> > I am using a windows named pipe to get the data from a window > > host program, which uses ReadFile () in char_win.c > > OK, bugs in the windows-specific char backend would be > unsurprising. > > I'm not entirely sure how the chardev layer works, but > at the pl011 end if we return 0 from our can_receive > function then the chardev layer should decide it has > nothing to do until the pl011 later calls > qemu_chr_fe_accept_input(), I think. > > I've cc'd Paolo and Marc-André Lureau as the chardev > maintainers.
Windows named pipes do not support the equivalent of "select", so it's possible that they cause a busy wait. Try using a TCP socket instead and see if the bug goes away. Paolo
