From: Himadri Pandya <himadrispandya@gmail.com>
Date: Thu, 25 Jul 2019 05:03:15 +0000 (+0000)
Subject: Drivers: hv: util: Specify ring buffer size using Hyper-V page size
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=0541a225945d5e0d650353f51614812aa820c6be;p=linux.git

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 <himadri18.07@gmail.com>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/drivers/hv/hv_util.c b/drivers/hv/hv_util.c
index c2c08f26bd5f9..766bd84573461 100644
--- 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;