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| author | Ahmed S. Darwish <darwish.07@gmail.com> | 2008-02-09 23:24:09 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2008-02-09 23:24:09 +0100 |
| commit | 31f4b46ec6f889533c06537dea96bb0d20fa625b (patch) | |
| tree | 2d0f8e0fd534d5c6968fb722075f0f3733ff0ca3 /drivers/lguest | |
| parent | x86 PM: update stale comments (diff) | |
| download | linux-31f4b46ec6f889533c06537dea96bb0d20fa625b.tar.xz linux-31f4b46ec6f889533c06537dea96bb0d20fa625b.zip | |
lguest: accept guest _PAGE_PWT page table entries
Beginning from commit 4138cc3418f5, ioremap_nocache() sets the _PAGE_PWT
flag.
Lguest doesn't accept a guest pte with a _PWT flag and reports a "bad
page table entry" in that case.
Accept guest _PAGE_PWT page table entries.
Signed-off-by: Ahmed S. Darwish <darwish.07@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'drivers/lguest')
| -rw-r--r-- | drivers/lguest/page_tables.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/lguest/page_tables.c b/drivers/lguest/page_tables.c index 74b4cf2a6c41..275f23c2deb4 100644 --- a/drivers/lguest/page_tables.c +++ b/drivers/lguest/page_tables.c @@ -178,8 +178,8 @@ static void release_pte(pte_t pte) static void check_gpte(struct lg_cpu *cpu, pte_t gpte) { - if ((pte_flags(gpte) & (_PAGE_PWT|_PAGE_PSE)) - || pte_pfn(gpte) >= cpu->lg->pfn_limit) + if ((pte_flags(gpte) & _PAGE_PSE) || + pte_pfn(gpte) >= cpu->lg->pfn_limit) kill_guest(cpu, "bad page table entry"); } |