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authorJeremy Fitzhardinge <jeremy@xensource.com>2008-02-13 18:20:35 +0300
committerIngo Molnar <mingo@elte.hu>2008-02-13 18:20:35 +0300
commit2b5407811db755257ae53c75cc6b312ed5d2ad9e (patch)
treeb81a01b5c05aa41bde1830044267990d52b08edb
parent37cc8d7f963ba2deec29c9b68716944516a3244f (diff)
downloadlinux-2b5407811db755257ae53c75cc6b312ed5d2ad9e.tar.xz
xen: unpin initial Xen pagetable once we're finished with it
Unpin the Xen-provided pagetable once we've finished with it, so it doesn't cause stray references which cause later swapper_pg_dir pagetable updates to fail. Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Tested-by: Jody Belka <knew-linux@pimb.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
-rw-r--r--arch/x86/xen/enlighten.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index de647bc6e74d..49e5358f481a 100644
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -798,6 +798,10 @@ static __init void xen_pagetable_setup_start(pgd_t *base)
* added to the table can be prepared properly for Xen.
*/
xen_write_cr3(__pa(base));
+
+ /* Unpin initial Xen pagetable */
+ pin_pagetable_pfn(MMUEXT_UNPIN_TABLE,
+ PFN_DOWN(__pa(xen_start_info->pt_base)));
}
static __init void xen_pagetable_setup_done(pgd_t *base)