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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 7D3B1D65C5B for ; Wed, 17 Dec 2025 14:56:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type:MIME-Version: References:In-Reply-To:Subject:Cc:To:From:Message-ID:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=pm/d2UKtzOccYByAnE9Is/8lOVEEBildwDpjRgQ5hgo=; b=AQqf1wFf9ZIICSy4N+wFf8+E7c zcIrnaaI7h15U/kPry4L44s9A5YA7jvNnOYG0MaIztY06rkrk9PECdnYOank45gEag36d4AHRNRy0 VNThloWppWiUrxia6kDd2sEWmacQvgjF5dK6/e4QPv07jntrkBONIwpzML1xEqR2IyMOVe5aDf8h1 zW6yEHfdTphiEepeZg2M05wcWfUaVE3HfLTTexRoGGzNJp0YDcfCxI6CTZV+rEPbKntnNTtzGhcvK OP+Z9gKWw55vE9uGMQABpyW3ciVT4DpT4At9lN778w9er5H7amZjPnuD0+YDwCZov5E1GbEOWXQwO PrEagXSA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1vVswd-00000006ySW-0Hmt; Wed, 17 Dec 2025 14:56:03 +0000 Received: from sea.source.kernel.org ([172.234.252.31]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1vVswb-00000006ySB-03s8 for linux-arm-kernel@lists.infradead.org; Wed, 17 Dec 2025 14:56:02 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id 0787A42DC4; Wed, 17 Dec 2025 14:56:00 +0000 (UTC) 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) 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 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20251217_065601_429682_A7E03CB2 X-CRM114-Status: GOOD ( 14.61 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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.