From mboxrd@z Thu Jan 1 00:00:00 1970 From: alex.shi@linaro.org (Alex Shi) Date: Fri, 9 Mar 2018 17:07:01 +0800 Subject: [PATCH 18/39] arm64: cpu_errata: Allow an erratum to be match for all revisions of a core In-Reply-To: <20180309090722.26279-1-alex.shi@linaro.org> References: <20180309090722.26279-1-alex.shi@linaro.org> Message-ID: <20180309090722.26279-19-alex.shi@linaro.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org From: Marc Zyngier commit 06f1494f837 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: Alex Shi --- arch/arm64/kernel/cpu_errata.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/arm64/kernel/cpu_errata.c b/arch/arm64/kernel/cpu_errata.c index 894333617d4e..0d3ea874133d 100644 --- a/arch/arm64/kernel/cpu_errata.c +++ b/arch/arm64/kernel/cpu_errata.c @@ -118,6 +118,12 @@ static void install_bp_hardening_cb(const struct arm64_cpu_capabilities *entry, .midr_range_min = min, \ .midr_range_max = max +#define MIDR_ALL_VERSIONS(model) \ + .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) || \ -- 2.16.2.440.gc6284da