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| author | David Matlack <dmatlack@google.com> | 2016-12-16 14:30:36 -0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2017-01-12 14:33:17 +0100 |
| commit | cef84c302fe051744b983a92764d3fcca933415d (patch) | |
| tree | 86fc792e45f77560815fde5c000184647a5d1476 /arch/x86/kvm/lapic.h | |
| parent | b6416e61012429e0277bd15a229222fd17afc1c1 (diff) | |
| download | lwn-cef84c302fe051744b983a92764d3fcca933415d.tar.gz lwn-cef84c302fe051744b983a92764d3fcca933415d.zip | |
KVM: x86: flush pending lapic jump label updates on module unload
KVM's lapic emulation uses static_key_deferred (apic_{hw,sw}_disabled).
These are implemented with delayed_work structs which can still be
pending when the KVM module is unloaded. We've seen this cause kernel
panics when the kvm_intel module is quickly reloaded.
Use the new static_key_deferred_flush() API to flush pending updates on
module unload.
Signed-off-by: David Matlack <dmatlack@google.com>
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/lapic.h')
| -rw-r--r-- | arch/x86/kvm/lapic.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/kvm/lapic.h b/arch/x86/kvm/lapic.h index e0c80233b3e1..ff8039d61672 100644 --- a/arch/x86/kvm/lapic.h +++ b/arch/x86/kvm/lapic.h @@ -110,6 +110,7 @@ static inline bool kvm_hv_vapic_assist_page_enabled(struct kvm_vcpu *vcpu) int kvm_lapic_enable_pv_eoi(struct kvm_vcpu *vcpu, u64 data); void kvm_lapic_init(void); +void kvm_lapic_exit(void); #define VEC_POS(v) ((v) & (32 - 1)) #define REG_POS(v) (((v) >> 5) << 4) |