From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thomas Huth Subject: Re: [kvm-unit-tests PATCH] powerpc: Add SPRs migration test Date: Thu, 14 Apr 2016 10:18:45 +0200 Message-ID: <570F5265.9030204@redhat.com> References: <1460115329-21611-1-git-send-email-thuth@redhat.com> <20160411115507.524f8f9f@voom.fritz.box> <570B6D22.50104@redhat.com> <20160412112108.5ed39dfc@voom.fritz.box> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit To: Greg Harmon , kvm@vger.kernel.org Return-path: Received: from mx1.redhat.com ([209.132.183.28]:41398 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753536AbcDNISx (ORCPT ); Thu, 14 Apr 2016 04:18:53 -0400 In-Reply-To: Sender: kvm-owner@vger.kernel.org List-ID: On 12.04.2016 23:32, Greg Harmon wrote: > David Gibson redhat.com> writes: >> On Mon, 11 Apr 2016 11:23:46 +0200 >> Thomas Huth redhat.com> wrote: >>> On 11.04.2016 03:55, David Gibson wrote: >>>> On Fri, 8 Apr 2016 13:35:29 +0200 >>>> Thomas Huth redhat.com> wrote: >>>> >>>>> This test can be used to check whether the SPR (special purpose >>>>> registers) of the PowerPC CPU are migrated right. It first fills >>>>> the various SPRs with some non-zero value, then reads the values >>>>> back into a first array, then waits for a key (with the '-w' option) >>>>> so that it is possible to migrate the VM, and finally reads the >>>>> values from the SPRs back into another array and then compares it >>>>> with the initial values. > > Hi, > In order to make this test automated, what if we extend the test device to > return a save/restore generation number? It can report that in a > register,and then the test can spin, waiting for that value to increase. The test device only works on x86, as far as I know, so I'm afraid it's not usable for this case here on PowerPC. Thomas