[PATCH v3 6/9] xen/pvh: Initialize grant table for PVH guests

From: Boris Ostrovsky
Date: Mon Feb 06 2017 - 12:01:46 EST


Like PV guests, PVH does not have PCI devices and therefore cannot
use MMIO space to store grants. Instead it balloons out memory and
keeps grants there.

Signed-off-by: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>
Reviewed-by: Juergen Gross <jgross@xxxxxxxx>
---
drivers/xen/grant-table.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/xen/grant-table.c b/drivers/xen/grant-table.c
index bb36b1e..d6786b8 100644
--- a/drivers/xen/grant-table.c
+++ b/drivers/xen/grant-table.c
@@ -1146,13 +1146,13 @@ EXPORT_SYMBOL_GPL(gnttab_init);

static int __gnttab_init(void)
{
+ if (!xen_domain())
+ return -ENODEV;
+
/* Delay grant-table initialization in the PV on HVM case */
- if (xen_hvm_domain())
+ if (xen_hvm_domain() && !xen_pvh_domain())
return 0;

- if (!xen_pv_domain())
- return -ENODEV;
-
return gnttab_init();
}
/* Starts after core_initcall so that xen_pvh_gnttab_setup can be called
--
2.7.4