On 03/07/18 20:24, Sebastian Bauer wrote:
Am 2018-07-03 21:00, schrieb Mark Cave-Ayland:
On 03/07/18 06:58, David Gibson wrote:
From: Sebastian Bauer <m...@sebastianbauer.info>
Drivers for this card exists on PPC-based AmigaOS guests so it is
useful to
allow users to emulate the graphics card for PPC machines.
As cirrus vga is currently preferred over std(vga) in absence of any
user
choice, this change also sets the default display of spapr machines to
std as otherwise qemu refuses to start these machines.
... which has quite nicely broken the VGA display for both the PPC Mac
machines. Patch to follow shortly.
Please see my note in the comment section of the patch where I propose
two possible solutions:
Either to give up the vga cirrus preference or to apply the same as was
done with the spapr machine. I would prefer the first variant but it
would also cause some differences on other machines.
I understand that the decision was taken to add VGA cirrus to the PPC
build and therefore accept the default VGA device change, however your
the commit message only mentions spapr and not all the other PPC
machines whose defaults are also potentially affected:
$ ./qemu-system-ppc -M ?
Supported machines are:
40p IBM RS/6000 7020 (40p)
bamboo bamboo
g3beige Heathrow based PowerMAC (default)
mac99 Mac99 based PowerMAC
mpc8544ds mpc8544ds
none empty machine
ppce500 generic paravirt e500 platform
prep PowerPC PREP platform
ref405ep ref405ep
sam460ex aCube Sam460ex
taihu taihu
virtex-ml507 Xilinx Virtex ML507 reference design
I'm not able to personally validate all of these, but a quick check
shows that at least both PReP machines (-M prep and -M 40p) are also
broken by this patch which tells me it hasn't had much testing.
David, do you know what the defaults are for the other PPC machines in
order for Sebastian to test and send a follow-up patch?
ATB,
Mark.