Xen bug fixes for 3.17-rc0

- Fix ARM build.
- Fix boot crash with PVH guests.
- Improve reliability of resume/migration.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.12 (GNU/Linux)

iQEcBAABAgAGBQJT6y4zAAoJEFxbo/MsZsTRqI4H/3c+TXRjeB5787wkm3Lya1JO
5+DsbbtlM13PT+Oi0Zop7xUYMPya7Xkwix0FvFvJ/q0/NFMf6RDJREtRy7atRkkp
IRKccsGA/OH0ETcmQJOGHErnK51cAjMrm+ilJHIIYd6btEVCuP212G9f8CVGMyIK
r0U6sVUxTJ5TPOLjvv5e8Rz+iTtP+OXvxaf2+rcqAf1QAJJ6S6+ipJZjZemX8OR/
IoUPiee5Ou/ogQekt0f473vJrxX5nP7wLdJ2F7YA/A6F/HQHNbYDgQXf2IXrqFmb
DpkpXxaowZGKXwnwqHUr3pVDdeMpvYJKZDPZmTQq2htrXufHIiY/E3qr9wGjqxk=
=iVy1
-----END PGP SIGNATURE-----
x86/xen: use vmap() to map grant table pages in PVH guests

Commit b7dd0e350e0b (x86/xen: safely map and unmap grant frames when
in atomic context) causes PVH guests to crash in
arch_gnttab_map_shared() when they attempted to map the pages for the
grant table.

This use of a PV-specific function during the PVH grant table setup is
non-obvious and not needed.  The standard vmap() function does the
right thing.

Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Reported-by: Mukesh Rathor <mukesh.rathor@oracle.com>
Tested-by: Mukesh Rathor <mukesh.rathor@oracle.com>
Cc: stable@vger.kernel.org
1 file changed