From: Marc Zyngier <maz@kernel.org>
To: linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org,
Daniel Lezcano <daniel.lezcano@linaro.org>,
Will Deacon <will@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>,
Thomas Gleixner <tglx@linutronix.de>,
Peter Shier <pshier@google.com>,
Raghavendra Rao Ananta <rananta@google.com>,
Ricardo Koller <ricarkol@google.com>,
Oliver Upton <oupton@google.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Linus Walleij <linus.walleij@linaro.org>,
kernel-team@android.com
Subject: [PATCH v4 14/17] arm64: Add a capability for FEAT_ECV
Date: Sun, 17 Oct 2021 13:42:22 +0100 [thread overview]
Message-ID: <20211017124225.3018098-15-maz@kernel.org> (raw)
In-Reply-To: <20211017124225.3018098-1-maz@kernel.org>
Add a new capability to detect the Enhanced Counter Virtualization
feature (FEAT_ECV).
Reviewed-by: Oliver Upton <oupton@google.com>
Acked-by: Will Deacon <will@kernel.org>
Signed-off-by: Marc Zyngier <maz@kernel.org>
---
arch/arm64/kernel/cpufeature.c | 10 ++++++++++
arch/arm64/tools/cpucaps | 1 +
2 files changed, 11 insertions(+)
diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c
index f8a3067d10c6..26b11ce8fff6 100644
--- a/arch/arm64/kernel/cpufeature.c
+++ b/arch/arm64/kernel/cpufeature.c
@@ -1926,6 +1926,16 @@ static const struct arm64_cpu_capabilities arm64_features[] = {
.sign = FTR_UNSIGNED,
.min_field_value = 1,
},
+ {
+ .desc = "Enhanced Counter Virtualization",
+ .capability = ARM64_HAS_ECV,
+ .type = ARM64_CPUCAP_SYSTEM_FEATURE,
+ .matches = has_cpuid_feature,
+ .sys_reg = SYS_ID_AA64MMFR0_EL1,
+ .field_pos = ID_AA64MMFR0_ECV_SHIFT,
+ .sign = FTR_UNSIGNED,
+ .min_field_value = 1,
+ },
#ifdef CONFIG_ARM64_PAN
{
.desc = "Privileged Access Never",
diff --git a/arch/arm64/tools/cpucaps b/arch/arm64/tools/cpucaps
index 49305c2e6dfd..7a7c58acd8f0 100644
--- a/arch/arm64/tools/cpucaps
+++ b/arch/arm64/tools/cpucaps
@@ -18,6 +18,7 @@ HAS_CRC32
HAS_DCPODP
HAS_DCPOP
HAS_E0PD
+HAS_ECV
HAS_EPAN
HAS_GENERIC_AUTH
HAS_GENERIC_AUTH_ARCH
--
2.30.2
WARNING: multiple messages have this Message-ID (diff)
From: Marc Zyngier <maz@kernel.org>
To: linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org,
Daniel Lezcano <daniel.lezcano@linaro.org>,
Will Deacon <will@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>,
Thomas Gleixner <tglx@linutronix.de>,
Peter Shier <pshier@google.com>,
Raghavendra Rao Ananta <rananta@google.com>,
Ricardo Koller <ricarkol@google.com>,
Oliver Upton <oupton@google.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Linus Walleij <linus.walleij@linaro.org>,
kernel-team@android.com
Subject: [PATCH v4 14/17] arm64: Add a capability for FEAT_ECV
Date: Sun, 17 Oct 2021 13:42:22 +0100 [thread overview]
Message-ID: <20211017124225.3018098-15-maz@kernel.org> (raw)
In-Reply-To: <20211017124225.3018098-1-maz@kernel.org>
Add a new capability to detect the Enhanced Counter Virtualization
feature (FEAT_ECV).
Reviewed-by: Oliver Upton <oupton@google.com>
Acked-by: Will Deacon <will@kernel.org>
Signed-off-by: Marc Zyngier <maz@kernel.org>
---
arch/arm64/kernel/cpufeature.c | 10 ++++++++++
arch/arm64/tools/cpucaps | 1 +
2 files changed, 11 insertions(+)
diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c
index f8a3067d10c6..26b11ce8fff6 100644
--- a/arch/arm64/kernel/cpufeature.c
+++ b/arch/arm64/kernel/cpufeature.c
@@ -1926,6 +1926,16 @@ static const struct arm64_cpu_capabilities arm64_features[] = {
.sign = FTR_UNSIGNED,
.min_field_value = 1,
},
+ {
+ .desc = "Enhanced Counter Virtualization",
+ .capability = ARM64_HAS_ECV,
+ .type = ARM64_CPUCAP_SYSTEM_FEATURE,
+ .matches = has_cpuid_feature,
+ .sys_reg = SYS_ID_AA64MMFR0_EL1,
+ .field_pos = ID_AA64MMFR0_ECV_SHIFT,
+ .sign = FTR_UNSIGNED,
+ .min_field_value = 1,
+ },
#ifdef CONFIG_ARM64_PAN
{
.desc = "Privileged Access Never",
diff --git a/arch/arm64/tools/cpucaps b/arch/arm64/tools/cpucaps
index 49305c2e6dfd..7a7c58acd8f0 100644
--- a/arch/arm64/tools/cpucaps
+++ b/arch/arm64/tools/cpucaps
@@ -18,6 +18,7 @@ HAS_CRC32
HAS_DCPODP
HAS_DCPOP
HAS_E0PD
+HAS_ECV
HAS_EPAN
HAS_GENERIC_AUTH
HAS_GENERIC_AUTH_ARCH
--
2.30.2
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next prev parent reply other threads:[~2021-10-17 12:46 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-17 12:42 [PATCH v4 00/17] clocksource/arm_arch_timer: Add basic ARMv8.6 support Marc Zyngier
2021-10-17 12:42 ` Marc Zyngier
2021-10-17 12:42 ` [PATCH v4 01/17] clocksource/arm_arch_timer: Add build-time guards for unhandled register accesses Marc Zyngier
2021-10-17 12:42 ` Marc Zyngier
2021-10-24 15:40 ` [tip: timers/core] " tip-bot2 for Marc Zyngier
2021-10-17 12:42 ` [PATCH v4 02/17] clocksource/arm_arch_timer: Drop CNT*_TVAL read accessors Marc Zyngier
2021-10-17 12:42 ` Marc Zyngier
2021-10-24 15:40 ` [tip: timers/core] clocksource/drivers/arm_arch_timer: " tip-bot2 for Marc Zyngier
2021-10-17 12:42 ` [PATCH v4 03/17] clocksource/arm_arch_timer: Extend write side of timer register accessors to u64 Marc Zyngier
2021-10-17 12:42 ` Marc Zyngier
2021-10-24 15:40 ` [tip: timers/core] clocksource/drivers/arm_arch_timer: " tip-bot2 for Marc Zyngier
2021-10-17 12:42 ` [PATCH v4 04/17] clocksource/arm_arch_timer: Move system register timer programming over to CVAL Marc Zyngier
2021-10-17 12:42 ` Marc Zyngier
2021-10-24 15:40 ` [tip: timers/core] clocksource/drivers/arm_arch_timer: " tip-bot2 for Marc Zyngier
2021-10-17 12:42 ` [PATCH v4 05/17] clocksource/arm_arch_timer: Move drop _tval from erratum function names Marc Zyngier
2021-10-17 12:42 ` Marc Zyngier
2021-10-24 15:40 ` [tip: timers/core] clocksource/drivers/arm_arch_timer: " tip-bot2 for Marc Zyngier
2021-10-17 12:42 ` [PATCH v4 06/17] clocksource/arm_arch_timer: Fix MMIO base address vs callback ordering issue Marc Zyngier
2021-10-17 12:42 ` Marc Zyngier
2021-10-24 15:40 ` [tip: timers/core] clocksource/drivers/arm_arch_timer: " tip-bot2 for Marc Zyngier
2021-10-17 12:42 ` [PATCH v4 07/17] clocksource/arm_arch_timer: Move MMIO timer programming over to CVAL Marc Zyngier
2021-10-17 12:42 ` Marc Zyngier
2021-10-24 15:40 ` [tip: timers/core] clocksource/drivers/arm_arch_timer: " tip-bot2 for Marc Zyngier
2021-10-17 12:42 ` [PATCH v4 08/17] clocksource/arm_arch_timer: Advertise 56bit timer to the core code Marc Zyngier
2021-10-17 12:42 ` Marc Zyngier
2021-10-24 15:40 ` [tip: timers/core] clocksource/drivers/arm_arch_timer: " tip-bot2 for Marc Zyngier
2021-10-17 12:42 ` [PATCH v4 09/17] clocksource/arm_arch_timer: Work around broken CVAL implementations Marc Zyngier
2021-10-17 12:42 ` Marc Zyngier
2021-10-24 15:40 ` [tip: timers/core] clocksource/drivers/arm_arch_timer: " tip-bot2 for Marc Zyngier
2021-10-17 12:42 ` [PATCH v4 10/17] clocksource/arm_arch_timer: Remove any trace of the TVAL programming interface Marc Zyngier
2021-10-17 12:42 ` Marc Zyngier
2021-10-24 15:40 ` [tip: timers/core] clocksource/drivers/arm_arch_timer: " tip-bot2 for Marc Zyngier
2021-10-17 12:42 ` [PATCH v4 11/17] clocksource/arm_arch_timer: Drop unnecessary ISB on CVAL programming Marc Zyngier
2021-10-17 12:42 ` Marc Zyngier
2021-10-24 15:39 ` [tip: timers/core] clocksource/drivers/arm_arch_timer: " tip-bot2 for Marc Zyngier
2021-10-17 12:42 ` [PATCH v4 12/17] clocksource/arm_arch_timer: Fix masking for high freq counters Marc Zyngier
2021-10-17 12:42 ` Marc Zyngier
2021-10-17 12:42 ` [PATCH v4 13/17] clocksource/arch_arm_timer: Move workaround synchronisation around Marc Zyngier
2021-10-17 12:42 ` Marc Zyngier
2021-10-24 15:39 ` [tip: timers/core] clocksource/drivers/arch_arm_timer: " tip-bot2 for Marc Zyngier
2021-10-17 12:42 ` Marc Zyngier [this message]
2021-10-17 12:42 ` [PATCH v4 14/17] arm64: Add a capability for FEAT_ECV Marc Zyngier
2021-10-17 12:42 ` [PATCH v4 15/17] arm64: Add CNT{P,V}CTSS_EL0 alternatives to cnt{p,v}ct_el0 Marc Zyngier
2021-10-17 12:42 ` [PATCH v4 15/17] arm64: Add CNT{P, V}CTSS_EL0 alternatives to cnt{p, v}ct_el0 Marc Zyngier
2021-10-17 12:42 ` [PATCH v4 16/17] arm64: Add handling of CNTVCTSS traps Marc Zyngier
2021-10-17 12:42 ` Marc Zyngier
2021-10-17 12:42 ` [PATCH v4 17/17] arm64: Add HWCAP for self-synchronising virtual counter Marc Zyngier
2021-10-17 12:42 ` Marc Zyngier
2021-10-19 12:20 ` [PATCH v4 00/17] clocksource/arm_arch_timer: Add basic ARMv8.6 support Will Deacon
2021-10-19 12:20 ` Will Deacon
2021-10-24 15:40 ` [tip: timers/core] Merge branch 'timers/drivers/armv8.6_arch_timer' into timers/drivers/next tip-bot2 for Daniel Lezcano
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