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Date:   Fri, 26 Jul 2019 09:07:09 -0700
From:   Stephen Hemminger <stephen@networkplumber.org>
To:     "Himadri Pandya" <himadrispandya@gmail.com>
Cc:     "Michael Kelley" <Michael.H.Kelley@microsoft.com>,
        "KY Srinivasan" <kys@messages.microsoft.com>,
        "Haiyang Zhang" <haiyangz@microsoft.com>,
        "Stephen Hemminger" <sthemmin@microsoft.com>, <sashal@kernel.org>,
        <linux-hyperv@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
        "himadri18.07" <himadri18.07@gmail.com>
Subject: Re: [PATCH 1/2] Drivers: hv: Specify receive buffer size using
 Hyper-V page size
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In-Reply-To: <20190725050315.6935-2-himadri18.07@gmail.com>
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        <20190725050315.6935-2-himadri18.07@gmail.com>
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On Wed, 24 Jul 2019 22:03:14 -0700
"Himadri Pandya" <himadrispandya@gmail.com> wrote:

> The recv_buffer is used to retrieve data from the VMbus ring buffer.
> VMbus ring buffers are sized based on the guest page size which
> Hyper-V assumes to be 4KB. But it may be different on some
> architectures. So use the Hyper-V page size to allocate the
> recv_buffer and set the maximum size to receive.
> 
> Signed-off-by: Himadri Pandya <himadri18.07@gmail.com>

If pagesize is 64K, then doing it this way will waste lots of
memory.