From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756011AbcGHQ3R (ORCPT ); Fri, 8 Jul 2016 12:29:17 -0400 Received: from mx1.redhat.com ([209.132.183.28]:35073 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755580AbcGHQ3L (ORCPT ); Fri, 8 Jul 2016 12:29:11 -0400 Date: Fri, 8 Jul 2016 18:29:07 +0200 From: Radim =?utf-8?B?S3LEjW3DocWZ?= To: linux-kernel@vger.kernel.org, kvm@vger.kernel.org Cc: Paolo Bonzini , "Lan, Tianyu" , Igor Mammedov , Jan Kiszka , Peter Xu Subject: Re: [PATCH v2 00/13] KVM: x86: break the xAPIC barrier Message-ID: <20160708162907.GB10741@potion> References: <20160707171550.14675-1-rkrcmar@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20160707171550.14675-1-rkrcmar@redhat.com> X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.32]); Fri, 08 Jul 2016 16:29:11 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org NACK, sorry. KVM allows x2APIC even without interrupt remapping and therefore interprets IOAPIC destination 0xff as a broadcast, which causes a bug when x2APIC uses 0xff. I'll fix that in v3. The hack will be disabled when x2apic_api capability is enabled.