Re: [PATCH] reduce export symbol CRC table size on 64-bit archs

From: Michal Marek
Date: Mon Jul 13 2009 - 04:11:49 EST


Jan Beulich napsal(a):
> Actually I meanwhile think that module-init-tools can easily detect the changed
> layout without any further kernel side adjustments: Since it is known that a
> CRC always is a 32-bit value, simply checking whether the so-far-used 64-bit
> value has more than 32 significant bits should suffice: If so, the new layout
> is being used (with the symbol name starting at offset 4), else the old one is
> in effect (name at offset 8). This ought to be a pretty trivial change to that
> code.

But old module-init-tools will continue reading garbage in this case.

Michal
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