From: Marc Zyngier <marc.zyngier@arm.com> To: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: Mark Rutland <mark.rutland@arm.com>, Catalin Marinas <catalin.marinas@arm.com>, Daniel Lezcano <daniel.lezcano@linaro.org>, Will Deacon <will.deacon@arm.com>, Scott Wood <oss@buserror.net>, Hanjun Guo <hanjun.guo@linaro.org>, Ding Tianhong <dingtianhong@huawei.com>, dann frazier <dann.frazier@canonical.com> Subject: [PATCH v2 01/18] arm64: Allow checking of a CPU-local erratum Date: Mon, 20 Mar 2017 17:48:12 +0000 [thread overview] Message-ID: <20170320174829.28182-2-marc.zyngier@arm.com> (raw) In-Reply-To: <20170320174829.28182-1-marc.zyngier@arm.com> this_cpu_has_cap() only checks the feature array, and not the errata one. In order to be able to check for a CPU-local erratum, allow it to inspect the latter as well. This is consistent with cpus_have_cap()'s behaviour, which includes errata already. Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> --- arch/arm64/kernel/cpufeature.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c index abda8e861865..6eb77ae99b79 100644 --- a/arch/arm64/kernel/cpufeature.c +++ b/arch/arm64/kernel/cpufeature.c @@ -1090,20 +1090,29 @@ static void __init setup_feature_capabilities(void) * Check if the current CPU has a given feature capability. * Should be called from non-preemptible context. */ -bool this_cpu_has_cap(unsigned int cap) +static bool __this_cpu_has_cap(const struct arm64_cpu_capabilities *cap_array, + unsigned int cap) { const struct arm64_cpu_capabilities *caps; if (WARN_ON(preemptible())) return false; - for (caps = arm64_features; caps->desc; caps++) + for (caps = cap_array; caps->desc; caps++) if (caps->capability == cap && caps->matches) return caps->matches(caps, SCOPE_LOCAL_CPU); return false; } +extern const struct arm64_cpu_capabilities arm64_errata[]; + +bool this_cpu_has_cap(unsigned int cap) +{ + return (__this_cpu_has_cap(arm64_features, cap) || + __this_cpu_has_cap(arm64_errata, cap)); +} + void __init setup_cpu_features(void) { u32 cwg; -- 2.11.0
WARNING: multiple messages have this Message-ID (diff)
From: marc.zyngier@arm.com (Marc Zyngier) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH v2 01/18] arm64: Allow checking of a CPU-local erratum Date: Mon, 20 Mar 2017 17:48:12 +0000 [thread overview] Message-ID: <20170320174829.28182-2-marc.zyngier@arm.com> (raw) In-Reply-To: <20170320174829.28182-1-marc.zyngier@arm.com> this_cpu_has_cap() only checks the feature array, and not the errata one. In order to be able to check for a CPU-local erratum, allow it to inspect the latter as well. This is consistent with cpus_have_cap()'s behaviour, which includes errata already. Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> --- arch/arm64/kernel/cpufeature.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c index abda8e861865..6eb77ae99b79 100644 --- a/arch/arm64/kernel/cpufeature.c +++ b/arch/arm64/kernel/cpufeature.c @@ -1090,20 +1090,29 @@ static void __init setup_feature_capabilities(void) * Check if the current CPU has a given feature capability. * Should be called from non-preemptible context. */ -bool this_cpu_has_cap(unsigned int cap) +static bool __this_cpu_has_cap(const struct arm64_cpu_capabilities *cap_array, + unsigned int cap) { const struct arm64_cpu_capabilities *caps; if (WARN_ON(preemptible())) return false; - for (caps = arm64_features; caps->desc; caps++) + for (caps = cap_array; caps->desc; caps++) if (caps->capability == cap && caps->matches) return caps->matches(caps, SCOPE_LOCAL_CPU); return false; } +extern const struct arm64_cpu_capabilities arm64_errata[]; + +bool this_cpu_has_cap(unsigned int cap) +{ + return (__this_cpu_has_cap(arm64_features, cap) || + __this_cpu_has_cap(arm64_errata, cap)); +} + void __init setup_cpu_features(void) { u32 cwg; -- 2.11.0
next prev parent reply other threads:[~2017-03-20 17:48 UTC|newest] Thread overview: 88+ messages / expand[flat|nested] mbox.gz Atom feed top 2017-03-20 17:48 [PATCH v2 00/18] clocksource/arch_timer: Errata workaround infrastructure rework Marc Zyngier 2017-03-20 17:48 ` Marc Zyngier 2017-03-20 17:48 ` Marc Zyngier [this message] 2017-03-20 17:48 ` [PATCH v2 01/18] arm64: Allow checking of a CPU-local erratum Marc Zyngier 2017-03-22 9:22 ` Daniel Lezcano 2017-03-22 9:22 ` Daniel Lezcano 2017-03-20 17:48 ` [PATCH v2 02/18] arm64: Add CNTVCT_EL0 trap handler Marc Zyngier 2017-03-20 17:48 ` Marc Zyngier 2017-03-20 17:48 ` [PATCH v2 03/18] arm64: Define Cortex-A73 MIDR Marc Zyngier 2017-03-20 17:48 ` Marc Zyngier 2017-03-20 17:48 ` [PATCH v2 04/18] arm64: cpu_errata: Allow an erratum to be match for all revisions of a core Marc Zyngier 2017-03-20 17:48 ` Marc Zyngier 2017-03-22 14:57 ` Daniel Lezcano 2017-03-22 14:57 ` Daniel Lezcano 2017-03-20 17:48 ` [PATCH v2 05/18] arm64: cpu_errata: Add capability to advertise Cortex-A73 erratum 858921 Marc Zyngier 2017-03-20 17:48 ` Marc Zyngier 2017-03-22 15:01 ` Daniel Lezcano 2017-03-22 15:01 ` Daniel Lezcano 2017-03-20 17:48 ` [PATCH v2 06/18] arm64: arch_timer: Add infrastructure for multiple erratum detection methods Marc Zyngier 2017-03-20 17:48 ` Marc Zyngier 2017-03-22 15:41 ` Daniel Lezcano 2017-03-22 15:41 ` Daniel Lezcano 2017-03-22 15:53 ` Marc Zyngier 2017-03-22 15:53 ` Marc Zyngier 2017-03-22 15:59 ` Marc Zyngier 2017-03-22 15:59 ` Marc Zyngier 2017-03-22 16:52 ` Daniel Lezcano 2017-03-22 16:52 ` Daniel Lezcano 2017-03-23 17:30 ` Daniel Lezcano 2017-03-23 17:30 ` Daniel Lezcano 2017-03-24 13:51 ` Marc Zyngier 2017-03-24 13:51 ` Marc Zyngier 2017-03-27 7:56 ` Daniel Lezcano 2017-03-27 7:56 ` Daniel Lezcano 2017-03-28 13:07 ` Marc Zyngier 2017-03-28 13:07 ` Marc Zyngier 2017-03-28 13:34 ` Daniel Lezcano 2017-03-28 13:34 ` Daniel Lezcano 2017-03-28 14:07 ` Marc Zyngier 2017-03-28 14:07 ` Marc Zyngier 2017-03-28 14:36 ` Daniel Lezcano 2017-03-28 14:36 ` Daniel Lezcano 2017-03-28 14:48 ` Marc Zyngier 2017-03-28 14:48 ` Marc Zyngier 2017-03-28 14:55 ` Daniel Lezcano 2017-03-28 14:55 ` Daniel Lezcano 2017-03-28 15:38 ` Marc Zyngier 2017-03-28 15:38 ` Marc Zyngier 2017-03-29 14:27 ` Daniel Lezcano 2017-03-29 14:27 ` Daniel Lezcano 2017-03-29 14:56 ` Marc Zyngier 2017-03-29 14:56 ` Marc Zyngier 2017-03-29 15:12 ` Daniel Lezcano 2017-03-29 15:12 ` Daniel Lezcano 2017-03-24 17:48 ` dann frazier 2017-03-24 17:48 ` dann frazier 2017-03-24 18:00 ` Marc Zyngier 2017-03-24 18:00 ` Marc Zyngier 2017-03-30 9:28 ` Daniel Lezcano 2017-03-30 9:28 ` Daniel Lezcano 2017-03-20 17:48 ` [PATCH v2 07/18] arm64: arch_timer: Add erratum handler for globally defined capability Marc Zyngier 2017-03-20 17:48 ` Marc Zyngier 2017-03-20 17:48 ` [PATCH v2 08/18] arm64: arch_timer: Add erratum handler for CPU-specific capability Marc Zyngier 2017-03-20 17:48 ` Marc Zyngier 2017-03-20 17:48 ` [PATCH v2 09/18] arm64: arch_timer: Move arch_timer_reg_read/write around Marc Zyngier 2017-03-20 17:48 ` Marc Zyngier 2017-03-22 15:47 ` Daniel Lezcano 2017-03-22 15:47 ` Daniel Lezcano 2017-03-20 17:48 ` [PATCH v2 10/18] arm64: arch_timer: Get rid of erratum_workaround_set_sne Marc Zyngier 2017-03-20 17:48 ` Marc Zyngier 2017-03-20 17:48 ` [PATCH v2 11/18] arm64: arch_timer: Rework the set_next_event workarounds Marc Zyngier 2017-03-20 17:48 ` Marc Zyngier 2017-03-20 17:48 ` [PATCH v2 12/18] arm64: arch_timer: Make workaround methods optional Marc Zyngier 2017-03-20 17:48 ` Marc Zyngier 2017-03-20 17:48 ` [PATCH v2 13/18] arm64: arch_timer: Allows a CPU-specific erratum to only affect a subset of CPUs Marc Zyngier 2017-03-20 17:48 ` Marc Zyngier 2017-03-20 17:48 ` [PATCH v2 14/18] arm64: arch_timer: Move clocksource_counter and co around Marc Zyngier 2017-03-20 17:48 ` Marc Zyngier 2017-03-20 17:48 ` [PATCH v2 15/18] arm64: arch_timer: Enable CNTVCT_EL0 trap if workaround is enabled Marc Zyngier 2017-03-20 17:48 ` Marc Zyngier 2017-03-20 17:48 ` [PATCH v2 16/18] arm64: arch_timer: Workaround for Cortex-A73 erratum 858921 Marc Zyngier 2017-03-20 17:48 ` Marc Zyngier 2017-03-20 17:48 ` [PATCH v2 17/18] arm64: arch_timer: Allow erratum matching with ACPI OEM information Marc Zyngier 2017-03-20 17:48 ` Marc Zyngier 2017-03-20 17:48 ` [PATCH v2 18/18] arm64: arch_timer: Add HISILICON_ERRATUM_161010101 ACPI matching data Marc Zyngier 2017-03-20 17:48 ` Marc Zyngier 2017-03-22 13:56 ` [PATCH v2 00/18] clocksource/arch_timer: Errata workaround infrastructure rework Ding Tianhong 2017-03-22 13:56 ` Ding Tianhong
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