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=-12.3 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,NICE_REPLY_A,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_SANE_1 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 0F3E6C433DF for ; Wed, 29 Jul 2020 09:31:16 +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 CD115206D4 for ; Wed, 29 Jul 2020 09:31:15 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="cjIe/LV8" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CD115206D4 Authentication-Results: mail.kernel.org; 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Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1k0iP9-0000Mr-Cs; Wed, 29 Jul 2020 09:29:43 +0000 Received: from foss.arm.com ([217.140.110.172]) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1k0iP7-0000MG-HX for linux-arm-kernel@lists.infradead.org; Wed, 29 Jul 2020 09:29:42 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id A8C3331B; Wed, 29 Jul 2020 02:29:34 -0700 (PDT) Received: from [10.37.8.154] (unknown [10.37.8.154]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 82B533F718; Wed, 29 Jul 2020 02:29:32 -0700 (PDT) Subject: Re: [PATCH 2/2] arm64: Allow booting of late CPUs affected by erratum 1418040 To: maz@kernel.org, linux-arm-kernel@lists.infradead.org References: <20200728092112.3865765-1-maz@kernel.org> <20200728092112.3865765-3-maz@kernel.org> From: Suzuki K Poulose Message-ID: Date: Wed, 29 Jul 2020 10:34:16 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.7.0 MIME-Version: 1.0 In-Reply-To: <20200728092112.3865765-3-maz@kernel.org> Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200729_052941_655884_4A22BEFF X-CRM114-Status: GOOD ( 20.29 ) 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: swboyd@google.com, saiprakash.ranjan@codeaurora.org, kernel-team@android.com, catalin.marinas@arm.com, dianders@google.com, will@kernel.org Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 07/28/2020 10:21 AM, Marc Zyngier wrote: > As we can now switch from a system that isn't affected by 1418040 > to a system that globally is affected, let's allow affected CPUs > to come in at a later time. > > Signed-off-by: Marc Zyngier > --- > arch/arm64/kernel/cpu_errata.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/arch/arm64/kernel/cpu_errata.c b/arch/arm64/kernel/cpu_errata.c > index 79728bfb5351..2c0b82db825b 100644 > --- a/arch/arm64/kernel/cpu_errata.c > +++ b/arch/arm64/kernel/cpu_errata.c > @@ -910,6 +910,8 @@ const struct arm64_cpu_capabilities arm64_errata[] = { > .desc = "ARM erratum 1418040", > .capability = ARM64_WORKAROUND_1418040, > ERRATA_MIDR_RANGE_LIST(erratum_1418040_list), > + .type = (ARM64_CPUCAP_SCOPE_LOCAL_CPU | > + ARM64_CPUCAP_PERMITTED_FOR_LATE_CPU), > }, > #endif > #ifdef CONFIG_ARM64_WORKAROUND_SPECULATIVE_AT > Reviewed-by: Suzuki K Poulose _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel