[PATCH v4.4 24/45] arm64: cpu_errata: Allow an erratum to be match for all revisions of a core
From: Viresh Kumar <viresh.kumar@linaro.org>
Date: 2019-06-14 03:12:59
Also in:
stable
Subsystem:
arm64 port (aarch64 architecture), the rest · Maintainers:
Catalin Marinas, Will Deacon, Linus Torvalds
From: Marc Zyngier <redacted> 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 <redacted> Acked-by: Mark Rutland <mark.rutland@arm.com> Acked-by: Daniel Lezcano <redacted> Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Marc Zyngier <redacted> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> --- arch/arm64/kernel/cpu_errata.c | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/arch/arm64/kernel/cpu_errata.c b/arch/arm64/kernel/cpu_errata.c
index 6c5e9e462629..c05135cd53fe 100644
--- a/arch/arm64/kernel/cpu_errata.c
+++ b/arch/arm64/kernel/cpu_errata.c@@ -124,6 +124,13 @@ 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) \ + .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) || \
--
2.21.0.rc0.269.g1a574e7a288b
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