Re: [PATCH 2/6] 8xx: get rid of _PAGE_HWWRITE dependency in MMU.

Yes it does. If one adds HWEXEC it will fail, right?

Why ? We can just filter out DSISR, we don't really care why it failed
as long as we know whether it was a store or not.

Also this count as a read and you could easily end up
in the protection case(in 2.4 you do)

I'm not sure what you mean by "the protection case" Again, the C code
shouldn't care.

hey, I think you have to show how then :) I am not
good at ppc shift, mask, rotate insn.

They are so fun ! :-0

quoted

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Because if you go to C with a protection fault, you are in trouble.

Why ?

In 2.4 you end up in read protection fault an get a SEGV back :)

We probably should ignore the DSISR bits then. So it just goes to
generic C code which then fixes up ACCESSED etc... and returns.

Now I only handle DIRTY and the rest in C. Figured it is
much faster and really simplie now, stay tuned.

You should not even have to handle DIRTY at all in asm. At least in 2.6.
I can't vouch for what 2.4 generic code does... You should really port
your board over :-)

Cheers,
Ben.