From mboxrd@z Thu Jan 1 00:00:00 1970 From: marc.zyngier@arm.com (Marc Zyngier) Date: Mon, 6 Mar 2017 11:26:18 +0000 Subject: [PATCH 13/17] arm64: cpu_errata: Allow an erratum to be match for all revisions of a core In-Reply-To: <20170306112622.13853-1-marc.zyngier@arm.com> References: <20170306112622.13853-1-marc.zyngier@arm.com> Message-ID: <20170306112622.13853-14-marc.zyngier@arm.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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. Signed-off-by: Marc Zyngier --- 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 f6cc67e7626e..2be1d1c05303 100644 --- a/arch/arm64/kernel/cpu_errata.c +++ b/arch/arm64/kernel/cpu_errata.c @@ -53,6 +53,13 @@ static int cpu_enable_trap_ctr_access(void *__unused) .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