tree fccad0409c38a4cd845c82f407e2e77bd8dbfc47
parent cc0f21bbc12dc9f05b2e7f2469128f8717b2f4d3
author Arjan van de Ven <arjan@linux.intel.com> 1202140085 +0100
committer Ingo Molnar <mingo@elte.hu> 1202140085 +0100

x86: use the pfn from the page when change its attributes

When changing the attributes of a pte, we should use the PFN from the
existing PTE rather than going through hoops calculating what we think
it might have been; this is both fragile and totally unneeded. It also
makes it more hairy to call any of these functions on non-direct maps
for no good reason whatsover.

With this change, __change_page_attr() no longer takes a pfn as argument,
which simplifies all the callers.

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@tglx.de>