Thread (37 messages) flat view 37 messages, 3 authors, 2009-10-09

Re: [PATCH 3/6] 8xx: invalidate non present TLBs

From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Date: 2009-10-08 20:44:28

One could try clearing the store bit in the page fault handler, but then
that might cause a loop.
Not sure it has any practical meaning though.

Anyhow, you are welcome to have a look at the patches I have been tossing out.
The store bit in do_page_fault() is -very- important (and the only DSISR
bit that is as I wrote earlier). The generic code must know if a fault
is caused by a load or a store since the later is what will cause
copy_on_write to happen for example, or dirty to be set, etc..

Ben.
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