Re: 2.6.23-rc1 regression: mm: fix fault vs invalidate race for linear mappings

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On 7/24/07, Nick Piggin <[email protected]> wrote:
Bret Towe wrote:
> for a while in -git I've had an issue that on boot when gdm loads the
> screen stays black
> using ctrl-f1 doesn't return to a console and killing X doesn't help any
> ssh'ing into the box does work top only shows 100% io-wait
> dmesg shows nothing odd
>
> the work around I have is at the moment is to just move the radeon drm
> module
> out of the way so it doesn't load on boot and X works just fine like that
> I did some bisecting which took a few days and tracked it down to
> commit d00806b183152af6d24f46f0c33f14162ca1262a
>
> its way to complex for me to revert it on top of -rc1 to verify that's
> the issue tho
> I keep forgetting to get a trace of what its waiting on when I'm in that
> kernel
> I assume that would be of use and Ill get that later
>
> the box this is happening on is a g4 mac mini the built in card is a
> radeon 9200
> I'm not seeing any issues on an amd64 box with radeon card it's also a
> 9600 tho

Is this with a binary-only module? We saw an issue with that in SLES9
where the module is returning a locked page from its nopage handler
when it isn't really supposed to. It might be fixed in latest drivers,
have you tried them?

you mean the drivers ati releases? no its all open source drivers
I didn't think ati release powerpc versions of their drivers?
not that id use them ether way

Thanks,
Nick

--
SUSE Labs, Novell Inc.
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