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[195.135.220.28]) by mx.google.com with ESMTPS id g11-20020a5d64eb000000b0024262f81683si406849wri.835.2023.01.13.08.22.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 13 Jan 2023 08:22:20 -0800 (PST) Received-SPF: pass (google.com: domain of farosas@suse.de designates 195.135.220.28 as permitted sender) client-ip=195.135.220.28; Authentication-Results: mx.google.com; dkim=pass header.i=@suse.de header.s=susede2_rsa header.b=UR1U90OJ; dkim=neutral (no key) header.i=@suse.de header.s=susede2_ed25519 header.b=3hEfh+aP; spf=pass (google.com: domain of farosas@suse.de designates 195.135.220.28 as permitted sender) smtp.mailfrom=farosas@suse.de; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=suse.de Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id A06A26BBA3; Fri, 13 Jan 2023 16:22:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1673626939; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=mKs/ggpulP1sYOtSS5Rw57ie3DsUzarayKgqr5ie3Tc=; b=UR1U90OJmocxTEYD7nrMARQ/CDib9KcPrabedlM592AEPclaAxIUNy6zOnS1b4Wa8dK1gj s9TjqxSG3xQuraHzYlHsbCU05aZpZt/FWWTezVSZaglvVgaUULDQBdzsmnz/1AMAwLJh19 nEAoAXmy0r1YYiVGcOBQdC9rA/U8I3I= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1673626939; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=mKs/ggpulP1sYOtSS5Rw57ie3DsUzarayKgqr5ie3Tc=; b=3hEfh+aPOrgHtB8GUxooNsQPfubODaXBJo87L9ePiQer/8V4oZnVy4P+l22tT3fNM7yTzz cReJ2zi59+9dArDg== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id 2D9611358A; Fri, 13 Jan 2023 16:22:18 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id XHDyOTqFwWN0UwAAMHmgww (envelope-from ); Fri, 13 Jan 2023 16:22:18 +0000 From: Fabiano Rosas To: Claudio Fontana , qemu-devel@nongnu.org Cc: qemu-arm@nongnu.org, Peter Maydell , Philippe =?utf-8?Q?Mathieu-Daud=C3=A9?= , Richard Henderson , Alex =?utf-8?Q?Benn=C3=A9e?= , Paolo Bonzini , Eduardo Habkost , Alexander Graf , Thomas Huth , Laurent Vivier Subject: Re: [RFC PATCH v3 20/28] target/arm: Set cortex-a57 as default cpu for KVM-only build In-Reply-To: <3be55a1c-64cd-28f3-9c7f-ceb67b20c36e@suse.de> References: <20230113140419.4013-1-farosas@suse.de> <20230113140419.4013-21-farosas@suse.de> <3be55a1c-64cd-28f3-9c7f-ceb67b20c36e@suse.de> Date: Fri, 13 Jan 2023 13:22:16 -0300 Message-ID: <875ydaievb.fsf@suse.de> MIME-Version: 1.0 Content-Type: text/plain X-TUID: wRFCsYBNGozj Claudio Fontana writes: > On 1/13/23 15:04, Fabiano Rosas wrote: >> The cortex-a15 is not present anymore when CONFIG_TCG=n, so use the >> cortex-a57 as default cpu for KVM. >> >> Signed-off-by: Fabiano Rosas > > Our recommendation currently for KVM on ARM is to always use CPU="host", as named cpu models generally don't work (yet?) with KVM. > > https://qemu-project.gitlab.io/qemu/system/arm/cpu-features.html > > Should then "host" be the default for KVM if CONFIG_TCG=N or CONFIG_TCG=M and the TCG .so is not loaded? Yes, "host" seems to make more sense. I was under the impression that there was a way to use cortex-a57 and cortex-a53 since they have cpu->kvm_target set.