xen: pvhvm: rename xen_emul_unplug=ignore to =unnnecessary

It is not immediately clear what this option causes to become
ignored. The actual meaning is that it is not necessary to unplug the
emulated devices to safely use the PV ones, even if the platform does
not support the unplug protocol. (pressumably the user will only add
this option if they have ensured that their domain configuration is
safe).

I think xen_emul_unplug=unnecessary better captures this.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Acked-by: Stefano Stabellini <Stefano.Stabellini@eu.citrix.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c
index ac1b682edecb..ab735a605cf3 100644
--- a/drivers/block/xen-blkfront.c
+++ b/drivers/block/xen-blkfront.c
@@ -834,7 +834,7 @@ static int blkfront_probe(struct xenbus_device *dev,
                 char *type;
                 int len;
                 /* no unplug has been done: do not hook devices != xen vbds */
-                if (xen_platform_pci_unplug & XEN_UNPLUG_IGNORE) {
+                if (xen_platform_pci_unplug & XEN_UNPLUG_UNNECESSARY) {
                         int major;
 
                         if (!VDEV_IS_EXTENDED(vdevice))