linux-kernel - Re: [PATCH v3 2/3] xen/privcmd: Add IOCTL_PRIVCMD_DM

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Date:   Tue, 14 Feb 2017 09:11:55 -0500
From:   Boris Ostrovsky <boris.ostrovsky@...cle.com>
To:     Paul Durrant <Paul.Durrant@...rix.com>,
        "xen-devel@...ts.xenproject.org" <xen-devel@...ts.xenproject.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Cc:     Juergen Gross <jgross@...e.com>
Subject: Re: [PATCH v3 2/3] xen/privcmd: Add IOCTL_PRIVCMD_DM_OP



On 02/14/2017 04:20 AM, Paul Durrant wrote:
> My previous reply got bounced because my tablet insisted on using HTML...
>
>> -----Original Message-----
>>
>> These need to be static. (I can fix it when committing.)
>
> Ok, thanks.
>
>>
>> And I am still not sure about using XEN_PAGE_SIZE. There is no
>> dependency in the hypervisor on buffers being page-sized, is there? If
>> not, XEN_PAGE_SIZE is here just because it happens to be 4K, which is a
>> reasonable value.
>>
>> How about just setting it to 4096?
>>
>
> I chose XEN_PAGE_SIZE because the hypercall will eventually copy in the buffer so it seemed like a reasonable value to use. If you want to just use 4096 then I am ok with that.
>
>   Paul
>
> PS: If you want to change from XEN_PAGE_SIZE to 4096 then I assume you are happy to do this at commit and don't need me to send a v4?

Right.

But I also had a question about patch 3 (commit message). I can make the 
change when committing as well but I need to make sure you are OK with it.

-boris