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From: Fuad Tabba <tabba@google.com>
To: kvmarm@lists.cs.columbia.edu
Cc: maz@kernel.org, will@kernel.org, james.morse@arm.com,
	 alexandru.elisei@arm.com, suzuki.poulose@arm.com,
	mark.rutland@arm.com,  christoffer.dall@arm.com,
	pbonzini@redhat.com, drjones@redhat.com,  qperret@google.com,
	kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	 kernel-team@android.com, tabba@google.com
Subject: [PATCH v3 01/15] KVM: arm64: placeholder to check if VM is protected
Date: Mon, 19 Jul 2021 17:03:32 +0100	[thread overview]
Message-ID: <20210719160346.609914-2-tabba@google.com> (raw)
In-Reply-To: <20210719160346.609914-1-tabba@google.com>

Add a function to check whether a VM is protected (under pKVM).
Since the creation of protected VMs isn't enabled yet, this is a
placeholder that always returns false. The intention is for this
to become a check for protected VMs in the future (see Will's RFC
[*]).

No functional change intended.

Signed-off-by: Fuad Tabba <tabba@google.com>

[*] https://lore.kernel.org/kvmarm/20210603183347.1695-1-will@kernel.org/
---
 arch/arm64/include/asm/kvm_host.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h
index 41911585ae0c..347781f99b6a 100644
--- a/arch/arm64/include/asm/kvm_host.h
+++ b/arch/arm64/include/asm/kvm_host.h
@@ -771,6 +771,11 @@ void kvm_arch_free_vm(struct kvm *kvm);
 
 int kvm_arm_setup_stage2(struct kvm *kvm, unsigned long type);
 
+static inline bool kvm_vm_is_protected(struct kvm *kvm)
+{
+	return false;
+}
+
 int kvm_arm_vcpu_finalize(struct kvm_vcpu *vcpu, int feature);
 bool kvm_arm_vcpu_is_finalized(struct kvm_vcpu *vcpu);
 
-- 
2.32.0.402.g57bb445576-goog


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  reply	other threads:[~2021-07-19 16:07 UTC|newest]

Thread overview: 42+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-19 16:03 [PATCH v3 00/15] KVM: arm64: Fixed features for protected VMs Fuad Tabba
2021-07-19 16:03 ` Fuad Tabba [this message]
2021-08-12  8:58   ` [PATCH v3 01/15] KVM: arm64: placeholder to check if VM is protected Will Deacon
2021-08-12  9:22     ` Fuad Tabba
2021-07-19 16:03 ` [PATCH v3 02/15] KVM: arm64: Remove trailing whitespace in comment Fuad Tabba
2021-08-12  8:59   ` Will Deacon
2021-07-19 16:03 ` [PATCH v3 03/15] KVM: arm64: MDCR_EL2 is a 64-bit register Fuad Tabba
2021-07-19 16:03 ` [PATCH v3 04/15] KVM: arm64: Fix names of config register fields Fuad Tabba
2021-07-19 16:03 ` [PATCH v3 05/15] KVM: arm64: Refactor sys_regs.h,c for nVHE reuse Fuad Tabba
2021-07-20 13:38   ` [PATCH v3 05/15] KVM: arm64: Refactor sys_regs.h, c " Andrew Jones
2021-07-20 14:03     ` Fuad Tabba
2021-08-12  8:59   ` Will Deacon
2021-07-19 16:03 ` [PATCH v3 06/15] KVM: arm64: Restore mdcr_el2 from vcpu Fuad Tabba
2021-07-20 14:52   ` Andrew Jones
2021-07-21  7:37     ` Fuad Tabba
2021-08-12  8:46       ` Will Deacon
2021-08-12  9:28         ` Fuad Tabba
2021-08-12  9:49           ` Will Deacon
2021-07-19 16:03 ` [PATCH v3 07/15] KVM: arm64: Track value of cptr_el2 in struct kvm_vcpu_arch Fuad Tabba
2021-08-12  8:59   ` Will Deacon
2021-07-19 16:03 ` [PATCH v3 08/15] KVM: arm64: Add feature register flag definitions Fuad Tabba
2021-08-12  8:59   ` Will Deacon
2021-08-12  9:21     ` Fuad Tabba
2021-07-19 16:03 ` [PATCH v3 09/15] KVM: arm64: Add config register bit definitions Fuad Tabba
2021-08-12  8:59   ` Will Deacon
2021-07-19 16:03 ` [PATCH v3 10/15] KVM: arm64: Guest exit handlers for nVHE hyp Fuad Tabba
2021-08-03 15:32   ` Will Deacon
2021-07-19 16:03 ` [PATCH v3 11/15] KVM: arm64: Add trap handlers for protected VMs Fuad Tabba
2021-08-12  9:45   ` Will Deacon
2021-08-16 14:39     ` Fuad Tabba
2021-07-19 16:03 ` [PATCH v3 12/15] KVM: arm64: Move sanitized copies of CPU features Fuad Tabba
2021-08-12  9:46   ` Will Deacon
2021-07-19 16:03 ` [PATCH v3 13/15] KVM: arm64: Trap access to pVM restricted features Fuad Tabba
2021-08-12  9:53   ` Will Deacon
2021-07-19 16:03 ` [PATCH v3 14/15] KVM: arm64: Handle protected guests at 32 bits Fuad Tabba
2021-07-19 19:43   ` Oliver Upton
2021-07-21  8:39     ` Fuad Tabba
2021-08-12  9:57   ` Will Deacon
2021-08-12 13:08     ` Fuad Tabba
2021-07-19 16:03 ` [PATCH v3 15/15] KVM: arm64: Restrict protected VM capabilities Fuad Tabba
2021-08-12  9:59   ` Will Deacon
2021-08-16 14:40     ` Fuad Tabba

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