From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7D69B329364; Wed, 17 Dec 2025 14:56:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765983360; cv=none; b=jADEAoOR0AiO4llCf2+QxpesWvbfhx995PbQFcK/xtdSTK88/CkPUc4fyH690+mS+30LdC9gHhA0lzdTSYqxJq00c34jvfQkAt93Cs5oyv8niMhrnNP654fnGUEAVnPLkCD5AC7/8wZ5NKXcB5BY3JFzEXTGQVySHIQnVHr8iks= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765983360; c=relaxed/simple; bh=t/mr4DSr+l37OJwc6I7/5brkJs5xkCIOj4H/byoqO74=; h=Date:Message-ID:From:To:Cc:Subject:In-Reply-To:References: MIME-Version:Content-Type; b=RB0MuShmY2w122P+i0OCcmRV0hbjJNKjVUvaPaOMvxT2mYml6TDug+2Eiwss3A7VfR0czxQ0cfT/uh5Zt6alUZKnYfVNDhHFaIgGD6kdi1fzs7qGDSsrt+3qgyWdZpTroG/wToEjHQRLj0RXsQGiy5avXZRtHhwUV+PeisKIIh4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=iWaSVkJH; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="iWaSVkJH" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D10ADC4CEF5; Wed, 17 Dec 2025 14:55:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1765983359; bh=t/mr4DSr+l37OJwc6I7/5brkJs5xkCIOj4H/byoqO74=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=iWaSVkJHedG7iKb+Y9YC2Zp8wUUMFo8d4DTG0GLzmXN+fN5ZCFwpjTVzbLRVRqjIN xi53jFTvnKtTEMgarorH2QSeSjquCmZmnh6RchAUPo2GGOnRGJN5xMyYfuQBUTpaaA qKntXVHmtROzWn9xi3RhwSR47STdJY9e6+Fq9KOXPkW9FZMPpMglA0ByAEZaohPEyg iqO7Hk/0buD/tSL0LAunnKc0q/HcXziRaR9QvrP18dlcUncqJe+7Eg4c/MUKN3zb/R Q1vD0Pps2zstdlJyBig32dobvwjgsQ8h7Md7/QXtaht4cDgCWX8seLn1tkouwIqBuu neBcup5vU9fIQ== 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 4.98.2) (envelope-from ) id 1vVswX-0000000DPH6-2bcE; Wed, 17 Dec 2025 14:55:57 +0000 Date: Wed, 17 Dec 2025 14:55:57 +0000 Message-ID: <86y0n1ma2q.wl-maz@kernel.org> From: Marc Zyngier To: Steven Price Cc: kvm@vger.kernel.org, kvmarm@lists.linux.dev, Catalin Marinas , Will Deacon , James Morse , Oliver Upton , Suzuki K Poulose , Zenghui Yu , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Joey Gouly , Alexandru Elisei , Christoffer Dall , Fuad Tabba , linux-coco@lists.linux.dev, Ganapatrao Kulkarni , Gavin Shan , Shanker Donthineni , Alper Gun , "Aneesh Kumar K . V" , Emi Kisanuki , Vishal Annapurve Subject: Re: [PATCH v12 00/46] arm64: Support for Arm CCA in KVM In-Reply-To: <20251217101125.91098-1-steven.price@arm.com> References: <20251217101125.91098-1-steven.price@arm.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) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: 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: steven.price@arm.com, kvm@vger.kernel.org, kvmarm@lists.linux.dev, catalin.marinas@arm.com, will@kernel.org, james.morse@arm.com, oliver.upton@linux.dev, suzuki.poulose@arm.com, yuzenghui@huawei.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, joey.gouly@arm.com, alexandru.elisei@arm.com, christoffer.dall@arm.com, tabba@google.com, linux-coco@lists.linux.dev, gankulkarni@os.amperecomputing.com, gshan@redhat.com, sdonthineni@nvidia.com, alpergun@google.com, aneesh.kumar@kernel.org, fj0570is@fujitsu.com, vannapurve@google.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false On Wed, 17 Dec 2025 10:10:37 +0000, Steven Price wrote: > > This series adds support for running protected VMs using KVM under the > Arm Confidential Compute Architecture (CCA). I've changed the uAPI > following feedback from Marc. > > The main change is that rather than providing a multiplex CAP and > expecting the VMM to drive the different stages of realm construction, > there's now just a minimal interface and KVM performs the necessary > operations when needed. What are the relevant patches? I'd rather not look at the non-2.0 patches at all, given that they are pretty meaningless for KVM. M. -- Without deviation from the norm, progress is not possible.