Re: [PATCH] parisc: check hardcoded value of SHMLBA against value reported by firmware

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On Tue, 2013-10-29 at 22:05 +0100, Helge Deller wrote:
> Our value of SHMLBA is hardcoded to 4MB on parisc due to aliasing restrictions
> of the platform. The firmware function PDC_CACHE does return the machine
> dependend value of this aliasing requirement.
> So, if there is a difference between those two - which we don't expect - let's
> report it at least.

We know that architecturally it's defined to be 16MB.  However, we also
know from the chip architects that the greatest stride ever done or
planned was 4MB, which is why we use it.  HPUX does the same, so there's
not much point issuing a warning, because it's likely that IODC isn't
setting up the values correctly and there's nothing a warning will
achieve except worrying the users if they bother to read it.

James


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