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| author |   Pekka Paalanen <pq@iki.fi> | 2009-03-01 16:11:58 +0200 |
|---|---|---|
| committer |   Ingo Molnar <mingo@elte.hu> | 2009-03-02 10:20:36 +0100 |
| commit | 5359b585fb5edb3db34d6cd491e1475b098c61d3 (patch) | |
| tree | c7b743a28a0561977777e8d30ef64ba70b745ef2 /lib/locking-selftest.c | |
| parent | x86 mmiotrace: WARN_ONCE if dis/arming a page fails (diff) | |
| download | linux-dev-5359b585fb5edb3db34d6cd491e1475b098c61d3.tar.xz linux-dev-5359b585fb5edb3db34d6cd491e1475b098c61d3.zip | |
x86 mmiotrace: fix save/restore page table state
From baa99e2b32449ec7bf147c234adfa444caecac8a Mon Sep 17 00:00:00 2001
From: Pekka Paalanen <pq@iki.fi>
Date: Sun, 22 Feb 2009 20:02:43 +0200
Blindly setting _PAGE_PRESENT in disarm_kmmio_fault_page() overlooks the
possibility, that the page was not present when it was armed.
Make arm_kmmio_fault_page() store the previous page presence in struct
kmmio_fault_page and use it on disarm.
This patch was originally written by Stuart Bennett, but Pekka Paalanen
rewrote it a little different.
Signed-off-by: Pekka Paalanen <pq@iki.fi>
Cc: Stuart Bennett <stuart@freedesktop.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'lib/locking-selftest.c')
0 files changed, 0 insertions, 0 deletions