Drivers: hv: util: Specify ring buffer size using Hyper-V page size

VMbus ring buffers are sized based on the 4K page size used by Hyper-V. The Linux guest page size may not be 4K on all architectures so use the Hyper-V page size to specify the ring buffer size. Signed-off-by: Himadri Pandya <[email protected]> Reviewed-by: Michael Kelley <[email protected]> Signed-off-by: Sasha Levin <[email protected]>
kawasaki · Nov 22, 2019 · 0541a22 · 0541a22
1 parent b14d749
commit 0541a22
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/drivers/hv/hv_util.c b/drivers/hv/hv_util.c
@@ -413,8 +413,9 @@ static int util_probe(struct hv_device *dev,
 
 	hv_set_drvdata(dev, srv);
 
-	ret = vmbus_open(dev->channel, 4 * PAGE_SIZE, 4 * PAGE_SIZE, NULL, 0,
-			srv->util_cb, dev->channel);
+	ret = vmbus_open(dev->channel, 4 * HV_HYP_PAGE_SIZE,
+			 4 * HV_HYP_PAGE_SIZE, NULL, 0, srv->util_cb,
+			 dev->channel);
 	if (ret)
 		goto error;