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From: Himadri Pandya <himadrispandya@gmail.com>
To: mikelley@microsoft.com, kys@microsoft.com,
	haiyangz@microsoft.com, sthemmin@microsoft.com,
	sashal@kernel.org
Cc: linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org,
	Himadri Pandya <himadri18.07@gmail.com>
Subject: [PATCH 2/2] Drivers: hv: util: Specify ring buffer size using Hyper-V page size
Date: Thu, 25 Jul 2019 05:03:15 +0000	[thread overview]
Message-ID: <20190725050315.6935-3-himadri18.07@gmail.com> (raw)
In-Reply-To: <20190725050315.6935-1-himadri18.07@gmail.com>

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>
---
 drivers/hv/hv_util.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/hv/hv_util.c b/drivers/hv/hv_util.c
index c2c08f26bd5f..766bd8457346 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;
 
-- 
2.17.1


  parent reply	other threads:[~2019-07-25  5:03 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-07-25  5:03 [PATCH 0/2] Drivers: hv: Specify " Himadri Pandya
2019-07-25  5:03 ` [PATCH 1/2] Drivers: hv: Specify receive " Himadri Pandya
2019-07-26 16:07   ` Stephen Hemminger
2019-07-25  5:03 ` Himadri Pandya [this message]
2019-07-26 16:06   ` [PATCH 2/2] Drivers: hv: util: Specify ring " Stephen Hemminger
     [not found] ` <DM5PR21MB01377E1E6DE541E902A12EEFD7B80@DM5PR21MB0137.namprd21.prod.outlook.com>
2019-10-04 15:29   ` [PATCH 0/2] Drivers: hv: Specify " Sasha Levin

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