From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 0AF71EB64D7 for ; Tue, 20 Jun 2023 08:07:31 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qBWO3-0007p9-Tx; Tue, 20 Jun 2023 04:06:52 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qBWO2-0007ob-6b; Tue, 20 Jun 2023 04:06:50 -0400 Received: from mail.ozlabs.org ([2404:9400:2221:ea00::3] helo=gandalf.ozlabs.org) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qBWNz-0001WL-Vu; Tue, 20 Jun 2023 04:06:49 -0400 Received: from gandalf.ozlabs.org (gandalf.ozlabs.org [150.107.74.76]) by gandalf.ozlabs.org (Postfix) with ESMTP id 4QlfNf0Rm5z4wjF; Tue, 20 Jun 2023 18:06:42 +1000 (AEST) Received: from authenticated.ozlabs.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by mail.ozlabs.org (Postfix) with ESMTPSA id 4QlfNb4CgBz4wjC; Tue, 20 Jun 2023 18:06:39 +1000 (AEST) Message-ID: <45ed27fb-9d06-a323-a1fa-90435067ba91@kaod.org> Date: Tue, 20 Jun 2023 10:06:34 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.12.0 Subject: Re: [PATCH] hw/ppc/spapr: Test whether TCG is enabled with tcg_enabled() Content-Language: en-US To: =?UTF-8?Q?Philippe_Mathieu-Daud=c3=a9?= , qemu-devel@nongnu.org Cc: Harsh Prateek Bora , Daniel Henrique Barboza , David Gibson , Greg Kurz , qemu-ppc@nongnu.org, Nicholas Piggin References: <20230620074802.86898-1-philmd@linaro.org> From: =?UTF-8?Q?C=c3=a9dric_Le_Goater?= In-Reply-To: <20230620074802.86898-1-philmd@linaro.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2404:9400:2221:ea00::3; envelope-from=SRS0=rj0j=CI=kaod.org=clg@ozlabs.org; helo=gandalf.ozlabs.org X-Spam_score_int: -40 X-Spam_score: -4.1 X-Spam_bar: ---- X-Spam_report: (-4.1 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.25, NICE_REPLY_A=-0.09, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org On 6/20/23 09:48, Philippe Mathieu-Daudé wrote: > Although the PPC target only supports the TCG and KVM > accelerators, QEMU supports more. We can no assume that > '!kvm == tcg', so test for the correct accelerator. This > also eases code review, because here we don't care about > KVM, we really want to test for TCG. > > Signed-off-by: Philippe Mathieu-Daudé Reviewed-by: Cédric Le Goater > --- > hw/ppc/spapr.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c > index dcb7f1c70a..c4b666587b 100644 > --- a/hw/ppc/spapr.c > +++ b/hw/ppc/spapr.c > @@ -2524,7 +2524,7 @@ static void spapr_set_vsmt_mode(SpaprMachineState *spapr, Error **errp) > int ret; > unsigned int smp_threads = ms->smp.threads; > > - if (!kvm_enabled() && (smp_threads > 1)) { > + if (tcg_enabled() && (smp_threads > 1)) { > error_setg(errp, "TCG cannot support more than 1 thread/core " > "on a pseries machine"); > return; Nick, You might want to include this patch in the series adding SMT support to pseries/spapr : https://patchew.org/QEMU/20230605112323.179259-1-npiggin@gmail.com/ C.