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| author |   Paolo Bonzini <pbonzini@redhat.com> | 2022-01-18 04:45:32 -0500 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2022-01-19 12:14:02 -0500 |
| commit | 4f5a884fc212d99654e4fb36ba98d5354f0dd18e (patch) | |
| tree | f4ac26f5acd43be75cb9d3b2f89fa92c40dbc8ee /arch/x86/kvm/vmx/posted_intr.c | |
| parent | KVM: avoid warning on s390 in mark_page_dirty (diff) | |
| parent | KVM: VMX: switch blocked_vcpu_on_cpu_lock to raw spinlock (diff) | |
| download | wireguard-linux-4f5a884fc212d99654e4fb36ba98d5354f0dd18e.tar.xz wireguard-linux-4f5a884fc212d99654e4fb36ba98d5354f0dd18e.zip | |
Merge branch 'kvm-pi-raw-spinlock' into HEAD
Bring in fix for VT-d posted interrupts before further changing the code in 5.17.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/vmx/posted_intr.c')
| -rw-r--r-- | arch/x86/kvm/vmx/posted_intr.c | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/arch/x86/kvm/vmx/posted_intr.c b/arch/x86/kvm/vmx/posted_intr.c index 88c53c521094..a82a15aa1982 100644 --- a/arch/x86/kvm/vmx/posted_intr.c +++ b/arch/x86/kvm/vmx/posted_intr.c @@ -27,7 +27,7 @@ static DEFINE_PER_CPU(struct list_head, blocked_vcpu_on_cpu); * CPU. IRQs must be disabled when taking this lock, otherwise deadlock will * occur if a wakeup IRQ arrives and attempts to acquire the lock. */ -static DEFINE_PER_CPU(spinlock_t, blocked_vcpu_on_cpu_lock); +static DEFINE_PER_CPU(raw_spinlock_t, blocked_vcpu_on_cpu_lock); static inline struct pi_desc *vcpu_to_pi_desc(struct kvm_vcpu *vcpu) { @@ -133,9 +133,9 @@ static void __pi_post_block(struct kvm_vcpu *vcpu) * Remove the vCPU from the wakeup list of the _previous_ pCPU, which * will not be the same as the current pCPU if the task was migrated. */ - spin_lock(&per_cpu(blocked_vcpu_on_cpu_lock, vcpu->pre_pcpu)); + raw_spin_lock(&per_cpu(blocked_vcpu_on_cpu_lock, vcpu->pre_pcpu)); list_del(&vcpu->blocked_vcpu_list); - spin_unlock(&per_cpu(blocked_vcpu_on_cpu_lock, vcpu->pre_pcpu)); + raw_spin_unlock(&per_cpu(blocked_vcpu_on_cpu_lock, vcpu->pre_pcpu)); dest = cpu_physical_id(vcpu->cpu); if (!x2apic_mode) @@ -181,10 +181,10 @@ int pi_pre_block(struct kvm_vcpu *vcpu) local_irq_save(flags); vcpu->pre_pcpu = vcpu->cpu; - spin_lock(&per_cpu(blocked_vcpu_on_cpu_lock, vcpu->cpu)); + raw_spin_lock(&per_cpu(blocked_vcpu_on_cpu_lock, vcpu->cpu)); list_add_tail(&vcpu->blocked_vcpu_list, &per_cpu(blocked_vcpu_on_cpu, vcpu->cpu)); - spin_unlock(&per_cpu(blocked_vcpu_on_cpu_lock, vcpu->cpu)); + raw_spin_unlock(&per_cpu(blocked_vcpu_on_cpu_lock, vcpu->cpu)); WARN(pi_desc->sn == 1, "Posted Interrupt Suppress Notification set before blocking"); @@ -224,7 +224,7 @@ void pi_wakeup_handler(void) struct kvm_vcpu *vcpu; int cpu = smp_processor_id(); - spin_lock(&per_cpu(blocked_vcpu_on_cpu_lock, cpu)); + raw_spin_lock(&per_cpu(blocked_vcpu_on_cpu_lock, cpu)); list_for_each_entry(vcpu, &per_cpu(blocked_vcpu_on_cpu, cpu), blocked_vcpu_list) { struct pi_desc *pi_desc = vcpu_to_pi_desc(vcpu); @@ -232,13 +232,13 @@ void pi_wakeup_handler(void) if (pi_test_on(pi_desc)) kvm_vcpu_kick(vcpu); } - spin_unlock(&per_cpu(blocked_vcpu_on_cpu_lock, cpu)); + raw_spin_unlock(&per_cpu(blocked_vcpu_on_cpu_lock, cpu)); } void __init pi_init_cpu(int cpu) { INIT_LIST_HEAD(&per_cpu(blocked_vcpu_on_cpu, cpu)); - spin_lock_init(&per_cpu(blocked_vcpu_on_cpu_lock, cpu)); + raw_spin_lock_init(&per_cpu(blocked_vcpu_on_cpu_lock, cpu)); } bool pi_has_pending_interrupt(struct kvm_vcpu *vcpu) |