Re: [Qemu-devel] [Bug 1276879] Re: lots of dma command 10, 14 not supported

[BALATON Zoltan]

On Thu, 6 Feb 2014, tyler knosis wrote:
> p.s.  I tried Bochs 2.6.2, and it is not stuck at the same place.  Did qemu 
> take the bochs bios
> and change anything regarding the IDE drives?

With OPENSTEP 4.2 a similar irq hang is happening due to a bug in the 
i8259 model which is fixed by the one liner patch referenced here:

http://lists.nongnu.org/archive/html/qemu-devel/2013-10/msg03329.html

so it's most probably not a BIOS problem. The fix was not merged though 
due to some risks with migration and maybe other bugs that could currently 
be masked by this one but I don't know if the risks are well understood. 
Some discussion can be found in this thread:

http://lists.nongnu.org/archive/html/qemu-devel/2013-01/msg02396.html

Could you please let us know if this fixes the irq timeout you are seeing 
with NeXTSTEP too? The dma commands are something else though that may not 
be related.