From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paolo Bonzini Subject: Re: [PATCH 3/4] KVM: x86: inject nested page faults on emulated instructions Date: Thu, 04 Sep 2014 19:17:25 +0200 Message-ID: <54089EA5.5080407@redhat.com> References: <1409670830-14544-1-git-send-email-pbonzini@redhat.com> <1409670830-14544-4-git-send-email-pbonzini@redhat.com> <20140904070220.GL9842@cloudius-systems.com> <54087343.5050409@redhat.com> <20140904150500.GA25317@minantech.com> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Cc: Gleb Natapov , linux-kernel@vger.kernel.org, kvm@vger.kernel.org, jroedel@suse.de, agraf@suse.de, valentine.sinitsyn@gmail.com, jan.kiszka@siemens.com, avi@cloudius-systems.com To: Gleb Natapov Return-path: Received: from mx1.redhat.com ([209.132.183.28]:13872 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753875AbaIDRSH (ORCPT ); Thu, 4 Sep 2014 13:18:07 -0400 In-Reply-To: <20140904150500.GA25317@minantech.com> Sender: kvm-owner@vger.kernel.org List-ID: Il 04/09/2014 17:05, Gleb Natapov ha scritto: >> > if (ctxt->have_exception) { >> > inject_emulated_exception(vcpu); >> > - r = EMULATE_DONE; >> > + return EMULATE_DONE; > If there was no vmexit we still want to writeback. Perhaps: > writeback = inject_emulated_exception(vcpu); > and return false if there was vmexit due to nested page fault (or any fault, > can't L1 ask for #GP/#UD intercept that need to be handled here too?) > Sounds good. Paolo