mirror of
https://github.com/torvalds/linux
synced 2024-09-06 18:01:05 +00:00
KVM: x86: WARN if APIC HW/SW disable static keys are non-zero on unload
WARN if the static keys used to track if any vCPU has disabled its APIC are left elevated at module exit. Unlike the underflow case, nothing in the static key infrastructure will complain if a key is left elevated, and because an elevated key only affects performance, nothing in KVM will fail if either key is improperly incremented. Signed-off-by: Sean Christopherson <seanjc@google.com> Message-Id: <20211013003554.47705-3-seanjc@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
parent
f7d8a19f9a
commit
9139a7a645
|
@ -2946,5 +2946,7 @@ int kvm_apic_accept_events(struct kvm_vcpu *vcpu)
|
|||
void kvm_lapic_exit(void)
|
||||
{
|
||||
static_key_deferred_flush(&apic_hw_disabled);
|
||||
WARN_ON(static_branch_unlikely(&apic_hw_disabled.key));
|
||||
static_key_deferred_flush(&apic_sw_disabled);
|
||||
WARN_ON(static_branch_unlikely(&apic_sw_disabled.key));
|
||||
}
|
||||
|
|
Loading…
Reference in a new issue