1 files changed, 5 insertions, 0 deletions

diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h
index e1f5fcd79792..5ed7bdaf22d5 100644
--- a/include/linux/page-flags.h
+++ b/include/linux/page-flags.h
@@ -121,8 +121,12 @@ enum pageflags {
         PG_fscache = PG_private_2,      /* page backed by cache */
 
         /* XEN */
+        /* Pinned in Xen as a read-only pagetable page. */
         PG_pinned = PG_owner_priv_1,
+        /* Pinned as part of domain save (see xen_mm_pin_all()). */
         PG_savepinned = PG_dirty,
+        /* Has a grant mapping of another (foreign) domain's page. */
+        PG_foreign = PG_owner_priv_1,
 
         /* SLOB */
         PG_slob_free = PG_private,
@@ -215,6 +219,7 @@ __PAGEFLAG(Slab, slab)
 PAGEFLAG(Checked, checked)              /* Used by some filesystems */
 PAGEFLAG(Pinned, pinned) TESTSCFLAG(Pinned, pinned)     /* Xen */
 PAGEFLAG(SavePinned, savepinned);                       /* Xen */
+PAGEFLAG(Foreign, foreign);                             /* Xen */
 PAGEFLAG(Reserved, reserved) __CLEARPAGEFLAG(Reserved, reserved)
 PAGEFLAG(SwapBacked, swapbacked) __CLEARPAGEFLAG(SwapBacked, swapbacked)
         __SETPAGEFLAG(SwapBacked, swapbacked)