Jan Beulich 545c837d67 Xen/gnttab: handle p2m update errors on a per-slot basis ... commit 8310b77b48 upstream. Bailing immediately from set_foreign_p2m_mapping() upon a p2m updating error leaves the full batch in an ambiguous state as far as the caller is concerned. Instead flags respective slots as bad, unmapping what was mapped there right away. HYPERVISOR_grant_table_op()'s return value and the individual unmap slots' status fields get used only for a one-time - there's not much we can do in case of a failure. Note that there's no GNTST_enomem or alike, so GNTST_general_error gets used. The map ops' handle fields get overwritten just to be on the safe side. This is part of XSA-367. Cc: <stable@vger.kernel.org> Signed-off-by: Jan Beulich <jbeulich@suse.com> Reviewed-by: Juergen Gross <jgross@suse.com> Link: https://lore.kernel.org/r/96cccf5d-e756-5f53-b91a-ea269bfb9be0@suse.com Signed-off-by: Juergen Gross <jgross@suse.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2021-03-07 12:34:15 +01:00
..
enlighten.c	arm/xen: Don't probe xenbus as part of an early initcall	2021-02-17 11:02:21 +01:00
grant-table.c	xen: re-introduce support for grant v2 interface	2017-11-06 15:50:17 -05:00
hypercall.S	get rid of legacy 'get_ds()' function	2019-03-04 10:50:14 -08:00
Makefile	xen/efi: have a common runtime setup function	2019-10-02 10:31:07 -04:00
mm.c	dma-mapping updates for 5.10	2020-10-15 14:43:29 -07:00
p2m.c	Xen/gnttab: handle p2m update errors on a per-slot basis	2021-03-07 12:34:15 +01:00