From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754455AbdBHNeZ (ORCPT ); Wed, 8 Feb 2017 08:34:25 -0500 Received: from mx1.redhat.com ([209.132.183.28]:56156 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753874AbdBHNeX (ORCPT ); Wed, 8 Feb 2017 08:34:23 -0500 Date: Wed, 8 Feb 2017 14:33:44 +0100 From: Radim =?utf-8?B?S3LEjW3DocWZ?= To: Paolo Bonzini Cc: linux-kernel@vger.kernel.org, kvm@vger.kernel.org Subject: Re: [PATCH v2 0/6] KVM: x86: cleanup and speedup for APICv Message-ID: <20170208133344.GI31091@potion> References: <1482164232-130035-1-git-send-email-pbonzini@redhat.com> <20170207215217.GG31091@potion> <6d7ba1e5-5da0-f2ea-bc73-c6b04a055a9b@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <6d7ba1e5-5da0-f2ea-bc73-c6b04a055a9b@redhat.com> X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.39]); Wed, 08 Feb 2017 13:33:47 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 2017-02-08 11:04+0100, Paolo Bonzini: > On 07/02/2017 22:52, Radim Krčmář wrote: >> there might be some rough >> edges with nested, but it was broken even before, and they fix at least >> one known bug. > > I don't think so, nested IRQ injection is tested very well. Why do you > say it was broken even before? I was basing on recent bug report where we missed IOMMU injection in a non-nested case [1]. While we do cover the non-nested case with this series, I think we still miss posted interrupts from IOMMU that should trigger a nested VM exit from L2 to L1 -- details in review of [6/6]. 1: http://www.spinics.net/lists/kvm/msg144355.html