From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:36116 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932107AbeDQQJ2 (ORCPT ); Tue, 17 Apr 2018 12:09:28 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Greg Kroah-Hartman , Thomas Gleixner , Mark Rutland , Daniel Lezcano , Suzuki K Poulose , Marc Zyngier , Greg Hackmann Subject: [PATCH 4.9 32/66] arm64: cpu_errata: Allow an erratum to be match for all revisions of a core Date: Tue, 17 Apr 2018 17:59:05 +0200 Message-Id: <20180417155647.267387199@linuxfoundation.org> In-Reply-To: <20180417155645.868055442@linuxfoundation.org> References: <20180417155645.868055442@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: stable-owner@vger.kernel.org List-ID: 4.9-stable review patch. If anyone has any objections, please let me know. ------------------ From: Mark Rutland From: Marc Zyngier commit 06f1494f837da8997d670a1ba87add7963b08922 upstream. Some minor erratum may not be fixed in further revisions of a core, leading to a situation where the workaround needs to be updated each time an updated core is released. Introduce a MIDR_ALL_VERSIONS match helper that will work for all versions of that MIDR, once and for all. Acked-by: Thomas Gleixner Acked-by: Mark Rutland Acked-by: Daniel Lezcano Reviewed-by: Suzuki K Poulose Signed-off-by: Marc Zyngier Signed-off-by: Mark Rutland [v4.9 backport] Tested-by: Greg Hackmann Signed-off-by: Greg Kroah-Hartman --- arch/arm64/kernel/cpu_errata.c | 7 +++++++ 1 file changed, 7 insertions(+) --- a/arch/arm64/kernel/cpu_errata.c +++ b/arch/arm64/kernel/cpu_errata.c @@ -127,6 +127,13 @@ static void install_bp_hardening_cb(con .midr_range_min = min, \ .midr_range_max = max +#define MIDR_ALL_VERSIONS(model) \ + .def_scope = SCOPE_LOCAL_CPU, \ + .matches = is_affected_midr_range, \ + .midr_model = model, \ + .midr_range_min = 0, \ + .midr_range_max = (MIDR_VARIANT_MASK | MIDR_REVISION_MASK) + const struct arm64_cpu_capabilities arm64_errata[] = { #if defined(CONFIG_ARM64_ERRATUM_826319) || \ defined(CONFIG_ARM64_ERRATUM_827319) || \