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 <[email protected]> Cc: Matias Zabaljauregui <[email protected]> --- drivers/lguest/page_tables.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/lguest/page_tables.c b/drivers/lguest/page_tables.c --- a/drivers/lguest/page_tables.c +++ b/drivers/lguest/page_tables.c @@ -996,11 +996,9 @@ static unsigned long setup_pagetables(st 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 /* _______________________________________________ Virtualization mailing list [email protected] https://lists.linux-foundation.org/mailman/listinfo/virtualization
