Messages in this thread | | | Date | Wed, 26 Jan 2005 11:01:36 +1100 | From | Anton Blanchard <> | Subject | Re: [PATCH] Use MM_VM_SIZE in exit_mmap |
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Hi,
> I don't think Anton can count. (and for some reason I seem to be missing > his mail at the moment.) > > include/asm-arm/pgtable.h:#define FIRST_USER_PGD_NR 1 > > there's two. FIRST_USER_PGD_NR was created specifically for ARM because > many of our CPUs place their hardware vector tables at *virtual* address > zero. Unmapping this virtual page would be rather bad for the system - > consider the effect of unmapping the code for *all* CPU exceptions.
It does look like I have trouble counting past 1 :) Lets forget that proposal, it was just a minor cleanup anyway.
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