[PATCH V2 19/31] powerpc/mm: Convert 4k hash insert to C
Benjamin Herrenschmidt
benh at kernel.crashing.org
Thu Oct 1 06:18:18 AEST 2015
On Wed, 2015-09-30 at 17:37 +0530, Anshuman Khandual wrote:
> > + if (unlikely(old_pte & _PAGE_BUSY))
> > + return 0;
> > + /* If PTE permissions don't match, take page fault */
>
> We are already in page fault interrupt path, will it be better
> if we call it "take Linux page fault" instead as we will go back
> walking the page table.
A better wording would be "escalate the page fault"
Cheers,
Ben.
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