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[209.51.188.17]) by mx.google.com with ESMTPS id 6a1803df08f44-6faa68bb3d8si50179086d6.180.2025.05.27.00.46.03 for (version=TLS1_2 cipher=ECDHE-ECDSA-CHACHA20-POLY1305 bits=256/256); Tue, 27 May 2025 00:46:03 -0700 (PDT) Received-SPF: pass (google.com: domain of qemu-arm-bounces+alex.bennee=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=r19i3bnf; spf=pass (google.com: domain of qemu-arm-bounces+alex.bennee=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom="qemu-arm-bounces+alex.bennee=linaro.org@nongnu.org"; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=kernel.org Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1uJouy-0004T9-3s; Tue, 27 May 2025 03:40:12 -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 1uJouw-0004QI-JG; Tue, 27 May 2025 03:40:10 -0400 Received: from dfw.source.kernel.org ([2604:1380:4641:c500::1]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1uJout-00080u-Ta; Tue, 27 May 2025 03:40:10 -0400 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id 790055C0598; Tue, 27 May 2025 07:37:40 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2CD77C4CEE9; Tue, 27 May 2025 07:39:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1748331597; bh=CK7B+DLHTo9Tt6vVecvTlPWhG2Uet410/kYVZcNVpdA=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=r19i3bnfhXEIGnONmw+mwq8DwGvuRcbIcMWiLwa6Wj+ye6/TPEAih0I9GPXXAKaIh oTGkWZ0Y1z/c98c9xqeqNwFQv7mNZDSepoNTow/G1x5uTU32bYIAuT2qY7o3tm+Etu lwd/6Oxb1hGCS8EWrIq/hdI+EtOuLPvL6dRS+M2XQ4EQY+K+xYw7sZlsMzdS4yXPWK NbesYdPiFOWB3bMkUbTt7GgKDLk840xdW4qOQcS5jsw+LZB9a6EQO+31B0tHMePZMm APaGOcXRHPa8xhzgnsUcKibxsqUvn3r2a2p6nLz7LUnwfd+SwSkLUdlQm3OLo1vAgH iy5VFtmPLQ+mQ== Received: from sofa.misterjones.org ([185.219.108.64] helo=goblin-girl.misterjones.org) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.95) (envelope-from ) id 1uJoug-000nrv-0C; Tue, 27 May 2025 08:39:54 +0100 Date: Tue, 27 May 2025 08:39:53 +0100 Message-ID: <86msayec3a.wl-maz@kernel.org> From: Marc Zyngier To: Eric Auger Cc: eric.auger.pro@gmail.com, qemu-devel@nongnu.org, qemu-arm@nongnu.org, miguel.luis@oracle.com, peter.maydell@linaro.org, richard.henderson@linaro.org, gkulkarni@amperecomputing.com, gankulkarni@os.amperecomputing.com Subject: Re: [PATCH v5 0/5] ARM Nested Virt Support In-Reply-To: <20250527062534.1186004-1-eric.auger@redhat.com> References: <20250527062534.1186004-1-eric.auger@redhat.com> User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI-EPG/1.14.7 (Harue) FLIM-LB/1.14.9 (=?UTF-8?B?R29qxY0=?=) APEL-LB/10.8 EasyPG/1.0.0 Emacs/30.1 (aarch64-unknown-linux-gnu) MULE/6.0 (HANACHIRUSATO) MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Content-Type: text/plain; charset=US-ASCII X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: eric.auger@redhat.com, eric.auger.pro@gmail.com, qemu-devel@nongnu.org, qemu-arm@nongnu.org, miguel.luis@oracle.com, peter.maydell@linaro.org, richard.henderson@linaro.org, gkulkarni@amperecomputing.com, gankulkarni@os.amperecomputing.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false Received-SPF: pass client-ip=2604:1380:4641:c500::1; envelope-from=maz@kernel.org; helo=dfw.source.kernel.org X-Spam_score_int: -49 X-Spam_score: -5.0 X-Spam_bar: ----- X-Spam_report: (-5.0 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-2.903, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-arm@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-arm-bounces+alex.bennee=linaro.org@nongnu.org Sender: qemu-arm-bounces+alex.bennee=linaro.org@nongnu.org X-TUID: GYLlc+RRTBZg Hi Eric, On Tue, 27 May 2025 07:24:32 +0100, Eric Auger wrote: > > Now that ARM nested virt has landed in kvm/next, let's turn the series > into a PATCH series. The linux header update was made against kvm/next. > > For gaining virt functionality in KVM accelerated L1, The host needs to > be booted with "kvm-arm.mode=nested" option and qemu needs to be invoked > with: -machine virt,virtualization=on. Thanks for respinning this series. Do you have any plan to support the non-VHE version of the NV support (as advertised by KVM_CAP_ARM_EL2_E2H0)? It would allow running lesser hypervisors (such as *cough* Xen *cough*), which completely rely on HCR_EL2.E2H being 0? Thanks, M. -- Without deviation from the norm, progress is not possible.