Commit 0541a225 authored Jul 25, 2019 by Himadri Pandya Committed by Sasha Levin Nov 21, 2019

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>

parent b14d749a

drivers/hv/hv_util.c

+3 −2

Original line number	Diff line number	Diff line
		@@ -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;

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