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arm64: cpu_errata: Allow an erratum to be match for all revisions of a core

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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.

Change-Id: Icbb685f79205ba45f9c990d83cf961616b0d96b7
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>
Git-commit: 06f1494f837da8997d670a1ba87add7963b08922
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
[sramana@codeaurora.org: Fix merge conflicts]
Signed-off-by: Srinivas Ramana <sramana@codeaurora.org>
This commit is contained in:
Marc Zyngier 2017-02-01 14:38:46 +00:00 • committed by Gerrit - the friendly Code Review server
parent 4e56397ea6
commit cdf382ed61
1 changed files with 6 additions and 0 deletions
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6
arch/arm64/kernel/cpu_errata.c
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@ -111,6 +111,12 @@ static void __maybe_unused install_bp_hardening_cb(
.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) || \