From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: Re: [PATCH 0/4] Remove interrupt stack table usage from x86_64 kernel (v2) Date: Sat, 27 Dec 2008 23:42:26 +0200 Message-ID: <4956A142.6010207@redhat.com> References: <1230301344-570-1-git-send-email-avi@redhat.com> <20081226143517.GA25668@elte.hu> <20081226143836.GA3610@elte.hu> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: "H. Peter Anvin" , jeremy@goop.org, linux-kernel@vger.kernel.org, kvm@vger.kernel.org To: Ingo Molnar Return-path: Received: from mx2.redhat.com ([66.187.237.31]:52248 "EHLO mx2.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752320AbYL0Vmb (ORCPT ); Sat, 27 Dec 2008 16:42:31 -0500 In-Reply-To: <20081226143836.GA3610@elte.hu> Sender: kvm-owner@vger.kernel.org List-ID: Ingo Molnar wrote: > * Ingo Molnar wrote: > > >> They have the following commit IDs, and they are also in tip/master: >> >> 921e521: x86: move NMI back to interrupt stack >> 36ef6c9: x86: make interrupt stack switching atomic >> dd64891: x86: consolidate irq stack switching to a single macro >> 955a368: x86: drop the use of the tss interrupt stack table (IST) >> >> I also started testing them in tip-qa. >> > > testing failed quickly, the attached config crashes. I've pushed out the > bad kernel to the tip/tmp.master.bad branch: > > fe3aac9: Merge branch 'x86/irq' > > (no crashlog available - all i know that the box crashed and rebooted, > when booted with the bzImage built out of the attached config.) > I managed to reproduce this (after several hundred million interrupts and several dozen million NMIs - do you run anything special on your tests?) -- I have a truly marvellous patch that fixes the bug which this signature is too narrow to contain.