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Mon, 7 Jun 2021 09:21:58 +0200 (CEST) Subject: Re: [FSL P50x0] KVM HV doesn't work anymore From: Christian Zigotzky To: Nicholas Piggin , Christophe Leroy , "kvm-ppc@vger.kernel.org" , linuxppc-dev References: <04526309-4653-3349-b6de-e7640c2258d6@xenosoft.de> <34617b1b-e213-668b-05f6-6fce7b549bf0@xenosoft.de> <9af2c1c9-2caf-120b-2f97-c7722274eee3@csgroup.eu> <199da427-9511-34fe-1a9e-08e24995ea85@xenosoft.de> <1621236734.xfc1uw04eb.astroid@bobo.none> <1621410977.cgh0d6nvlo.astroid@bobo.none> <1621464963.g8v9ejlhyh.astroid@bobo.none> Message-ID: Date: Mon, 7 Jun 2021 09:21:58 +0200 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:78.0) Gecko/20100101 Thunderbird/78.11.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Content-Language: de-DE X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Darren Stevens , "R.T.Dickinson" , mad skateman , Christian Zigotzky Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On 02 June 2021 at 01:26pm, Christian Zigotzky wrote: > On 20 May 2021 at 01:07am, Nicholas Piggin wrote: >> Hmm, okay that probably rules out those notifier changes then. >> Can you remind me were you able to rule these out as suspects? >> >> 8f6cc75a97d1 powerpc: move norestart trap flag to bit 0 >> 8dc7f0229b78 powerpc: remove partial register save logic >> c45ba4f44f6b powerpc: clean up do_page_fault >> d738ee8d56de powerpc/64e/interrupt: handle bad_page_fault in C >> ceff77efa4f8 powerpc/64e/interrupt: Use new interrupt context >> tracking scheme >> 097157e16cf8 powerpc/64e/interrupt: reconcile irq soft-mask state in C >> 3db8aa10de9a powerpc/64e/interrupt: NMI save irq soft-mask state in C >> 0c2472de23ae powerpc/64e/interrupt: use new interrupt return >> dc6231821a14 powerpc/interrupt: update common interrupt code for >> 4228b2c3d20e powerpc/64e/interrupt: always save nvgprs on interrupt >> 5a5a893c4ad8 powerpc/syscall: switch user_exit_irqoff and >> trace_hardirqs_off order >> >> Thanks, >> Nick > Hi Nick, > > I tested these commits above today and all works with -smp 4. [1] > > Smp 4 still doesn't work with the RC4 of kernel 5.13 on quad core > e5500 CPUs with KVM HV. I use -smp 3 currently. > > What shall I test next? > > Thanks, > Christian > > [1] https://forum.hyperion-entertainment.com/viewtopic.php?p=53367#p53367 Hi All, I tested the RC5 of kernel 5.13 today. Unfortunately the KVM HV issue still exists. I also figured out, that '-smp 2' doesn't work either. Summary: -smp 1 -> works -smp 2 -> doesn't work -smp 3 -> works -smp 4 -> doesn't work Cheers, Christian