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 X-Spam-Level: X-Spam-Status: No, score=-12.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 004B6C55178 for ; Wed, 28 Oct 2020 15:14:34 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 88E7B24694 for ; Wed, 28 Oct 2020 15:14:33 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="WhJqQ0uo"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="co88HEQH" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 88E7B24694 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To:Message-Id:Date: Subject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=LJxzUQMSnbHTxC1uFGxT9fB1cgwqw8TpDjMI+dcWHM4=; b=WhJqQ0uo1xaIjgO8e6Qy7gzPO Q0ARSib+tw5o8gWZlAg3P/cnvgqdgOJoBV+DVyclF+nH/lXrQzBkyKLbuaSTocAOxUl4bs8kfhyIT h6N+8WMfoGsuiccex55H9VKp4y95Douotn9YDwM/rXbI/u0PxvnjRhUoUtcI5xAu7CoE6yJ2aNnMj GnF3BXpCG1luO1LR6BrpAWiCzSSEz6FlYkTbVSq3OnPpXwSRqy3yFDiw0XJwEYyLhZxY23CnPHY3F M3HYQeFup5HMvJ4E5rH28s10YOvfr1zwY+oLgps3/tdfFF8BObNJf3dHd/IeuM1b5fmtnJKtogP5q j6w69qW6w==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kXn8M-0007Cf-CA; Wed, 28 Oct 2020 15:13:06 +0000 Received: from mail.kernel.org ([198.145.29.99]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kXn8A-00079u-8H for linux-arm-kernel@lists.infradead.org; Wed, 28 Oct 2020 15:12:56 +0000 Received: from localhost.localdomain (236.31.169.217.in-addr.arpa [217.169.31.236]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id A9CD7247B3; Wed, 28 Oct 2020 15:12:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1603897973; bh=9ClaS39qsu/8IFZeXHaVx8PcmKehSz9sH+qzL4vXJxs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=co88HEQHIL5+KsFEIyZ1iMP+lEmwUbGs90igcu0t9SFvJwRYsCz6Zceb/tQX0k8h4 Wv0pj60BkZl4dUvuQGdz3g/BimVof8eTpIJgkmWJdG+GkN8yiYmIGVweIrNu7cXOpD cPsSvSXGu5YPXxaq2AdLKJujm65qVV5nluI6LLJk= From: Will Deacon To: Catalin Marinas , Stephen Boyd Subject: Re: [PATCH v3] KVM: arm64: ARM_SMCCC_ARCH_WORKAROUND_1 doesn't return SMCCC_RET_NOT_REQUIRED Date: Wed, 28 Oct 2020 15:12:36 +0000 Message-Id: <160388361710.744976.4736349542337915760.b4-ty@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20201023154751.1973872-1-swboyd@chromium.org> References: <20201023154751.1973872-1-swboyd@chromium.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201028_111255_235795_9636FB61 X-CRM114-Status: GOOD ( 11.35 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kernel-team@android.com, linux-kernel@vger.kernel.org, stable@vger.kernel.org, Steven Price , Andre Przywara , Marc Zyngier , Will Deacon , linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Fri, 23 Oct 2020 08:47:50 -0700, Stephen Boyd wrote: > According to the SMCCC spec[1](7.5.2 Discovery) the > ARM_SMCCC_ARCH_WORKAROUND_1 function id only returns 0, 1, and > SMCCC_RET_NOT_SUPPORTED. > > 0 is "workaround required and safe to call this function" > 1 is "workaround not required but safe to call this function" > SMCCC_RET_NOT_SUPPORTED is "might be vulnerable or might not be, who knows, I give up!" > > [...] Applied to arm64 (for-next/fixes), thanks! [1/1] KVM: arm64: ARM_SMCCC_ARCH_WORKAROUND_1 doesn't return SMCCC_RET_NOT_REQUIRED https://git.kernel.org/arm64/c/1de111b51b82 Cheers, -- Will https://fixes.arm64.dev https://next.arm64.dev https://will.arm64.dev _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel