diff options
| author | Oliver Upton <oliver.upton@linux.dev> | 2023-07-10 19:31:39 +0000 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2023-07-11 09:40:52 +0100 |
| commit | ef98406036769107d5c49a519b31c940910b98d3 (patch) | |
| tree | b915e88fac941c3df16d5ee3f802e2b9a4255e4a /arch/arm64/kvm/arm.c | |
| parent | c8a67729b8a36a5f4857de645ee9808fc99d8618 (diff) | |
KVM: arm64: Replace vCPU target with a configuration flag
The value of kvm_vcpu_arch::target has been used to determine if a vCPU
has actually been initialized. Storing this as an integer is needless at
this point, as KVM doesn't do any microarch-specific emulation in the
first place. Instead, all we care about is whether or not the vCPU has
been initialized.
Delete the field in favor of a vCPU configuration flag indicating if
KVM_ARM_VCPU_INIT has completed for the vCPU.
Reviewed-by: Zenghui Yu <yuzenghui@huawei.com>
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20230710193140.1706399-4-oliver.upton@linux.dev
Diffstat (limited to 'arch/arm64/kvm/arm.c')
| -rw-r--r-- | arch/arm64/kvm/arm.c | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c index 3f844934b9f3..13f1bde0bc2d 100644 --- a/arch/arm64/kvm/arm.c +++ b/arch/arm64/kvm/arm.c @@ -360,7 +360,7 @@ int kvm_arch_vcpu_create(struct kvm_vcpu *vcpu) #endif /* Force users to call KVM_ARM_VCPU_INIT */ - vcpu->arch.target = -1; + vcpu_clear_flag(vcpu, VCPU_INITIALIZED); bitmap_zero(vcpu->arch.features, KVM_VCPU_MAX_FEATURES); vcpu->arch.mmu_page_cache.gfp_zero = __GFP_ZERO; @@ -569,7 +569,7 @@ unsigned long kvm_arch_vcpu_get_ip(struct kvm_vcpu *vcpu) static int kvm_vcpu_initialized(struct kvm_vcpu *vcpu) { - return vcpu->arch.target >= 0; + return vcpu_get_flag(vcpu, VCPU_INITIALIZED); } /* @@ -1051,7 +1051,7 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu) * invalid. The VMM can try and fix it by issuing a * KVM_ARM_VCPU_INIT if it really wants to. */ - vcpu->arch.target = -1; + vcpu_clear_flag(vcpu, VCPU_INITIALIZED); ret = ARM_EXCEPTION_IL; } @@ -1228,20 +1228,18 @@ static int __kvm_vcpu_set_target(struct kvm_vcpu *vcpu, !bitmap_equal(kvm->arch.vcpu_features, &features, KVM_VCPU_MAX_FEATURES)) goto out_unlock; - vcpu->arch.target = init->target; bitmap_copy(vcpu->arch.features, &features, KVM_VCPU_MAX_FEATURES); /* Now we know what it is, we can reset it. */ ret = kvm_reset_vcpu(vcpu); if (ret) { - vcpu->arch.target = -1; bitmap_zero(vcpu->arch.features, KVM_VCPU_MAX_FEATURES); goto out_unlock; } bitmap_copy(kvm->arch.vcpu_features, &features, KVM_VCPU_MAX_FEATURES); set_bit(KVM_ARCH_FLAG_VCPU_FEATURES_CONFIGURED, &kvm->arch.flags); - + vcpu_set_flag(vcpu, VCPU_INITIALIZED); out_unlock: mutex_unlock(&kvm->arch.config_lock); return ret; @@ -1259,7 +1257,7 @@ static int kvm_vcpu_set_target(struct kvm_vcpu *vcpu, if (ret) return ret; - if (vcpu->arch.target == -1) + if (!kvm_vcpu_initialized(vcpu)) return __kvm_vcpu_set_target(vcpu, init); if (kvm_vcpu_init_changed(vcpu, init)) |