Re: [Qemu-devel] [PATCH 00/25] q35 series take #1

[Alexander Graf]

On 14.09.2012, at 15:50, Jason Baron wrote:

> On Fri, Sep 14, 2012 at 12:29:17AM +0200, Alexander Graf wrote:
>> On 13.09.2012, at 22:12, Jason Baron wrote:
>> 
>>> Hi,
>>> 
>>> Qemu bits for q35 support, I'm posting the seabios changes separately. The
>>> patches require '-M pc_q35' and -L 'seabios dir with q35 changes' on the
>>> qemu command line. Hopefully, we can make it the default for x86 at some 
>>> future
>>> point when we feel comfortable with it.
>> 
>> Without having had a real look at the code in detail yet, how did you design 
>> the PCI-ISA bridge (LPC device)? I'm asking mostly because Mac OS X 
>> unconditionally accesses that device's PCI config space to find the base 
>> address of the HPET.
>> 
> 
> The LPC device is inherits from TYPE_PCI_DEVICE, and has modeling for
> configuring pmbase (where the power management io region resides) and
> for configuring pirq irq routing. It does not have the addr for the
> HPET. I'll have to check the spec and see where it resides.

I have a patch that creates a fake lpc device with the correct regions to make 
osx happy:

  
http://svn.exactcode.de/t2/trunk/package/emulators/kvm/03-qemu-lpc.patch.disable

That might be useful as a starting point :).


Alex