From: Marc Zyngier <marc.zyngier@xxxxxxx>
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@xxxxxxxxxxxxx>
Acked-by: Mark Rutland <mark.rutland@xxxxxxx>
Acked-by: Daniel Lezcano <daniel.lezcano@xxxxxxxxxx>
Reviewed-by: Suzuki K Poulose <suzuki.poulose@xxxxxxx>
Signed-off-by: Marc Zyngier <marc.zyngier@xxxxxxx>
Signed-off-by: Mark Rutland <mark.rutland@xxxxxxx> [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) || \
--
2.11.0