PPC64: G5 & 4k/64k page size (was: Re: Call for report - G5/PPC970 status)

[Romain Dolbeau]

Le lun. 6 janv. 2020 à 19:54, Lennart Sorensen
<lsorense at csclub.uwaterloo.ca> a écrit :
> Is it possible this has to do with nouveau and not supporting 64K page
> size on older nvidia chips?

Interesting idea (and I have a 6600 aka NV43 in there, indeed) but I
don't think so, as
a) 'nouveau' works in 4.19 with 64 KiB pages
b) using "module_blacklist=nouveau" doesn't help, I just tried
c) my original 'bisect' was probably using 'nouveau' when the kernel
was booting, so at least some 5.x w/o the offending commit and 64 KiB
pages is fine
d) to my untrained eye, the crash happens _before_ nouveau is loaded
(it seems to me I'm still on the OpenFirmware framebuffer, font change
occurs later).

Unfortunately I don't have a PCIe OpenFirmware ATI card to test the
theory further.
(... well I _do_ have a Sun XVR-300 ... technically it fits the bill ... )

Cordially,

-- 
Romain Dolbeau