From: Christoffer Dall <christoffer.dall@xxxxxxxxxx>
Moving the call to vcpu_load() in kvm_arch_vcpu_ioctl_run() to after
we've called kvm_vcpu_first_run_init() simplifies some of the vgic and
there is also no need to do vcpu_load() for things such as handling the
immediate_exit flag.
Signed-off-by: Christoffer Dall <christoffer.dall@xxxxxxxxxx>
---
virt/kvm/arm/arch_timer.c | 4 ----
virt/kvm/arm/arm.c | 12 +++++-------
virt/kvm/arm/vgic/vgic-init.c | 11 -----------
3 files changed, 5 insertions(+), 22 deletions(-)
diff --git a/virt/kvm/arm/arch_timer.c b/virt/kvm/arm/arch_timer.c
index 4151250ce8da..801fecfee299 100644
--- a/virt/kvm/arm/arch_timer.c
+++ b/virt/kvm/arm/arch_timer.c
@@ -839,11 +839,7 @@ int kvm_timer_enable(struct kvm_vcpu *vcpu)
return ret;
no_vgic:
- preempt_disable();
timer->enabled = 1;
- kvm_timer_vcpu_load_vgic(vcpu);
- preempt_enable();
-
return 0;
}
diff --git a/virt/kvm/arm/arm.c b/virt/kvm/arm/arm.c
index a760ef1803be..991f1aa70fb9 100644
--- a/virt/kvm/arm/arm.c
+++ b/virt/kvm/arm/arm.c
@@ -622,8 +622,6 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run)
if (unlikely(!kvm_vcpu_initialized(vcpu)))
return -ENOEXEC;
- vcpu_load(vcpu);
-
ret = kvm_vcpu_first_run_init(vcpu);
if (ret)
goto out;
@@ -631,13 +629,13 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run)
if (run->exit_reason == KVM_EXIT_MMIO) {
ret = kvm_handle_mmio_return(vcpu, vcpu->run);
if (ret)
- goto out;
+ return ret;
}
- if (run->immediate_exit) {
- ret = -EINTR;
- goto out;
- }
+ if (run->immediate_exit)
+ return -EINTR;
+
+ vcpu_load(vcpu);
if (vcpu->sigset_active)
sigprocmask(SIG_SETMASK, &vcpu->sigset, &sigsaved);
diff --git a/virt/kvm/arm/vgic/vgic-init.c b/virt/kvm/arm/vgic/vgic-init.c
index 62310122ee78..a0688ef52ad7 100644
--- a/virt/kvm/arm/vgic/vgic-init.c
+++ b/virt/kvm/arm/vgic/vgic-init.c
@@ -300,17 +300,6 @@ int vgic_init(struct kvm *kvm)
dist->initialized = true;
- /*
- * If we're initializing GICv2 on-demand when first running the VCPU
- * then we need to load the VGIC state onto the CPU. We can detect
- * this easily by checking if we are in between vcpu_load and vcpu_put
- * when we just initialized the VGIC.
- */
- preempt_disable();
- vcpu = kvm_arm_get_running_vcpu();
- if (vcpu)
- kvm_vgic_load(vcpu);
- preempt_enable();
out:
return ret;
}
--
2.14.2
