If an IO port device has no io_in handler, kvm__emulate_io would fall through and call the io_out handler instead. Fix to only call the handler for the appropriate direction.
If no handler exists, kvm__emulate_io will automatically treat it as an IO error (due to the default "ret = false"). Signed-off-by: Josh Triplett <[email protected]> --- ioport.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/ioport.c b/ioport.c index 8c55a84..263fe50 100644 --- a/ioport.c +++ b/ioport.c @@ -192,7 +192,7 @@ bool kvm__emulate_io(struct kvm_cpu *vcpu, u16 port, void *data, int direction, while (count--) { if (direction == KVM_EXIT_IO_IN && ops->io_in) ret = ops->io_in(entry, vcpu, port, ptr, size); - else if (ops->io_out) + else if (direction == KVM_EXIT_IO_OUT && ops->io_out) ret = ops->io_out(entry, vcpu, port, ptr, size); ptr += size; -- 2.5.0 -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
