[PATCH v2 07/11] KVM: arm64: Map SVE context at EL2 when available

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From: Marc Zyngier <maz@kernel.org>
To: kvmarm@lists.cs.columbia.edu,
	linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org
Cc: kernel-team@android.com,
	Catalin Marinas <catalin.marinas@arm.com>,
	broonie@kernel.org, Will Deacon <will@kernel.org>,
	dave.martin@arm.com, daniel.kiss@arm.com
Subject: [PATCH v2 07/11] KVM: arm64: Map SVE context at EL2 when available
Date: Thu, 18 Mar 2021 12:25:28 +0000	[thread overview]
Message-ID: <20210318122532.505263-8-maz@kernel.org> (raw)
In-Reply-To: <20210318122532.505263-1-maz@kernel.org>

When running on nVHE, and that the vcpu supports SVE, map the
SVE state at EL2 so that KVM can access it.

Signed-off-by: Marc Zyngier <maz@kernel.org>
---
 arch/arm64/kvm/fpsimd.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/arch/arm64/kvm/fpsimd.c b/arch/arm64/kvm/fpsimd.c
index b7e36a506d3d..3c37a419fa82 100644
--- a/arch/arm64/kvm/fpsimd.c
+++ b/arch/arm64/kvm/fpsimd.c
@@ -43,6 +43,17 @@ int kvm_arch_vcpu_run_map_fp(struct kvm_vcpu *vcpu)
 	if (ret)
 		goto error;
 
+	if (vcpu->arch.sve_state) {
+		void *sve_end;
+
+		sve_end = vcpu->arch.sve_state + vcpu_sve_state_size(vcpu);
+
+		ret = create_hyp_mappings(vcpu->arch.sve_state, sve_end,
+					  PAGE_HYP);
+		if (ret)
+			goto error;
+	}
+
 	vcpu->arch.host_thread_info = kern_hyp_va(ti);
 	vcpu->arch.host_fpsimd_state = kern_hyp_va(fpsimd);
 error:
-- 
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: kvmarm@lists.cs.columbia.edu,
	linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org
Cc: dave.martin@arm.com, daniel.kiss@arm.com,
	Will Deacon <will@kernel.org>,
	Catalin Marinas <catalin.marinas@arm.com>,
	James Morse <james.morse@arm.com>,
	Julien Thierry <julien.thierry.kdev@gmail.com>,
	Suzuki K Poulose <suzuki.poulose@arm.com>,
	broonie@kernel.org, ascull@google.com, qperret@google.com,
	kernel-team@android.com
Subject: [PATCH v2 07/11] KVM: arm64: Map SVE context at EL2 when available
Date: Thu, 18 Mar 2021 12:25:28 +0000	[thread overview]
Message-ID: <20210318122532.505263-8-maz@kernel.org> (raw)
In-Reply-To: <20210318122532.505263-1-maz@kernel.org>

When running on nVHE, and that the vcpu supports SVE, map the
SVE state at EL2 so that KVM can access it.

Signed-off-by: Marc Zyngier <maz@kernel.org>
---
 arch/arm64/kvm/fpsimd.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/arch/arm64/kvm/fpsimd.c b/arch/arm64/kvm/fpsimd.c
index b7e36a506d3d..3c37a419fa82 100644
--- a/arch/arm64/kvm/fpsimd.c
+++ b/arch/arm64/kvm/fpsimd.c
@@ -43,6 +43,17 @@ int kvm_arch_vcpu_run_map_fp(struct kvm_vcpu *vcpu)
 	if (ret)
 		goto error;
 
+	if (vcpu->arch.sve_state) {
+		void *sve_end;
+
+		sve_end = vcpu->arch.sve_state + vcpu_sve_state_size(vcpu);
+
+		ret = create_hyp_mappings(vcpu->arch.sve_state, sve_end,
+					  PAGE_HYP);
+		if (ret)
+			goto error;
+	}
+
 	vcpu->arch.host_thread_info = kern_hyp_va(ti);
 	vcpu->arch.host_fpsimd_state = kern_hyp_va(fpsimd);
 error:
-- 
2.29.2


_______________________________________________
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: Marc Zyngier <maz@kernel.org>
To: kvmarm@lists.cs.columbia.edu,
	linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org
Cc: dave.martin@arm.com, daniel.kiss@arm.com,
	Will Deacon <will@kernel.org>,
	Catalin Marinas <catalin.marinas@arm.com>,
	James Morse <james.morse@arm.com>,
	Julien Thierry <julien.thierry.kdev@gmail.com>,
	Suzuki K Poulose <suzuki.poulose@arm.com>,
	broonie@kernel.org, ascull@google.com, qperret@google.com,
	kernel-team@android.com
Subject: [PATCH v2 07/11] KVM: arm64: Map SVE context at EL2 when available
Date: Thu, 18 Mar 2021 12:25:28 +0000	[thread overview]
Message-ID: <20210318122532.505263-8-maz@kernel.org> (raw)
In-Reply-To: <20210318122532.505263-1-maz@kernel.org>

When running on nVHE, and that the vcpu supports SVE, map the
SVE state at EL2 so that KVM can access it.

Signed-off-by: Marc Zyngier <maz@kernel.org>
---
 arch/arm64/kvm/fpsimd.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/arch/arm64/kvm/fpsimd.c b/arch/arm64/kvm/fpsimd.c
index b7e36a506d3d..3c37a419fa82 100644
--- a/arch/arm64/kvm/fpsimd.c
+++ b/arch/arm64/kvm/fpsimd.c
@@ -43,6 +43,17 @@ int kvm_arch_vcpu_run_map_fp(struct kvm_vcpu *vcpu)
 	if (ret)
 		goto error;
 
+	if (vcpu->arch.sve_state) {
+		void *sve_end;
+
+		sve_end = vcpu->arch.sve_state + vcpu_sve_state_size(vcpu);
+
+		ret = create_hyp_mappings(vcpu->arch.sve_state, sve_end,
+					  PAGE_HYP);
+		if (ret)
+			goto error;
+	}
+
 	vcpu->arch.host_thread_info = kern_hyp_va(ti);
 	vcpu->arch.host_fpsimd_state = kern_hyp_va(fpsimd);
 error:
-- 
2.29.2

next prev parent reply	other threads:[~2021-03-18 12:26 UTC|newest]

Thread overview: 72+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-18 12:25 [PATCH v2 00/11] KVM: arm64: Enable SVE support on nVHE systems Marc Zyngier
2021-03-18 12:25 ` Marc Zyngier
2021-03-18 12:25 ` Marc Zyngier
2021-03-18 12:25 ` [PATCH v2 01/11] KVM: arm64: Provide KVM's own save/restore SVE primitives Marc Zyngier
2021-03-18 12:25   ` Marc Zyngier
2021-03-18 12:25   ` Marc Zyngier
2021-03-18 12:25 ` [PATCH v2 02/11] KVM: arm64: Use {read, write}_sysreg_el1 to access ZCR_EL1 Marc Zyngier
2021-03-18 12:25   ` [PATCH v2 02/11] KVM: arm64: Use {read,write}_sysreg_el1 " Marc Zyngier
2021-03-18 12:25   ` [PATCH v2 02/11] KVM: arm64: Use {read, write}_sysreg_el1 " Marc Zyngier
2021-03-18 12:25 ` [PATCH v2 03/11] KVM: arm64: Let vcpu_sve_pffr() handle HYP VAs Marc Zyngier
2021-03-18 12:25   ` Marc Zyngier
2021-03-18 12:25   ` Marc Zyngier
2021-03-18 12:25 ` [PATCH v2 04/11] KVM: arm64: Introduce vcpu_sve_vq() helper Marc Zyngier
2021-03-18 12:25   ` Marc Zyngier
2021-03-18 12:25   ` Marc Zyngier
2021-03-18 12:25 ` [PATCH v2 05/11] arm64: sve: Provide a conditional update accessor for ZCR_ELx Marc Zyngier
2021-03-18 12:25   ` Marc Zyngier
2021-03-18 12:25   ` Marc Zyngier
2021-03-18 13:32   ` Will Deacon
2021-03-18 13:32     ` Will Deacon
2021-03-18 13:32     ` Will Deacon
2021-03-19 16:42   ` Mark Brown
2021-03-19 16:42     ` Mark Brown
2021-03-19 16:42     ` Mark Brown
2021-03-19 16:51     ` Marc Zyngier
2021-03-19 16:51       ` Marc Zyngier
2021-03-19 16:51       ` Marc Zyngier
2021-03-19 16:58       ` Mark Brown
2021-03-19 16:58         ` Mark Brown
2021-03-19 16:58         ` Mark Brown
2021-03-18 12:25 ` [PATCH v2 06/11] KVM: arm64: Rework SVE host-save/guest-restore Marc Zyngier
2021-03-18 12:25   ` Marc Zyngier
2021-03-18 12:25   ` Marc Zyngier
2021-03-18 13:34   ` Will Deacon
2021-03-18 13:34     ` Will Deacon
2021-03-18 13:34     ` Will Deacon
2021-03-18 12:25 ` Marc Zyngier [this message]
2021-03-18 12:25   ` [PATCH v2 07/11] KVM: arm64: Map SVE context at EL2 when available Marc Zyngier
2021-03-18 12:25   ` Marc Zyngier
2021-03-18 13:35   ` Will Deacon
2021-03-18 13:35     ` Will Deacon
2021-03-18 13:35     ` Will Deacon
2021-03-18 12:25 ` [PATCH v2 08/11] KVM: arm64: Save guest's ZCR_EL1 before saving the FPSIMD state Marc Zyngier
2021-03-18 12:25   ` Marc Zyngier
2021-03-18 12:25   ` Marc Zyngier
2021-03-18 12:25 ` [PATCH v2 09/11] KVM: arm64: Trap host SVE accesses when the FPSIMD state is dirty Marc Zyngier
2021-03-18 12:25   ` Marc Zyngier
2021-03-18 12:25   ` Marc Zyngier
2021-03-18 14:11   ` Will Deacon
2021-03-18 14:11     ` Will Deacon
2021-03-18 14:11     ` Will Deacon
2021-03-18 14:29     ` Marc Zyngier
2021-03-18 14:29       ` Marc Zyngier
2021-03-18 14:29       ` Marc Zyngier
2021-03-18 18:40   ` Marc Zyngier
2021-03-18 18:40     ` Marc Zyngier
2021-03-18 18:40     ` Marc Zyngier
2021-03-18 12:25 ` [PATCH v2 10/11] KVM: arm64: Save/restore SVE state for nVHE Marc Zyngier
2021-03-18 12:25   ` Marc Zyngier
2021-03-18 12:25   ` Marc Zyngier
2021-03-18 14:13   ` Will Deacon
2021-03-18 14:13     ` Will Deacon
2021-03-18 14:13     ` Will Deacon
2021-03-18 14:32     ` Marc Zyngier
2021-03-18 14:32       ` Marc Zyngier
2021-03-18 14:32       ` Marc Zyngier
2021-03-18 12:25 ` [PATCH v2 11/11] KVM: arm64: Enable SVE support " Marc Zyngier
2021-03-18 12:25   ` Marc Zyngier
2021-03-18 12:25   ` Marc Zyngier
2021-03-19 17:53 ` [PATCH v2 00/11] KVM: arm64: Enable SVE support on nVHE systems Mark Brown
2021-03-19 17:53   ` Mark Brown
2021-03-19 17:53   ` Mark Brown

find likely ancestor, descendant, or conflicting patches for this message:
( dfblob:b7e36a506d3 dfblob:3c37a419fa8 dfblob:b7e36a506d3
dfblob:3c37a419fa8 dfblob:b7e36a506d3 dfblob:3c37a419fa8 )
 OR (
bs:"[PATCH v2 07/11] KVM: arm64: Map SVE context at EL2 when available" )
	(help)

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