kvm/x86: return meaningful value from KVM_SIGNAL_MSI

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If kvm_apic_map_get_dest_lapic() finds a disabled LAPIC,
it will return with bitmap==0 and (*r == -1) will be returned to
userspace.

QEMU may then record "KVM: injection failed, MSI lost
(Operation not permitted)" in its log, which is quite puzzling.

Reported-by: Peng Hao <penghao122@sina.com.cn>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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This commit is contained in:

Paolo Bonzini 2018-10-01 16:07:18 +02:00

parent 4fef0f4913

commit 0624fca951

1 changed files with 3 additions and 3 deletions

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6

arch/x86/kvm/lapic.c

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