From: Oliver Upton <oliver.upton@linux.dev>
To: kvmarm@lists.linux.dev
Cc: kvm@vger.kernel.org, Marc Zyngier <maz@kernel.org>,
James Morse <james.morse@arm.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Zenghui Yu <yuzenghui@huawei.com>,
Oliver Upton <oliver.upton@linux.dev>
Subject: [PATCH 0/8] KVM: arm64: Cleanup + fix to vCPU reset, feature flags
Date: Wed, 20 Sep 2023 19:50:28 +0000 [thread overview]
Message-ID: <20230920195036.1169791-1-oliver.upton@linux.dev> (raw)
The way we do vCPU feature flag checks is a bit of a scattered mess
between the KVM_ARM_VCPU_INIT ioctl handler and kvm_reset_vcpu(). Let's
move all the feature flag checks up into the ioctl() handler to
eliminate failure paths from kvm_reset_vcpu(), as other usage of this
function no not handle returned errors.
Nobody screamed about the VM-wide feature flag change, so its also a
good time to rip out the vestiges of the vCPU-scoped bitmap.
I also spotted a bug with the NV feature flag where we allow it
regardless of system support.
Oliver Upton (8):
KVM: arm64: Add generic check for system-supported vCPU features
KVM: arm64: Hoist PMUv3 check into KVM_ARM_VCPU_INIT ioctl handler
KVM: arm64: Hoist SVE check into KVM_ARM_VCPU_INIT ioctl handler
KVM: arm64: Hoist PAuth checks into KVM_ARM_VCPU_INIT ioctl
KVM: arm64: Prevent NV feature flag on systems w/o nested virt
KVM: arm64: Hoist NV+SVE check into KVM_ARM_VCPU_INIT ioctl handler
KVM: arm64: Remove unused return value from kvm_reset_vcpu()
KVM: arm64: Get rid of vCPU-scoped feature bitmap
arch/arm64/include/asm/kvm_emulate.h | 13 +++---
arch/arm64/include/asm/kvm_host.h | 5 +--
arch/arm64/include/asm/kvm_nested.h | 3 +-
arch/arm64/kvm/arch_timer.c | 4 +-
arch/arm64/kvm/arm.c | 62 +++++++++++++++++++++-------
arch/arm64/kvm/hypercalls.c | 2 +-
arch/arm64/kvm/reset.c | 56 +++++--------------------
include/kvm/arm_arch_timer.h | 2 +-
include/kvm/arm_pmu.h | 2 +-
include/kvm/arm_psci.h | 2 +-
10 files changed, 72 insertions(+), 79 deletions(-)
base-commit: ce9ecca0238b140b88f43859b211c9fdfd8e5b70
--
2.42.0.515.g380fc7ccd1-goog
next reply other threads:[~2023-09-20 19:50 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-20 19:50 Oliver Upton [this message]
2023-09-20 19:50 ` [PATCH 1/8] KVM: arm64: Add generic check for system-supported vCPU features Oliver Upton
2023-09-21 8:30 ` Marc Zyngier
2023-09-21 12:47 ` Philippe Mathieu-Daudé
2023-09-20 19:50 ` [PATCH 2/8] KVM: arm64: Hoist PMUv3 check into KVM_ARM_VCPU_INIT ioctl handler Oliver Upton
2023-09-21 12:48 ` Philippe Mathieu-Daudé
2023-09-20 19:50 ` [PATCH 3/8] KVM: arm64: Hoist SVE " Oliver Upton
2023-09-20 19:50 ` [PATCH 4/8] KVM: arm64: Hoist PAuth checks into KVM_ARM_VCPU_INIT ioctl Oliver Upton
2023-09-20 19:50 ` [PATCH 5/8] KVM: arm64: Prevent NV feature flag on systems w/o nested virt Oliver Upton
2023-09-21 8:25 ` Marc Zyngier
2023-09-20 19:50 ` [PATCH 6/8] KVM: arm64: Hoist NV+SVE check into KVM_ARM_VCPU_INIT ioctl handler Oliver Upton
2023-09-20 19:50 ` [PATCH 7/8] KVM: arm64: Remove unused return value from kvm_reset_vcpu() Oliver Upton
2023-09-20 19:50 ` [PATCH 8/8] KVM: arm64: Get rid of vCPU-scoped feature bitmap Oliver Upton
2023-09-21 8:49 ` [PATCH 0/8] KVM: arm64: Cleanup + fix to vCPU reset, feature flags Marc Zyngier
2023-09-21 18:18 ` Oliver Upton
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