tree b6d7f97159688c7a2ace2e3f1dc5bd21aa0feea1
parent 04aafdc6018feef590517b3900c19d911b8a456c
author Benjamin Herrenschmidt <benh@kernel.crashing.org> 1500439779 +1000
committer Michael Ellerman <mpe@ellerman.id.au> 1501740409 +1000

powerpc/mm: Move the DSISR_PROTFAULT sanity check

This has a page of comment explaining what's going on right in
the middle of do_page_fault() which makes things a bit hard to
follow. Move it to a helper instead. Also do the test earlier
as there's no point waiting until after we found the VMA.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>