]> pilppa.com Git - linux-2.6-omap-h63xx.git/commit
[PATCH] paravirt: fix missing pte update
authorZachary Amsden <zach@vmware.com>
Thu, 7 Dec 2006 01:14:09 +0000 (02:14 +0100)
committerAndi Kleen <andi@basil.nowhere.org>
Thu, 7 Dec 2006 01:14:09 +0000 (02:14 +0100)
commit8ecb8950695e907ed25acffec9e98c6806e311c8
treedfa4a6cf29b1f6fe173a0d6998b3f3fb55b5422f
parentdfbea0ad50e08c52539bddce977b07f77a762ba4
[PATCH] paravirt: fix missing pte update

The function ptep_get_and_clear uses an atomic instruction sequence to get and
clear an active pte.  Rather than add such an atomic operator to all virtual
machine implementations in paravirt-ops, it is easier to support the raw
atomic sequence and use either a trapping writable pagetable approach, or a
post-update notification.  For the post update notification, we require the
pte_update function to be called after the access.  Combine the 2-level and
3-level paging operators into one common function which does the post-update
notification, and rename the actual atomic sequences to raw_ptep_xxx
operators.

Signed-off-by: Zachary Amsden <zach@vmware.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Cc: Andi Kleen <ak@muc.de>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
include/asm-i386/pgtable-2level.h
include/asm-i386/pgtable-3level.h
include/asm-i386/pgtable.h