With the transition to kvm_arch_vcpu_run_pid_change() to handle
the "run once" activities, it becomes obvious that has_run_once
is now an exact shadow of vcpu->pid.
Replace vcpu->arch.has_run_once with a new vcpu_has_run_once()
helper that directly checks for vcpu->pid, and get rid of the
now unused field.
Signed-off-by: Marc Zyngier <maz@xxxxxxxxxx>
---
arch/arm64/include/asm/kvm_host.h | 5 ++---
arch/arm64/kvm/arm.c | 8 +++-----
arch/arm64/kvm/vgic/vgic-init.c | 2 +-
3 files changed, 6 insertions(+), 9 deletions(-)
diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h
index d7107d627c54..e0de761ecbf2 100644
--- a/arch/arm64/include/asm/kvm_host.h
+++ b/arch/arm64/include/asm/kvm_host.h
@@ -366,9 +366,6 @@ struct kvm_vcpu_arch {
int target;
DECLARE_BITMAP(features, KVM_VCPU_MAX_FEATURES);
- /* Detect first run of a vcpu */
- bool has_run_once;
-
/* Virtual SError ESR to restore when HCR_EL2.VSE is set */
u64 vsesr_el2;
@@ -605,6 +602,8 @@ int __kvm_arm_vcpu_set_events(struct kvm_vcpu *vcpu,
void kvm_arm_halt_guest(struct kvm *kvm);
void kvm_arm_resume_guest(struct kvm *kvm);
+#define vcpu_has_run_once(vcpu) !!rcu_access_pointer((vcpu)->pid)
+
#ifndef __KVM_NVHE_HYPERVISOR__
#define kvm_call_hyp_nvhe(f, ...) \
({ \
diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c
index 5bcdf8073854..ebcb1adf80fb 100644
--- a/arch/arm64/kvm/arm.c
+++ b/arch/arm64/kvm/arm.c
@@ -350,7 +350,7 @@ void kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu)
void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu)
{
- if (vcpu->arch.has_run_once && unlikely(!irqchip_in_kernel(vcpu->kvm)))
+ if (vcpu_has_run_once(vcpu) && unlikely(!irqchip_in_kernel(vcpu->kvm)))
static_branch_dec(&userspace_irqchip_in_use);
kvm_mmu_free_memory_cache(&vcpu->arch.mmu_page_cache);
@@ -600,7 +600,7 @@ int kvm_arch_vcpu_run_pid_change(struct kvm_vcpu *vcpu)
if (ret)
return ret;
- if (likely(vcpu->arch.has_run_once))
+ if (likely(vcpu_has_run_once(vcpu)))
return 0;
kvm_arm_vcpu_init_debug(vcpu);
@@ -631,8 +631,6 @@ int kvm_arch_vcpu_run_pid_change(struct kvm_vcpu *vcpu)
static_branch_inc(&userspace_irqchip_in_use);
}
- vcpu->arch.has_run_once = true;
-
return ret;
}
@@ -1123,7 +1121,7 @@ static int kvm_arch_vcpu_ioctl_vcpu_init(struct kvm_vcpu *vcpu,
* need to invalidate the I-cache though, as FWB does *not*
* imply CTR_EL0.DIC.
*/
- if (vcpu->arch.has_run_once) {
+ if (vcpu_has_run_once(vcpu)) {
if (!cpus_have_final_cap(ARM64_HAS_STAGE2_FWB))
stage2_unmap_vm(vcpu->kvm);
else
diff --git a/arch/arm64/kvm/vgic/vgic-init.c b/arch/arm64/kvm/vgic/vgic-init.c
index 340c51d87677..8d89ca15f613 100644
--- a/arch/arm64/kvm/vgic/vgic-init.c
+++ b/arch/arm64/kvm/vgic/vgic-init.c
@@ -91,7 +91,7 @@ int kvm_vgic_create(struct kvm *kvm, u32 type)
return ret;
kvm_for_each_vcpu(i, vcpu, kvm) {
- if (vcpu->arch.has_run_once)
+ if (vcpu_has_run_once(vcpu))
goto out_unlock;
}
ret = 0;
--
2.30.2
