Re: [PATCH 01/04] Adding cipher mode context information to crypto_tfm

[Fruhwirth Clemens <clemens@endorphin.org>]

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On Mon, 2005-02-14 at 07:56 -0800, David S. Miller wrote:
> On Mon, 14 Feb 2005 14:20:34 +0100
> Fruhwirth Clemens <clemens@endorphin.org> wrote:
> 
> > Conclusion: The idea of high-mem and low-mem seperation is fundamentally
> > broken. The limitation of page table entries to a fixed set is causing
> > more complications than it solves. Laziness to do things right at memory
> > management shifts the burden to the users of the interface. 
> 
> Doing it "at memory management" is what many other OS's do and
> is incredibly costly especially on SMP systems.  Please ponder
> those issues for some time before you blast Linux's MM design
> decisions.  They were not made in a vacuum.

There is nothing wrong with having special methods, that lack generality
but are superior in performance. There is something wrong, when there
are no other. And there are no other for holding three kmappings or more
concurrently.

-- 
Fruhwirth Clemens <clemens@endorphin.org>  http://clemens.endorphin.org

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