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 160C2FE520C for ; Fri, 24 Apr 2026 11:08:28 +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-Transfer-Encoding: Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc: To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=C6GePlXqr4KEOmk21GYvQBuwFXeqvmi10cZFU9jiyGs=; b=V0ptC0m4aIt+SijjoBzuLl6cNR Oq5ao03ARtGMaQPdsN9RrlY3/dnjZfU/YOgRgJ5djk45bPusF1eeqOt/CXcb3bRimQVgxDiA5f+s+ shNfJkmRkPzCJSUqlmdEox8FtLMn6dYvWvboDHl3pnQ+dhyTX6OkfyjnxGalS6vTKLAq3mM142DMh 0qKzAw53iZIetiJRMClAFe/dfo0M2WGIOvmeluL6Jb0qmmSkScG+k+flW+RgCaMD+mZAogO6AshaC 9Bs43hRKLKhixV41/t7lq7BM5epM2joaKAKgXrZA/s+JfmK9+FJgMRyI4PYfMWSeDbtwCoo32gGI2 lApwDQqA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1wGEOT-0000000D4Mm-1wRL; Fri, 24 Apr 2026 11:08:21 +0000 Received: from sea.source.kernel.org ([2600:3c0a:e001:78e:0:1991:8:25]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1wGEOJ-0000000D4IX-0UMJ for linux-arm-kernel@lists.infradead.org; Fri, 24 Apr 2026 11:08:12 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id CFE4144312; Fri, 24 Apr 2026 11:08:10 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id AA4DBC2BCB6; Fri, 24 Apr 2026 11:08:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1777028890; bh=cmSla55ceuCbLiK30aqfSAllXwLZ2tM2r3ifRj5DUwI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=hBb/hNTAcd75sQn1Q24gofMGtsSOC2duEKWZgSdOuB8gWgI2gXbaQOc17YPe1fWlX 6lbv0d7o1Q5rpU8W0H04GkZ1bTwtfJf+MXj8uLQwBTb+nN6kdTUP6tgoCf/R59irTL tzVNAxU7AwLJmRrKdd95N/wH1Z2GiVTFYObvCjVlSFK+uoQqNFfv7IjyIqTC9jXnbK r8B3a2dV/LyTHYnr9FKcZMZmyJ4eO7Lxf0G+lJmxw7m+KsnZxmOgOMugvzY3ihGNmZ x6pe2P3fhZcG2Pm8YPJTNcus3CDN+l7qQB2tFawDOp8UMlUGUxiFOnKjMD05xGchSC vagYo7CTAgnsA== Received: from sofa.misterjones.org ([185.219.108.64] helo=valley-girl.lan) 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 1wGEOG-0000000ELuX-251e; Fri, 24 Apr 2026 11:08:08 +0000 From: Marc Zyngier To: catalin.marinas@arm.com, kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, android-kvm@google.com, Sebastian Ene Cc: joey.gouly@arm.com, korneld@google.com, mrigendra.chaubey@gmail.com, oupton@kernel.org, perlarsen@google.com, suzuki.poulose@arm.com, will@kernel.org, yuzenghui@huawei.com Subject: Re: [PATCH v2] KVM: arm64: Reject non compliant SMCCC function calls in pKVM Date: Fri, 24 Apr 2026 12:08:05 +0100 Message-ID: <177702878144.537738.10946354960670336499.b4-ty@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260408114118.422604-1-sebastianene@google.com> References: <20260408114118.422604-1-sebastianene@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: catalin.marinas@arm.com, kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, android-kvm@google.com, sebastianene@google.com, joey.gouly@arm.com, korneld@google.com, mrigendra.chaubey@gmail.com, oupton@kernel.org, perlarsen@google.com, suzuki.poulose@arm.com, will@kernel.org, yuzenghui@huawei.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-20260424_040811_181281_516580F4 X-CRM114-Status: GOOD ( 10.51 ) 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, 08 Apr 2026 11:41:18 +0000, Sebastian Ene wrote: > Prevent the propagation of a function-id that has the top bits set since > this is not compliant with the SMCCC spec and can overlap with the > already known function-id decoders. (eg. if we invoke an smc with > 0xffffffffc4000012 it will be decoded as a PSCI reset call). Instead, > make it clear that we don't support it and return an error. > > > [...] Applied to fixes, thanks! [1/1] KVM: arm64: Reject non compliant SMCCC function calls in pKVM commit: 480ea48cad873b49a1fabd07c0847c3cf1c32286 Cheers, M. -- Without deviation from the norm, progress is not possible.