Messages in this thread | | | Subject | Re: a small doubt | From | Jes Sorensen <> | Date | 07 Oct 1999 16:21:08 +0200 |
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>>>>> "David" == David S Miller <davem@redhat.com> writes:
> From: Jes Sorensen <Jes.Sorensen@cern.ch> Date: 07 Oct 1999 > 14:34:36 +0200
> And a very bad one indeed since some architectures have page > 0 mapped.
David> Such architectures are mistaken, since they are not going to David> catch NULL pointer derefences in the kernel correctly in all David> such cases.
Nod, I don't want to chase bugs that way, however on some architectures it may be expensive working around not mapping page zero in kernel space.
I remember Alan moaning at me for relying on page zero not being mapped ages ago.
Jes
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