Re: [PATCH] ppc64: Fix possible race with set_pte on a present PTE
From: Linus Torvalds
Date: Tue May 25 2004 - 16:57:30 EST
On Wed, 26 May 2004, Benjamin Herrenschmidt wrote:
>
> Well, just setting one of those 2 bits doesn't require a hash table
> invalidate as long as nothing else changes.
Ok. And nothing ever writes to the SW page tables outside the page table
lock, right? So on ppc64, we could just do
#define ptep_update_dirty_accessed(ptep, entry, dirty) \
*(ptep) = (entry)
and be done with it. No?
I'm not going to do it without a big ack from you.
Linus
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