Re: [Fwd: TASK_SIZE is variable.]

[David Woodhouse]

On Tue, 2005-01-25 at 22:46 +0000, Christoph Hellwig wrote:
> > Bad things can happen if a 32-bit process is the last user of a 64-bit
> > mm. TASK_SIZE isn't a constant, and we can end up clearing page tables
> > only up to the 32-bit TASK_SIZE instead of all the way. We should
> > probably double-check every instance of TASK_SIZE or USER_PTRS_PER_PGD
> > for this kind of problem.
> 
> Or better get rid of TASK_SIZE completely.  Having something that looks
> like a constant change depending on the user process is a bad idea.

Yeah, that's possibly a sane plan.

-- 
dwmw2


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