From: Andrew Jones <drjones@redhat.com> To: kvm@vger.kernel.org, kvmarm@lists.cs.columbia.edu Cc: pbonzini@redhat.com, maz@kernel.org, steven.price@arm.com Subject: [PATCH 1/5] KVM: arm64: pvtime: steal-time is only supported when configured Date: Sat, 11 Jul 2020 12:04:30 +0200 [thread overview] Message-ID: <20200711100434.46660-2-drjones@redhat.com> (raw) In-Reply-To: <20200711100434.46660-1-drjones@redhat.com> Don't confuse the guest by saying steal-time is supported when it hasn't been configured by userspace and won't work. Signed-off-by: Andrew Jones <drjones@redhat.com> --- arch/arm64/kvm/pvtime.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/arch/arm64/kvm/pvtime.c b/arch/arm64/kvm/pvtime.c index f7b52ce1557e..2b22214909be 100644 --- a/arch/arm64/kvm/pvtime.c +++ b/arch/arm64/kvm/pvtime.c @@ -42,9 +42,12 @@ long kvm_hypercall_pv_features(struct kvm_vcpu *vcpu) switch (feature) { case ARM_SMCCC_HV_PV_TIME_FEATURES: - case ARM_SMCCC_HV_PV_TIME_ST: val = SMCCC_RET_SUCCESS; break; + case ARM_SMCCC_HV_PV_TIME_ST: + if (vcpu->arch.steal.base != GPA_INVALID) + val = SMCCC_RET_SUCCESS; + break; } return val; -- 2.25.4
WARNING: multiple messages have this Message-ID (diff)
From: Andrew Jones <drjones@redhat.com> To: kvm@vger.kernel.org, kvmarm@lists.cs.columbia.edu Cc: pbonzini@redhat.com, steven.price@arm.com, maz@kernel.org Subject: [PATCH 1/5] KVM: arm64: pvtime: steal-time is only supported when configured Date: Sat, 11 Jul 2020 12:04:30 +0200 [thread overview] Message-ID: <20200711100434.46660-2-drjones@redhat.com> (raw) In-Reply-To: <20200711100434.46660-1-drjones@redhat.com> Don't confuse the guest by saying steal-time is supported when it hasn't been configured by userspace and won't work. Signed-off-by: Andrew Jones <drjones@redhat.com> --- arch/arm64/kvm/pvtime.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/arch/arm64/kvm/pvtime.c b/arch/arm64/kvm/pvtime.c index f7b52ce1557e..2b22214909be 100644 --- a/arch/arm64/kvm/pvtime.c +++ b/arch/arm64/kvm/pvtime.c @@ -42,9 +42,12 @@ long kvm_hypercall_pv_features(struct kvm_vcpu *vcpu) switch (feature) { case ARM_SMCCC_HV_PV_TIME_FEATURES: - case ARM_SMCCC_HV_PV_TIME_ST: val = SMCCC_RET_SUCCESS; break; + case ARM_SMCCC_HV_PV_TIME_ST: + if (vcpu->arch.steal.base != GPA_INVALID) + val = SMCCC_RET_SUCCESS; + break; } return val; -- 2.25.4 _______________________________________________ kvmarm mailing list kvmarm@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
next prev parent reply other threads:[~2020-07-11 10:04 UTC|newest] Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-07-11 10:04 [PATCH 0/5] KVM: arm64: pvtime: Fixes and a new cap Andrew Jones 2020-07-11 10:04 ` Andrew Jones 2020-07-11 10:04 ` Andrew Jones [this message] 2020-07-11 10:04 ` [PATCH 1/5] KVM: arm64: pvtime: steal-time is only supported when configured Andrew Jones 2020-07-27 17:25 ` Marc Zyngier 2020-07-27 17:25 ` Marc Zyngier 2020-07-28 12:55 ` Andrew Jones 2020-07-28 12:55 ` Andrew Jones 2020-07-28 13:13 ` Marc Zyngier 2020-07-28 13:13 ` Marc Zyngier 2020-07-28 13:29 ` Andrew Jones 2020-07-28 13:29 ` Andrew Jones 2020-07-11 10:04 ` [PATCH 2/5] KVM: arm64: pvtime: Fix potential loss of stolen time Andrew Jones 2020-07-11 10:04 ` Andrew Jones 2020-07-27 17:29 ` Marc Zyngier 2020-07-27 17:29 ` Marc Zyngier 2020-07-11 10:04 ` [PATCH 3/5] KVM: arm64: pvtime: Fix stolen time accounting across migration Andrew Jones 2020-07-11 10:04 ` Andrew Jones 2020-07-27 17:54 ` Marc Zyngier 2020-07-27 17:54 ` Marc Zyngier 2020-07-11 10:04 ` [PATCH 4/5] KVM: Documentation minor fixups Andrew Jones 2020-07-11 10:04 ` Andrew Jones 2020-07-27 17:55 ` Marc Zyngier 2020-07-27 17:55 ` Marc Zyngier 2020-07-11 10:04 ` [PATCH 5/5] arm64/x86: KVM: Introduce steal-time cap Andrew Jones 2020-07-11 10:04 ` Andrew Jones 2020-07-27 17:58 ` Marc Zyngier 2020-07-27 17:58 ` Marc Zyngier 2020-07-11 10:20 ` [PATCH 0/5] KVM: arm64: pvtime: Fixes and a new cap Andrew Jones 2020-07-11 10:20 ` Andrew Jones 2020-07-13 8:25 ` Steven Price 2020-07-13 8:25 ` Steven Price 2020-07-27 11:02 ` Andrew Jones 2020-07-27 11:02 ` Andrew Jones 2020-07-27 11:15 ` Marc Zyngier 2020-07-27 11:15 ` Marc Zyngier 2020-07-27 18:01 ` Marc Zyngier 2020-07-27 18:01 ` Marc Zyngier 2020-07-28 12:59 ` Andrew Jones 2020-07-28 12:59 ` Andrew Jones
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