linux-kernel - [PATCH v2 6/9] xen/pvh: Initialize grant table for PVH guests

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Message-Id: <1485459692-23961-7-git-send-email-boris.ostrovsky@oracle.com>
Date:   Thu, 26 Jan 2017 14:41:29 -0500
From:   Boris Ostrovsky <boris.ostrovsky@...cle.com>
To:     JGross@...e.com
Cc:     roger.pau@...rix.com, xen-devel@...ts.xenproject.org,
        linux-kernel@...r.kernel.org, boris.ostrovsky@...cle.com
Subject: [PATCH v2 6/9] xen/pvh: Initialize grant table for PVH guests

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@...cle.com>
---
Changes in v2:
* Updated commit message

 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 @@ int gnttab_init(void)
 
 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
-- 
1.8.3.1