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xen: unpin initial Xen pagetable once we're finished with it

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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>
This commit is contained in:
Jeremy Fitzhardinge 2008-02-13 16:20:35 +01:00 committed by Ingo Molnar
parent 37cc8d7f96
commit 2b5407811d
1 changed files with 4 additions and 0 deletions
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4
arch/x86/xen/enlighten.c
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@ -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)