Upstream qemu now has a fix for the HSM violations seen with ata_piix + qemu ATAPI devices. It would be good to get this change integrated and released into qemu packages to help out users using qemu to run Fedora and other guests using ata_piix for pata. Thread with patch at http://news.gmane.org/find-root.php?group=gmane.comp.emulators.qemu&article=19160 and it's been committed to qemu CVS now.
Created attachment 161883 [details] fix committed to upstream qemu
Fix has been built into rawhide in: * Tue Aug 28 2007 David Woodhouse <dwmw2> 0.9.0-4 - Fix CDROM emulation (#253542)
qemu-0.9.0-3.fc7 has been pushed to the Fedora 7 testing repository. If problems still persist, please make note of it in this bug report.
qemu-0.9.0-3.fc7 has been pushed to the Fedora 7 stable repository. If problems still persist, please make note of it in this bug report.