On Wed, Nov 20, 2013 at 12:11:35PM -0800, Matt Wilson wrote: > From: Matt Wilson <[email protected]> > > Commit f62805f1 introduced a bug where lazy MMU mode isn't exited if a > m2p_add/remove_override call fails.
Stefano? > > Cc: Stefano Stabellini <[email protected]> > Cc: Konrad Rzeszutek Wilk <[email protected]> > Cc: Boris Ostrovsky <[email protected]> > Cc: David Vrabel <[email protected]> > Cc: Anthony Liguori <[email protected]> > Cc: [email protected] > Cc: [email protected] > Signed-off-by: Matt Wilson <[email protected]> > --- > drivers/xen/grant-table.c | 6 ++++-- > 1 file changed, 4 insertions(+), 2 deletions(-) > > diff --git a/drivers/xen/grant-table.c b/drivers/xen/grant-table.c > index 62ccf54..0283871 100644 > --- a/drivers/xen/grant-table.c > +++ b/drivers/xen/grant-table.c > @@ -930,9 +930,10 @@ int gnttab_map_refs(struct gnttab_map_grant_ref *map_ops, > ret = m2p_add_override(mfn, pages[i], kmap_ops ? > &kmap_ops[i] : NULL); > if (ret) > - return ret; > + goto out; > } > > + out: > if (lazy) > arch_leave_lazy_mmu_mode(); > > @@ -969,9 +970,10 @@ int gnttab_unmap_refs(struct gnttab_unmap_grant_ref > *unmap_ops, > ret = m2p_remove_override(pages[i], kmap_ops ? > &kmap_ops[i] : NULL); > if (ret) > - return ret; > + goto out; > } > > + out: > if (lazy) > arch_leave_lazy_mmu_mode(); > > -- > 1.7.9.5 > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
