From: Mark Brown <broonie@kernel.org>
To: Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>, Marc Zyngier <maz@kernel.org>,
Shuah Khan <skhan@linuxfoundation.org>,
Shuah Khan <shuah@kernel.org>
Cc: Basant Kumar Dwivedi <Basant.KumarDwivedi@arm.com>,
Luis Machado <luis.machado@arm.com>,
Szabolcs Nagy <szabolcs.nagy@arm.com>,
Mark Brown <broonie@kernel.org>,
linux-arm-kernel@lists.infradead.org,
linux-kselftest@vger.kernel.org,
Alan Hayward <alan.hayward@arm.com>,
kvmarm@lists.cs.columbia.edu,
Salil Akerkar <Salil.Akerkar@arm.com>
Subject: [PATCH v8 02/38] arm64: Add feature detection for fine grained traps
Date: Tue, 25 Jan 2022 00:10:38 +0000 [thread overview]
Message-ID: <20220125001114.193425-3-broonie@kernel.org> (raw)
In-Reply-To: <20220125001114.193425-1-broonie@kernel.org>
Some of the traps for nVHE SME support are provided as fine grained traps
so add detection of fine grained traps in order to allow us to guard usage.
Signed-off-by: Mark Brown <broonie@kernel.org>
---
arch/arm64/kernel/cpufeature.c | 11 +++++++++++
arch/arm64/tools/cpucaps | 1 +
2 files changed, 12 insertions(+)
diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c
index d9f09e40aaf6..ec060db1dcf0 100644
--- a/arch/arm64/kernel/cpufeature.c
+++ b/arch/arm64/kernel/cpufeature.c
@@ -2400,6 +2400,17 @@ static const struct arm64_cpu_capabilities arm64_features[] = {
.matches = has_cpuid_feature,
.min_field_value = 1,
},
+ {
+ .desc = "Fine Grained Traps",
+ .type = ARM64_CPUCAP_SYSTEM_FEATURE,
+ .capability = ARM64_HAS_FGT,
+ .sys_reg = SYS_ID_AA64MMFR0_EL1,
+ .sign = FTR_UNSIGNED,
+ .field_pos = ID_AA64MMFR0_FGT_SHIFT,
+ .field_width = 4,
+ .min_field_value = 1,
+ .matches = has_cpuid_feature,
+ },
{},
};
diff --git a/arch/arm64/tools/cpucaps b/arch/arm64/tools/cpucaps
index 870c39537dd0..b3ada80aa48d 100644
--- a/arch/arm64/tools/cpucaps
+++ b/arch/arm64/tools/cpucaps
@@ -20,6 +20,7 @@ HAS_DCPOP
HAS_E0PD
HAS_ECV
HAS_EPAN
+HAS_FGT
HAS_GENERIC_AUTH
HAS_GENERIC_AUTH_ARCH
HAS_GENERIC_AUTH_IMP_DEF
--
2.30.2
_______________________________________________
kvmarm mailing list
kvmarm@lists.cs.columbia.edu
https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
WARNING: multiple messages have this Message-ID (diff)
From: Mark Brown <broonie@kernel.org>
To: Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>, Marc Zyngier <maz@kernel.org>,
Shuah Khan <skhan@linuxfoundation.org>,
Shuah Khan <shuah@kernel.org>
Cc: Alan Hayward <alan.hayward@arm.com>,
Luis Machado <luis.machado@arm.com>,
Salil Akerkar <Salil.Akerkar@arm.com>,
Basant Kumar Dwivedi <Basant.KumarDwivedi@arm.com>,
Szabolcs Nagy <szabolcs.nagy@arm.com>,
James Morse <james.morse@arm.com>,
Alexandru Elisei <alexandru.elisei@arm.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
linux-arm-kernel@lists.infradead.org,
linux-kselftest@vger.kernel.org, kvmarm@lists.cs.columbia.edu,
Mark Brown <broonie@kernel.org>
Subject: [PATCH v8 02/38] arm64: Add feature detection for fine grained traps
Date: Tue, 25 Jan 2022 00:10:38 +0000 [thread overview]
Message-ID: <20220125001114.193425-3-broonie@kernel.org> (raw)
In-Reply-To: <20220125001114.193425-1-broonie@kernel.org>
Some of the traps for nVHE SME support are provided as fine grained traps
so add detection of fine grained traps in order to allow us to guard usage.
Signed-off-by: Mark Brown <broonie@kernel.org>
---
arch/arm64/kernel/cpufeature.c | 11 +++++++++++
arch/arm64/tools/cpucaps | 1 +
2 files changed, 12 insertions(+)
diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c
index d9f09e40aaf6..ec060db1dcf0 100644
--- a/arch/arm64/kernel/cpufeature.c
+++ b/arch/arm64/kernel/cpufeature.c
@@ -2400,6 +2400,17 @@ static const struct arm64_cpu_capabilities arm64_features[] = {
.matches = has_cpuid_feature,
.min_field_value = 1,
},
+ {
+ .desc = "Fine Grained Traps",
+ .type = ARM64_CPUCAP_SYSTEM_FEATURE,
+ .capability = ARM64_HAS_FGT,
+ .sys_reg = SYS_ID_AA64MMFR0_EL1,
+ .sign = FTR_UNSIGNED,
+ .field_pos = ID_AA64MMFR0_FGT_SHIFT,
+ .field_width = 4,
+ .min_field_value = 1,
+ .matches = has_cpuid_feature,
+ },
{},
};
diff --git a/arch/arm64/tools/cpucaps b/arch/arm64/tools/cpucaps
index 870c39537dd0..b3ada80aa48d 100644
--- a/arch/arm64/tools/cpucaps
+++ b/arch/arm64/tools/cpucaps
@@ -20,6 +20,7 @@ HAS_DCPOP
HAS_E0PD
HAS_ECV
HAS_EPAN
+HAS_FGT
HAS_GENERIC_AUTH
HAS_GENERIC_AUTH_ARCH
HAS_GENERIC_AUTH_IMP_DEF
--
2.30.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
WARNING: multiple messages have this Message-ID (diff)
From: Mark Brown <broonie@kernel.org>
To: Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>, Marc Zyngier <maz@kernel.org>,
Shuah Khan <skhan@linuxfoundation.org>,
Shuah Khan <shuah@kernel.org>
Cc: Alan Hayward <alan.hayward@arm.com>,
Luis Machado <luis.machado@arm.com>,
Salil Akerkar <Salil.Akerkar@arm.com>,
Basant Kumar Dwivedi <Basant.KumarDwivedi@arm.com>,
Szabolcs Nagy <szabolcs.nagy@arm.com>,
James Morse <james.morse@arm.com>,
Alexandru Elisei <alexandru.elisei@arm.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
linux-arm-kernel@lists.infradead.org,
linux-kselftest@vger.kernel.org, kvmarm@lists.cs.columbia.edu,
Mark Brown <broonie@kernel.org>
Subject: [PATCH v8 02/38] arm64: Add feature detection for fine grained traps
Date: Tue, 25 Jan 2022 00:10:38 +0000 [thread overview]
Message-ID: <20220125001114.193425-3-broonie@kernel.org> (raw)
In-Reply-To: <20220125001114.193425-1-broonie@kernel.org>
Some of the traps for nVHE SME support are provided as fine grained traps
so add detection of fine grained traps in order to allow us to guard usage.
Signed-off-by: Mark Brown <broonie@kernel.org>
---
arch/arm64/kernel/cpufeature.c | 11 +++++++++++
arch/arm64/tools/cpucaps | 1 +
2 files changed, 12 insertions(+)
diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c
index d9f09e40aaf6..ec060db1dcf0 100644
--- a/arch/arm64/kernel/cpufeature.c
+++ b/arch/arm64/kernel/cpufeature.c
@@ -2400,6 +2400,17 @@ static const struct arm64_cpu_capabilities arm64_features[] = {
.matches = has_cpuid_feature,
.min_field_value = 1,
},
+ {
+ .desc = "Fine Grained Traps",
+ .type = ARM64_CPUCAP_SYSTEM_FEATURE,
+ .capability = ARM64_HAS_FGT,
+ .sys_reg = SYS_ID_AA64MMFR0_EL1,
+ .sign = FTR_UNSIGNED,
+ .field_pos = ID_AA64MMFR0_FGT_SHIFT,
+ .field_width = 4,
+ .min_field_value = 1,
+ .matches = has_cpuid_feature,
+ },
{},
};
diff --git a/arch/arm64/tools/cpucaps b/arch/arm64/tools/cpucaps
index 870c39537dd0..b3ada80aa48d 100644
--- a/arch/arm64/tools/cpucaps
+++ b/arch/arm64/tools/cpucaps
@@ -20,6 +20,7 @@ HAS_DCPOP
HAS_E0PD
HAS_ECV
HAS_EPAN
+HAS_FGT
HAS_GENERIC_AUTH
HAS_GENERIC_AUTH_ARCH
HAS_GENERIC_AUTH_IMP_DEF
--
2.30.2
next prev parent reply other threads:[~2022-01-25 0:15 UTC|newest]
Thread overview: 154+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-25 0:10 [PATCH v8 00/38] arm64/sme: Initial support for the Scalable Matrix Extension Mark Brown
2022-01-25 0:10 ` Mark Brown
2022-01-25 0:10 ` Mark Brown
2022-01-25 0:10 ` [PATCH v8 01/38] arm64: cpufeature: Always specify and use a field width for capabilities Mark Brown
2022-01-25 0:10 ` Mark Brown
2022-01-25 0:10 ` Mark Brown
2022-01-25 10:57 ` Suzuki K Poulose
2022-01-25 10:57 ` Suzuki K Poulose
2022-01-25 10:57 ` Suzuki K Poulose
2022-01-25 12:10 ` Mark Brown
2022-01-25 12:10 ` Mark Brown
2022-01-25 12:10 ` Mark Brown
2022-01-25 0:10 ` Mark Brown [this message]
2022-01-25 0:10 ` [PATCH v8 02/38] arm64: Add feature detection for fine grained traps Mark Brown
2022-01-25 0:10 ` Mark Brown
2022-01-25 0:10 ` [PATCH v8 03/38] kselftest/arm64: Remove local ARRAY_SIZE() definitions Mark Brown
2022-01-25 0:10 ` Mark Brown
2022-01-25 0:10 ` Mark Brown
2022-01-25 0:10 ` [PATCH v8 04/38] arm64/sme: Provide ABI documentation for SME Mark Brown
2022-01-25 0:10 ` Mark Brown
2022-01-25 0:10 ` Mark Brown
2022-01-25 0:10 ` [PATCH v8 05/38] arm64/sme: System register and exception syndrome definitions Mark Brown
2022-01-25 0:10 ` Mark Brown
2022-01-25 0:10 ` Mark Brown
2022-01-25 11:25 ` Marc Zyngier
2022-01-25 11:25 ` Marc Zyngier
2022-01-25 11:25 ` Marc Zyngier
2022-01-25 12:15 ` Mark Brown
2022-01-25 12:15 ` Mark Brown
2022-01-25 12:15 ` Mark Brown
2022-01-25 0:10 ` [PATCH v8 06/38] arm64/sme: Manually encode SME instructions Mark Brown
2022-01-25 0:10 ` Mark Brown
2022-01-25 0:10 ` Mark Brown
2022-01-25 0:10 ` [PATCH v8 07/38] arm64/sme: Early CPU setup for SME Mark Brown
2022-01-25 0:10 ` Mark Brown
2022-01-25 0:10 ` Mark Brown
2022-01-25 0:10 ` [PATCH v8 08/38] arm64/sme: Basic enumeration support Mark Brown
2022-01-25 0:10 ` Mark Brown
2022-01-25 0:10 ` Mark Brown
2022-01-25 0:10 ` [PATCH v8 09/38] arm64/sme: Identify supported SME vector lengths at boot Mark Brown
2022-01-25 0:10 ` Mark Brown
2022-01-25 0:10 ` Mark Brown
2022-01-25 0:10 ` [PATCH v8 10/38] arm64/sme: Implement sysctl to set the default vector length Mark Brown
2022-01-25 0:10 ` Mark Brown
2022-01-25 0:10 ` Mark Brown
2022-01-25 0:10 ` [PATCH v8 11/38] arm64/sme: Implement vector length configuration prctl()s Mark Brown
2022-01-25 0:10 ` Mark Brown
2022-01-25 0:10 ` Mark Brown
2022-01-25 0:10 ` [PATCH v8 12/38] arm64/sme: Implement support for TPIDR2 Mark Brown
2022-01-25 0:10 ` Mark Brown
2022-01-25 0:10 ` Mark Brown
2022-01-25 0:10 ` [PATCH v8 13/38] arm64/sme: Implement SVCR context switching Mark Brown
2022-01-25 0:10 ` Mark Brown
2022-01-25 0:10 ` Mark Brown
2022-01-25 0:10 ` [PATCH v8 14/38] arm64/sme: Implement streaming SVE " Mark Brown
2022-01-25 0:10 ` Mark Brown
2022-01-25 0:10 ` Mark Brown
2022-01-25 0:10 ` [PATCH v8 15/38] arm64/sme: Implement ZA " Mark Brown
2022-01-25 0:10 ` Mark Brown
2022-01-25 0:10 ` Mark Brown
2022-01-25 0:10 ` [PATCH v8 16/38] arm64/sme: Implement traps and syscall handling for SME Mark Brown
2022-01-25 0:10 ` Mark Brown
2022-01-25 0:10 ` Mark Brown
2022-01-25 0:10 ` [PATCH v8 17/38] arm64/sme: Disable ZA and streaming mode when handling signals Mark Brown
2022-01-25 0:10 ` Mark Brown
2022-01-25 0:10 ` Mark Brown
2022-01-25 0:10 ` [PATCH v8 18/38] arm64/sme: Implement streaming SVE signal handling Mark Brown
2022-01-25 0:10 ` Mark Brown
2022-01-25 0:10 ` Mark Brown
2022-01-25 0:10 ` [PATCH v8 19/38] arm64/sme: Implement ZA " Mark Brown
2022-01-25 0:10 ` Mark Brown
2022-01-25 0:10 ` Mark Brown
2022-01-25 0:10 ` [PATCH v8 20/38] arm64/sme: Implement ptrace support for streaming mode SVE registers Mark Brown
2022-01-25 0:10 ` Mark Brown
2022-01-25 0:10 ` Mark Brown
2022-01-25 0:10 ` [PATCH v8 21/38] arm64/sme: Add ptrace support for ZA Mark Brown
2022-01-25 0:10 ` Mark Brown
2022-01-25 0:10 ` Mark Brown
2022-01-25 0:10 ` [PATCH v8 22/38] arm64/sme: Disable streaming mode and ZA when flushing CPU state Mark Brown
2022-01-25 0:10 ` Mark Brown
2022-01-25 0:10 ` Mark Brown
2022-01-25 0:10 ` [PATCH v8 23/38] arm64/sme: Save and restore streaming mode over EFI runtime calls Mark Brown
2022-01-25 0:10 ` Mark Brown
2022-01-25 0:10 ` Mark Brown
2022-01-25 0:11 ` [PATCH v8 24/38] KVM: arm64: Hide SME system registers from guests Mark Brown
2022-01-25 0:11 ` Mark Brown
2022-01-25 0:11 ` Mark Brown
2022-01-25 0:11 ` [PATCH v8 25/38] KVM: arm64: Trap SME usage in guest Mark Brown
2022-01-25 0:11 ` Mark Brown
2022-01-25 0:11 ` Mark Brown
2022-01-25 11:27 ` Marc Zyngier
2022-01-25 11:27 ` Marc Zyngier
2022-01-25 11:27 ` Marc Zyngier
2022-01-25 12:25 ` Mark Brown
2022-01-25 12:25 ` Mark Brown
2022-01-25 12:25 ` Mark Brown
2022-01-25 13:21 ` Marc Zyngier
2022-01-25 13:21 ` Marc Zyngier
2022-01-25 13:21 ` Marc Zyngier
2022-01-25 14:25 ` Mark Brown
2022-01-25 14:25 ` Mark Brown
2022-01-25 14:25 ` Mark Brown
2022-01-25 12:29 ` kernel test robot
2022-01-25 0:11 ` [PATCH v8 26/38] KVM: arm64: Handle SME host state when running guests Mark Brown
2022-01-25 0:11 ` Mark Brown
2022-01-25 0:11 ` Mark Brown
2022-01-25 11:59 ` Marc Zyngier
2022-01-25 11:59 ` Marc Zyngier
2022-01-25 11:59 ` Marc Zyngier
2022-01-25 12:52 ` Mark Brown
2022-01-25 12:52 ` Mark Brown
2022-01-25 12:52 ` Mark Brown
2022-01-25 13:22 ` Marc Zyngier
2022-01-25 13:22 ` Marc Zyngier
2022-01-25 13:22 ` Marc Zyngier
2022-01-25 13:34 ` Mark Brown
2022-01-25 13:34 ` Mark Brown
2022-01-25 13:34 ` Mark Brown
2022-01-25 0:11 ` [PATCH v8 27/38] arm64/sme: Provide Kconfig for SME Mark Brown
2022-01-25 0:11 ` Mark Brown
2022-01-25 0:11 ` Mark Brown
2022-01-25 0:11 ` [PATCH v8 28/38] kselftest/arm64: sme: Add streaming SME support to vlset Mark Brown
2022-01-25 0:11 ` Mark Brown
2022-01-25 0:11 ` Mark Brown
2022-01-25 0:11 ` [PATCH v8 29/38] kselftest/arm64: Add tests for TPIDR2 Mark Brown
2022-01-25 0:11 ` Mark Brown
2022-01-25 0:11 ` Mark Brown
2022-01-25 0:11 ` [PATCH v8 30/38] kselftest/arm64: Extend vector configuration API tests to cover SME Mark Brown
2022-01-25 0:11 ` Mark Brown
2022-01-25 0:11 ` Mark Brown
2022-01-25 0:11 ` [PATCH v8 31/38] kselftest/arm64: sme: Provide streaming mode SVE stress test Mark Brown
2022-01-25 0:11 ` Mark Brown
2022-01-25 0:11 ` Mark Brown
2022-01-25 0:11 ` [PATCH v8 32/38] kselftest/arm64: signal: Allow tests to be incompatible with features Mark Brown
2022-01-25 0:11 ` Mark Brown
2022-01-25 0:11 ` Mark Brown
2022-01-25 0:11 ` [PATCH v8 33/38] kselftest/arm64: signal: Handle ZA signal context in core code Mark Brown
2022-01-25 0:11 ` Mark Brown
2022-01-25 0:11 ` Mark Brown
2022-01-25 0:11 ` [PATCH v8 34/38] kselftest/arm64: Add stress test for SME ZA context switching Mark Brown
2022-01-25 0:11 ` Mark Brown
2022-01-25 0:11 ` Mark Brown
2022-01-25 0:11 ` [PATCH v8 35/38] kselftest/arm64: signal: Add SME signal handling tests Mark Brown
2022-01-25 0:11 ` Mark Brown
2022-01-25 0:11 ` Mark Brown
2022-01-25 0:11 ` [PATCH v8 36/38] kselftest/arm64: Add streaming SVE to SVE ptrace tests Mark Brown
2022-01-25 0:11 ` Mark Brown
2022-01-25 0:11 ` Mark Brown
2022-01-25 0:11 ` [PATCH v8 37/38] kselftest/arm64: Add coverage for the ZA ptrace interface Mark Brown
2022-01-25 0:11 ` Mark Brown
2022-01-25 0:11 ` Mark Brown
2022-01-25 0:11 ` [PATCH v8 38/38] kselftest/arm64: Add SME support to syscall ABI test Mark Brown
2022-01-25 0:11 ` Mark Brown
2022-01-25 0:11 ` Mark Brown
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