <George.Dunlap@eu.citrix.com>, Andrew Cooper <andrew.cooper3@citrix.com>, Tim Deegan <tim@xen.org>, Lars Kurth <lars.kurth@xenproject.org>, Xen-devel <xen-devel@lists.xen.org>, Julien Grall <julien.grall@arm.com>, Paul Durrant <paul.durrant@citrix.com>, Jun Nakajima <jun.nakajima@intel.com>, Ian Jackson <ian.jackson@citrix.com>, Roger Pau Monne <roger.pau@citrix.com>
List-Id: xen-devel@lists.xenproject.org
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