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Merge branch 'x86/hyperv' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

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Topic branch for stable KVM clockource under Hyper-V.

Thanks to Christoffer Dall for resolving the ARM conflict.
This commit is contained in:
Radim Krčmář
2018-02-01 15:04:17 +01:00
parent 87cedc6be5 5fa4ec9cb2
commit 7bf14c28ee
2721 changed files with 90777 additions and 47548 deletions
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31
virt/kvm/arm/arch_timer.c
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@@ -93,10 +93,14 @@ static irqreturn_t kvm_arch_timer_handler(int irq, void *dev_id)
struct kvm_vcpu *vcpu = *(struct kvm_vcpu **)dev_id;
struct arch_timer_context *vtimer;
if (!vcpu) {
pr_warn_once("Spurious arch timer IRQ on non-VCPU thread\n");
return IRQ_NONE;
}
/*
* We may see a timer interrupt after vcpu_put() has been called which
* sets the CPU's vcpu pointer to NULL, because even though the timer
* has been disabled in vtimer_save_state(), the hardware interrupt
* signal may not have been retired from the interrupt controller yet.
*/
if (!vcpu)
return IRQ_HANDLED;
vtimer = vcpu_vtimer(vcpu);
if (kvm_timer_should_fire(vtimer))
@@ -368,6 +372,7 @@ static void vtimer_save_state(struct kvm_vcpu *vcpu)
/* Disable the virtual timer */
write_sysreg_el0(0, cntv_ctl);
isb();
vtimer->loaded = false;
out:
@@ -705,7 +710,7 @@ static int kvm_timer_dying_cpu(unsigned int cpu)
return 0;
}
int kvm_timer_hyp_init(void)
int kvm_timer_hyp_init(bool has_gic)
{
struct arch_timer_kvm_info *info;
int err;
@@ -741,10 +746,13 @@ int kvm_timer_hyp_init(void)
return err;
}
err = irq_set_vcpu_affinity(host_vtimer_irq, kvm_get_running_vcpus());
if (err) {
kvm_err("kvm_arch_timer: error setting vcpu affinity\n");
goto out_free_irq;
if (has_gic) {
err = irq_set_vcpu_affinity(host_vtimer_irq,
kvm_get_running_vcpus());
if (err) {
kvm_err("kvm_arch_timer: error setting vcpu affinity\n");
goto out_free_irq;
}
}
kvm_info("virtual timer IRQ%d\n", host_vtimer_irq);
@@ -834,10 +842,7 @@ int kvm_timer_enable(struct kvm_vcpu *vcpu)
no_vgic:
preempt_disable();
timer->enabled = 1;
if (!irqchip_in_kernel(vcpu->kvm))
kvm_timer_vcpu_load_user(vcpu);
else
kvm_timer_vcpu_load_vgic(vcpu);
kvm_timer_vcpu_load(vcpu);
preempt_enable();
return 0;