diff options
| author | Miaohe Lin <linmiaohe@huawei.com> | 2020-02-14 10:32:38 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-02-28 15:42:49 +0100 |
| commit | c306a08193a220c3fd1215930a930be6c91edee5 (patch) | |
| tree | f2124bc5a51243dfed2820d4037a3dd2698a4823 /arch/x86 | |
| parent | 1110a2d6b5b2ffd728395a515cd7acfe4c0e4899 (diff) | |
| download | linux-stable-c306a08193a220c3fd1215930a930be6c91edee5.tar.gz linux-stable-c306a08193a220c3fd1215930a930be6c91edee5.tar.bz2 linux-stable-c306a08193a220c3fd1215930a930be6c91edee5.zip | |
KVM: x86: don't notify userspace IOAPIC on edge-triggered interrupt EOI
commit 7455a8327674e1a7c9a1f5dd1b0743ab6713f6d1 upstream.
Commit 13db77347db1 ("KVM: x86: don't notify userspace IOAPIC on edge
EOI") said, edge-triggered interrupts don't set a bit in TMR, which means
that IOAPIC isn't notified on EOI. And var level indicates level-triggered
interrupt.
But commit 3159d36ad799 ("KVM: x86: use generic function for MSI parsing")
replace var level with irq.level by mistake. Fix it by changing irq.level
to irq.trig_mode.
Cc: stable@vger.kernel.org
Fixes: 3159d36ad799 ("KVM: x86: use generic function for MSI parsing")
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/kvm/irq_comm.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kvm/irq_comm.c b/arch/x86/kvm/irq_comm.c index 6c0191615f23..cf8b3c17657a 100644 --- a/arch/x86/kvm/irq_comm.c +++ b/arch/x86/kvm/irq_comm.c @@ -436,7 +436,7 @@ void kvm_scan_ioapic_routes(struct kvm_vcpu *vcpu, kvm_set_msi_irq(vcpu->kvm, entry, &irq); - if (irq.level && kvm_apic_match_dest(vcpu, NULL, 0, + if (irq.trig_mode && kvm_apic_match_dest(vcpu, NULL, 0, irq.dest_id, irq.dest_mode)) __set_bit(irq.vector, ioapic_handled_vectors); } |