Re: [PATCH -mm] Revoke core code: fix nommu arch compiling error bug

From: Mike Frysinger
Date: Tue Mar 27 2007 - 13:01:17 EST


On 3/27/07, David Howells <dhowells@xxxxxxxxxx> wrote:
Note that it's not possible to shift windows around in response to faults
because fault reporting is asynchronous - the entire remaining instruction
queue will be executed *before* the exception is actually raised to the
kernel.

ah that would limit the usefulness of its application in the kernel
... thanks for the info

That sounds reasonable. However, I suspect that most NOMMU CPUs won't be able
to do that. In effect you're creating a third option, I think (MMU, NOMMU,
MPU).

sure, but i'm not sure the MPU option would be mutually exclusive with
NOMMU ... in the Blackfin case, we'd want both ...
-mike
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