From mboxrd@z Thu Jan  1 00:00:00 1970
From: Norbert Manthey <nmanthey@amazon.de>
Subject: [PATCH SpectreV1+L1TF v7 2/9] x86/vioapic: block
 speculative out-of-bound accesses
Date: Thu, 21 Feb 2019 09:16:36 +0100
Message-ID: <1550737003-25779-3-git-send-email-nmanthey@amazon.de>
References: <1550737003-25779-1-git-send-email-nmanthey@amazon.de>
Mime-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: base64
Return-path: <xen-devel-bounces@lists.xenproject.org>
Received: from us1-rack-dfw2.inumbo.com ([104.130.134.6])
 by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from
 <SRS0=rINu=Q4=amazon.de=prvs=9484abbec=nmanthey@srs-us1.protection.inumbo.net>)
 id 1gwjYE-0000hz-8t
 for xen-devel@lists.xenproject.org; Thu, 21 Feb 2019 08:17:50 +0000
In-Reply-To: <1550737003-25779-1-git-send-email-nmanthey@amazon.de>
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: xen-devel@lists.xenproject.org
Cc: Juergen Gross <jgross@suse.com>, Tim Deegan <tim@xen.org>, 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>, Ian Jackson <ian.jackson@eu.citrix.com>, Dario Faggioli <dfaggioli@suse.com>, Martin Pohlack <mpohlack@amazon.de>, Pawel Wieczorkiewicz <wipawel@amazon.de>, Julien Grall <julien.grall@arm.com>, David Woodhouse <dwmw@amazon.co.uk>, Jan Beulich <jbeulich@suse.com>, Martin Mazein <amazein@amazon.de>, Julian Stecklina <jsteckli@amazon.de>, Bjoern Doebel <doebel@amazon.de>, Norbert Manthey <nmanthey@amazon.de>
List-Id: xen-devel@lists.xenproject.org
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