Re: [PATCH 1/2] add helper for highmem checks

From: Borislav Petkov
Date: Mon Feb 11 2013 - 13:28:37 EST

On Mon, Feb 11, 2013 at 09:32:41AM -0800, Dave Hansen wrote:
> That's crazy. Didn't expect that at all.
> I guess X is happier getting an error than getting random pages back.

Yeah, I think this is something special only this window manager wdm
does. The line below has appeared repeatedly in the logs earlier:

Feb 5 23:02:02 a1 wdm: Cannot read randomFile "/dev/mem", errno = 14

This happens when wdm starts so I'm going to guess it uses it for
something funny, "randomFile" it calls it??

With the WARN_ON check added and booting 3.8-rc6, it would choke wdm
somehow and it wouldn't start properly so that even the error out above
doesn't happen. Oh well ...

> I'm working on a set of patches now that should get it _working_
> instead of just returning an error.

Yeah, send them on and I'll run them.



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