Re: [Qemu-devel] [PATCH] Add option to disable FDC from ISA bus and ACPI on i386

[Alexander Graf]

On 09.01.2014, at 00:39, Gabriel L. Somlo <address@hidden> wrote:

> On Wed, Jan 08, 2014 at 11:13:54PM +0100, Paolo Bonzini wrote:
>> Have you played with the HPET device?  It would be nice to have Mac OS X
>> support in QEMU 2.0.
> 
> I remember telling you that the HPET needed an extra ACPI patch
> (enclosed again below for reference) to work with OS X, and that
> this patch conflicts with XP.
> 
> In the mean time, after some tinkering, it turns out that Q35 works
> fine without the patch. On PIIX, xnu crashes during boot with a "no
> HPET found" panic unless the patch is applied.
> 
> At this point, I'm tempted to just write off PIIX + OS X and declare
> Q35 as the only "supported" machine type, to keep things simple and
> avoid complicating the HPET ACPI code with if/then/else logic that
> depends on the return value of SMC._STA(), etc.

I think that's a great idea :).

> Let me know what you all think.
> 
> Thanks,
> --Gabriel
> 
> P.S. Another OS X issue is getting e1000 to "link up" (but in an earlier
> conversation it was decided that guest-specific hacks belong in the BIOS
> rather than in QEMU, so I still have a "todo" item to figure out where
> to put that patch, and how :)

Just put it straight into SeaBIOS :)


Alex