From: Marc Zyngier marc.zyngier@arm.com
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 tglx@linutronix.de Acked-by: Mark Rutland mark.rutland@arm.com Acked-by: Daniel Lezcano daniel.lezcano@linaro.org Reviewed-by: Suzuki K Poulose suzuki.poulose@arm.com Signed-off-by: Marc Zyngier marc.zyngier@arm.com Signed-off-by: Mark Rutland mark.rutland@arm.com [v4.9 backport] --- 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 3884c4398597..b9fcbd155df2 100644 --- a/arch/arm64/kernel/cpu_errata.c +++ b/arch/arm64/kernel/cpu_errata.c @@ -127,6 +127,13 @@ 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) || \