On 06.03.2017 22:49, Howard Spoelstra wrote: > Hi, > > I noticed qemu-system-ppc currently has difficulty booting Mac OS > 9.2.1/9.2.2 iso's. Even after 5 minutes the happy mac hasn't appeared. > This does not happen with 9.0.4 or 9.1 iso's, or PPC OS X versions. > > I bisected to this commit: > > 95ed56939eb2eaa4e2f349fe6dcd13ca4edfd8fb is the first bad commit > commit 95ed56939eb2eaa4e2f349fe6dcd13ca4edfd8fb > Author: Li Qiang <liqiang...@360.cn> > Date: Tue Feb 7 02:23:33 2017 -0800 > > usb: ohci: limit the number of link eds > > The guest may builds an infinite loop with link eds. This patch > limit the number of linked ed to avoid this. > > Signed-off-by: Li Qiang <liqiang...@360.cn> > Message-id: 5899a02e.45ca240a.6c373.9...@mx.google.com > Signed-off-by: Gerd Hoffmann <kra...@redhat.com> > > After reverting boot time is ~20 seconds. > > It seems setting "#define ED_LINK_LIMIT 4" in hw/usb/hcd-ohci.c to a > higher limit solves this issue.
Could you maybe find out the lowest value for that define which is still working fine with that version of Mac OS ? Thanks, Thomas
