linux-kernel - [RFC kvmtool 05/31] arm64: Check pvtime support against the KVM instance

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Date:   Fri, 27 Jan 2023 11:39:06 +0000
From:   Suzuki K Poulose <suzuki.poulose@....com>
To:     kvm@...r.kernel.org, kvmarm@...ts.linux.dev
Cc:     suzuki.poulose@....com,
        Alexandru Elisei <alexandru.elisei@....com>,
        Andrew Jones <andrew.jones@...ux.dev>,
        Christoffer Dall <christoffer.dall@....com>,
        Fuad Tabba <tabba@...gle.com>,
        Jean-Philippe Brucker <jean-philippe@...aro.org>,
        Joey Gouly <Joey.Gouly@....com>, Marc Zyngier <maz@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Oliver Upton <oliver.upton@...ux.dev>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Quentin Perret <qperret@...gle.com>,
        Steven Price <steven.price@....com>,
        Thomas Huth <thuth@...hat.com>, Will Deacon <will@...nel.org>,
        Zenghui Yu <yuzenghui@...wei.com>, linux-coco@...ts.linux.dev,
        kvmarm@...ts.cs.columbia.edu, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: [RFC kvmtool 05/31] arm64: Check pvtime support against the KVM instance

KVM_CAP_STEAL_TIME can be checked against a VM instance.
To allow controlling the feature depending on the VM type,
use the cap against the VM.

Signed-off-by: Suzuki K Poulose <suzuki.poulose@....com>
---
 arm/aarch64/pvtime.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arm/aarch64/pvtime.c b/arm/aarch64/pvtime.c
index 2933ac7c..839aa8a7 100644
--- a/arm/aarch64/pvtime.c
+++ b/arm/aarch64/pvtime.c
@@ -58,8 +58,8 @@ int kvm_cpu__setup_pvtime(struct kvm_cpu *vcpu)
 	if (kvm_cfg->no_pvtime)
 		return 0;
 
-	has_stolen_time = kvm__supports_extension(vcpu->kvm,
-						  KVM_CAP_STEAL_TIME);
+	has_stolen_time = kvm__supports_vm_extension(vcpu->kvm,
+						     KVM_CAP_STEAL_TIME);
 	if (!has_stolen_time) {
 		kvm_cfg->no_pvtime = true;
 		return 0;
-- 
2.34.1