[PATCH v2 5/7] KVM: arm64: Limit the debug architecture to ARMv8.0

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From: Marc Zyngier <maz@kernel.org>
To: linux-arm-kernel@lists.infradead.org,
	kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org
Cc: James Morse <james.morse@arm.com>,
	Julien Thierry <julien.thierry.kdev@gmail.com>,
	Suzuki K Poulose <suzuki.poulose@arm.com>,
	Alexandru Elisei <alexandru.elisei@arm.com>,
	Eric Auger <eric.auger@redhat.com>,
	kernel-team@android.com
Subject: [PATCH v2 5/7] KVM: arm64: Limit the debug architecture to ARMv8.0
Date: Mon, 25 Jan 2021 12:26:36 +0000	[thread overview]
Message-ID: <20210125122638.2947058-6-maz@kernel.org> (raw)
In-Reply-To: <20210125122638.2947058-1-maz@kernel.org>

Let's not pretend we support anything but ARMv8.0 as far as the
debug architecture is concerned.

Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
---
 arch/arm64/kvm/sys_regs.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c
index dda16d60197b..8f79ec1fffa7 100644
--- a/arch/arm64/kvm/sys_regs.c
+++ b/arch/arm64/kvm/sys_regs.c
@@ -1048,6 +1048,9 @@ static u64 read_id_reg(const struct kvm_vcpu *vcpu,
 				 FEATURE(ID_AA64ISAR1_GPI));
 		break;
 	case SYS_ID_AA64DFR0_EL1:
+		/* Limit debug to ARMv8.0 */
+		val &= ~FEATURE(ID_AA64DFR0_DEBUGVER);
+		val |= FIELD_PREP(FEATURE(ID_AA64DFR0_DEBUGVER), 6);
 		/* Limit guests to PMUv3 for ARMv8.1 */
 		val = cpuid_feature_cap_perfmon_field(val,
 						      ID_AA64DFR0_PMUVER_SHIFT,
-- 
2.29.2

WARNING: multiple messages have this Message-ID (diff)

From: Marc Zyngier <maz@kernel.org>
To: linux-arm-kernel@lists.infradead.org,
	kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org
Cc: kernel-team@android.com
Subject: [PATCH v2 5/7] KVM: arm64: Limit the debug architecture to ARMv8.0
Date: Mon, 25 Jan 2021 12:26:36 +0000	[thread overview]
Message-ID: <20210125122638.2947058-6-maz@kernel.org> (raw)
In-Reply-To: <20210125122638.2947058-1-maz@kernel.org>

Let's not pretend we support anything but ARMv8.0 as far as the
debug architecture is concerned.

Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
---
 arch/arm64/kvm/sys_regs.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c
index dda16d60197b..8f79ec1fffa7 100644
--- a/arch/arm64/kvm/sys_regs.c
+++ b/arch/arm64/kvm/sys_regs.c
@@ -1048,6 +1048,9 @@ static u64 read_id_reg(const struct kvm_vcpu *vcpu,
 				 FEATURE(ID_AA64ISAR1_GPI));
 		break;
 	case SYS_ID_AA64DFR0_EL1:
+		/* Limit debug to ARMv8.0 */
+		val &= ~FEATURE(ID_AA64DFR0_DEBUGVER);
+		val |= FIELD_PREP(FEATURE(ID_AA64DFR0_DEBUGVER), 6);
 		/* Limit guests to PMUv3 for ARMv8.1 */
 		val = cpuid_feature_cap_perfmon_field(val,
 						      ID_AA64DFR0_PMUVER_SHIFT,
-- 
2.29.2

_______________________________________________
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: Marc Zyngier <maz@kernel.org>
To: linux-arm-kernel@lists.infradead.org,
	kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org
Cc: Suzuki K Poulose <suzuki.poulose@arm.com>,
	kernel-team@android.com, Eric Auger <eric.auger@redhat.com>,
	James Morse <james.morse@arm.com>,
	Alexandru Elisei <alexandru.elisei@arm.com>,
	Julien Thierry <julien.thierry.kdev@gmail.com>
Subject: [PATCH v2 5/7] KVM: arm64: Limit the debug architecture to ARMv8.0
Date: Mon, 25 Jan 2021 12:26:36 +0000	[thread overview]
Message-ID: <20210125122638.2947058-6-maz@kernel.org> (raw)
In-Reply-To: <20210125122638.2947058-1-maz@kernel.org>

Let's not pretend we support anything but ARMv8.0 as far as the
debug architecture is concerned.

Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
---
 arch/arm64/kvm/sys_regs.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c
index dda16d60197b..8f79ec1fffa7 100644
--- a/arch/arm64/kvm/sys_regs.c
+++ b/arch/arm64/kvm/sys_regs.c
@@ -1048,6 +1048,9 @@ static u64 read_id_reg(const struct kvm_vcpu *vcpu,
 				 FEATURE(ID_AA64ISAR1_GPI));
 		break;
 	case SYS_ID_AA64DFR0_EL1:
+		/* Limit debug to ARMv8.0 */
+		val &= ~FEATURE(ID_AA64DFR0_DEBUGVER);
+		val |= FIELD_PREP(FEATURE(ID_AA64DFR0_DEBUGVER), 6);
 		/* Limit guests to PMUv3 for ARMv8.1 */
 		val = cpuid_feature_cap_perfmon_field(val,
 						      ID_AA64DFR0_PMUVER_SHIFT,
-- 
2.29.2


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

next prev parent reply	other threads:[~2021-01-25 12:57 UTC|newest]

Thread overview: 87+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-25 12:26 [PATCH v2 0/7] KVM: arm64: More PMU/debug ID register fixes Marc Zyngier
2021-01-25 12:26 ` Marc Zyngier
2021-01-25 12:26 ` Marc Zyngier
2021-01-25 12:26 ` [PATCH v2 1/7] KVM: arm64: Fix missing RES1 in emulation of DBGBIDR Marc Zyngier
2021-01-25 12:26   ` Marc Zyngier
2021-01-25 12:26   ` Marc Zyngier
2021-01-26 17:32   ` Alexandru Elisei
2021-01-26 17:32     ` Alexandru Elisei
2021-01-26 17:32     ` Alexandru Elisei
2021-01-25 12:26 ` [PATCH v2 2/7] KVM: arm64: Fix AArch32 PMUv3 capping Marc Zyngier
2021-01-25 12:26   ` Marc Zyngier
2021-01-25 12:26   ` Marc Zyngier
2021-01-26 17:35   ` Alexandru Elisei
2021-01-26 17:35     ` Alexandru Elisei
2021-01-26 17:35     ` Alexandru Elisei
2021-01-25 12:26 ` [PATCH v2 3/7] KVM: arm64: Add handling of AArch32 PCMEID{2,3} PMUv3 registers Marc Zyngier
2021-01-25 12:26   ` [PATCH v2 3/7] KVM: arm64: Add handling of AArch32 PCMEID{2, 3} " Marc Zyngier
2021-01-25 12:26   ` Marc Zyngier
2021-01-25 12:26 ` [PATCH v2 4/7] KVM: arm64: Refactor filtering of ID registers Marc Zyngier
2021-01-25 12:26   ` Marc Zyngier
2021-01-25 12:26   ` Marc Zyngier
2021-01-27 12:12   ` Alexandru Elisei
2021-01-27 12:12     ` Alexandru Elisei
2021-01-27 12:12     ` Alexandru Elisei
2021-01-25 12:26 ` Marc Zyngier [this message]
2021-01-25 12:26   ` [PATCH v2 5/7] KVM: arm64: Limit the debug architecture to ARMv8.0 Marc Zyngier
2021-01-25 12:26   ` Marc Zyngier
2021-01-27 12:18   ` Alexandru Elisei
2021-01-27 12:18     ` Alexandru Elisei
2021-01-27 12:18     ` Alexandru Elisei
2021-01-25 12:26 ` [PATCH v2 6/7] KVM: arm64: Upgrade PMU support to ARMv8.4 Marc Zyngier
2021-01-25 12:26   ` Marc Zyngier
2021-01-25 12:26   ` Marc Zyngier
2021-01-27 14:09   ` Alexandru Elisei
2021-01-27 14:09     ` Alexandru Elisei
2021-01-27 14:09     ` Alexandru Elisei
2021-01-27 14:35     ` Marc Zyngier
2021-01-27 14:35       ` Marc Zyngier
2021-01-27 14:35       ` Marc Zyngier
2021-01-27 17:00       ` Alexandru Elisei
2021-01-27 17:00         ` Alexandru Elisei
2021-01-27 17:00         ` Alexandru Elisei
2021-01-27 17:23         ` Marc Zyngier
2021-01-27 17:23           ` Marc Zyngier
2021-01-27 17:23           ` Marc Zyngier
2021-01-27 17:41   ` Alexandru Elisei
2021-01-27 17:41     ` Alexandru Elisei
2021-01-27 17:41     ` Alexandru Elisei
2021-02-03 10:32     ` Marc Zyngier
2021-02-03 10:32       ` Marc Zyngier
2021-02-03 10:32       ` Marc Zyngier
2021-02-03 17:29       ` Alexandru Elisei
2021-02-03 17:29         ` Alexandru Elisei
2021-02-03 17:29         ` Alexandru Elisei
2021-01-27 17:53   ` Auger Eric
2021-01-27 17:53     ` Auger Eric
2021-01-27 17:53     ` Auger Eric
2021-02-03 10:36     ` Marc Zyngier
2021-02-03 10:36       ` Marc Zyngier
2021-02-03 10:36       ` Marc Zyngier
2021-02-03 11:07       ` Auger Eric
2021-02-03 11:07         ` Auger Eric
2021-02-03 11:07         ` Auger Eric
2021-02-03 11:20         ` Marc Zyngier
2021-02-03 11:20           ` Marc Zyngier
2021-02-03 11:20           ` Marc Zyngier
2021-02-03 12:39           ` Auger Eric
2021-02-03 12:39             ` Auger Eric
2021-02-03 12:39             ` Auger Eric
2021-02-03 13:28             ` Marc Zyngier
2021-02-03 13:28               ` Marc Zyngier
2021-02-03 13:28               ` Marc Zyngier
2021-02-04 12:32               ` Alexandru Elisei
2021-02-04 12:32                 ` Alexandru Elisei
2021-02-04 12:32                 ` Alexandru Elisei
2021-02-04 14:21                 ` Marc Zyngier
2021-02-04 14:21                   ` Marc Zyngier
2021-02-04 14:21                   ` Marc Zyngier
2021-01-25 12:26 ` [PATCH v2 7/7] KVM: arm64: Use symbolic names for the PMU versions Marc Zyngier
2021-01-25 12:26   ` Marc Zyngier
2021-01-25 12:26   ` Marc Zyngier
2021-01-27 14:28   ` Alexandru Elisei
2021-01-27 14:28     ` Alexandru Elisei
2021-01-27 14:28     ` Alexandru Elisei
2021-01-27 17:56   ` Auger Eric
2021-01-27 17:56     ` Auger Eric
2021-01-27 17:56     ` Auger Eric

find likely ancestor, descendant, or conflicting patches for this message:
dfblob:dda16d60197 dfblob:dda16d60197 dfblob:dda16d60197
dfblob:8f79ec1fffa dfblob:8f79ec1fffa dfblob:8f79ec1fffa
	(help)

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