Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753564Ab0ATRTU (ORCPT ); Wed, 20 Jan 2010 12:19:20 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753300Ab0ATRTT (ORCPT ); Wed, 20 Jan 2010 12:19:19 -0500 Received: from mx1.redhat.com ([209.132.183.28]:58347 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752748Ab0ATRTT (ORCPT ); Wed, 20 Jan 2010 12:19:19 -0500 Message-ID: <4B573AEF.9010007@redhat.com> Date: Wed, 20 Jan 2010 12:18:39 -0500 From: Rik van Riel Organization: Red Hat, Inc User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.5) Gecko/20091209 Fedora/3.0-4.fc12 Lightning/1.0pre Thunderbird/3.0 MIME-Version: 1.0 To: Avi Kivity CC: Gleb Natapov , "H. Peter Anvin" , Peter Zijlstra , kvm@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, mingo@elte.hu, tglx@linutronix.de, cl@linux-foundation.org Subject: Re: [PATCH v3 04/12] Add "handle page fault" PV helper. References: <1262700774-1808-5-git-send-email-gleb@redhat.com> <1263490267.4244.340.camel@laptop> <20100117144411.GI31692@redhat.com> <4B541D08.9040802@zytor.com> <20100118085022.GA30698@redhat.com> <4B5510B1.9010202@zytor.com> <20100119065537.GF14345@redhat.com> <4B55E5D8.1070402@zytor.com> <20100119174438.GA19450@redhat.com> <4B5611A9.4050301@zytor.com> <20100120100254.GC5238@redhat.com> <4B56F040.1080703@redhat.com> In-Reply-To: <4B56F040.1080703@redhat.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 968 Lines: 23 On 01/20/2010 07:00 AM, Avi Kivity wrote: > On 01/20/2010 12:02 PM, Gleb Natapov wrote: >> >> I can inject the event as HW interrupt on vector greater then 32 but not >> go through APIC so EOI will not be required. This sounds >> non-architectural >> and I am not sure kernel has entry point code for this kind of event, it >> has one for exception and one for interrupts that goes through __do_IRQ() >> which assumes that interrupts should be ACKed. > > Further, we start to interact with the TPR; Linux doesn't use the TPR or > cr8 but if it does one day we don't want it interfering with apf. That's not an issue is it? The guest will tell the host what vector to use for pseudo page faults. -- All rights reversed. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/