From fb100d78c04ff6053047625d0368d0d4b1d9912a Mon Sep 17 00:00:00 2001 From: Rusty Russell Date: Wed, 23 Sep 2009 22:26:46 -0600 Subject: lguest: use PGDIR_SHIFT for PAE code to allow different PAGE_OFFSET We still assume the Guest and Host have the same PAGE_OFFSET settings, but now we don't assume 0xC0000000. Signed-off-by: Rusty Russell Cc: Matias Zabaljauregui --- drivers/lguest/page_tables.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) (limited to 'drivers/lguest') diff --git a/drivers/lguest/page_tables.c b/drivers/lguest/page_tables.c index 232fba6a4882..bf37a31c0e05 100644 --- a/drivers/lguest/page_tables.c +++ b/drivers/lguest/page_tables.c @@ -996,11 +996,9 @@ static unsigned long setup_pagetables(struct lguest *lg, if (copy_to_user(&pgdir[0], &pgd, sizeof(pgd)) != 0) return -EFAULT; /* - * And the third PGD entry (ie. addresses 3G-4G). - * - * FIXME: This assumes that PAGE_OFFSET for the Guest is 0xC0000000. + * And the other PGD entry to make the linear mapping at PAGE_OFFSET */ - if (copy_to_user(&pgdir[3], &pgd, sizeof(pgd)) != 0) + if (copy_to_user(&pgdir[KERNEL_PGD_BOUNDARY], &pgd, sizeof(pgd))) return -EFAULT; #else /* -- cgit v1.2.3-59-g8ed1b