Messages in this thread |  | | | Subject | Re: [PATCH] reduce export symbol CRC table size on 64-bit archs | | From | Jon Masters <> | | Date | Tue, 14 Jul 2009 06:29:32 -0400 |
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On Mon, 2009-07-13 at 09:44 +0100, Jan Beulich wrote: > >>> Michal Marek <mmarek@suse.cz> 13.07.09 10:11 >>> > >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.
Most of the distros can fix that with a dependency on the kernel package in the absolute worst case, not that I love that idea, but it happens. I assume for now we are going with detecting the two possibilities because it doesn't really hurt in any case to have this support.
Jon.
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