From patchwork Tue Sep 1 15:10:22 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 264656 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=-13.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable 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 71AF1C433E6 for ; Tue, 1 Sep 2020 16:03:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4266E2078B for ; Tue, 1 Sep 2020 16:03:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1598976184; bh=nN2X4oEKGVhTNSkEAU4v2/jWqY5AJGIkryR8OT7ctnQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=wuYK8mmYLeouRyPqxM91ntLQh/rKIBnUXj/BHwBn/K8VdItMmfl3m7C84BLCXlJrs jA9zIPAVtne0AF+Pd8jYfFuzAUEPSlQE3QESWZ65HFOKBnSO+GjlHluK9DHcIfHxA2 XEyu6pqEMTFUYugTKjcohRRr9lMv6ONMtlCacfHY= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731638AbgIAPnI (ORCPT ); Tue, 1 Sep 2020 11:43:08 -0400 Received: from mail.kernel.org ([198.145.29.99]:56756 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731637AbgIAPnG (ORCPT ); Tue, 1 Sep 2020 11:43:06 -0400 Received: from localhost (83-86-74-64.cable.dynamic.v4.ziggo.nl [83.86.74.64]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 6EEE920866; Tue, 1 Sep 2020 15:43:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1598974986; bh=nN2X4oEKGVhTNSkEAU4v2/jWqY5AJGIkryR8OT7ctnQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=08tVhlU8O46NqbZRFBzbf7Ah+IRqhqOR0MXtPoImm7Y8NdQy4UFxdYz5IcqQLYvaD dFUjNFuhWB/9M/McQ8PDSlatZnXZT8OeUt+4OC/UAivxQhZeiqePh4SgfzzmfBwTJ/ pQ2uI33a+tFXF5jHh1QqI54373bOHe4eEF14QDt4= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Marc Zyngier , Sai Prakash Ranjan , Stephen Boyd , Suzuki K Poulose , Will Deacon , Catalin Marinas , Sasha Levin Subject: [PATCH 5.8 166/255] arm64: Allow booting of late CPUs affected by erratum 1418040 Date: Tue, 1 Sep 2020 17:10:22 +0200 Message-Id: <20200901151008.648624285@linuxfoundation.org> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200901151000.800754757@linuxfoundation.org> References: <20200901151000.800754757@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Marc Zyngier [ Upstream commit bf87bb0881d0f59181fe3bbcf29c609f36483ff8 ] 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 Tested-by: Sai Prakash Ranjan Reviewed-by: Stephen Boyd Reviewed-by: Suzuki K Poulose Acked-by: Will Deacon Link: https://lore.kernel.org/r/20200731173824.107480-3-maz@kernel.org Signed-off-by: Catalin Marinas Signed-off-by: Sasha Levin --- 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 79728bfb5351f..2c0b82db825ba 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