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

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Message-ID: <9328bb49eb634b0994e41f19733a373e@AMSPEX02CL03.citrite.net>
Date:   Tue, 14 Feb 2017 09:20:42 +0000
From:   Paul Durrant <Paul.Durrant@...rix.com>
To:     'Boris Ostrovsky' <boris.ostrovsky@...cle.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

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?

> 
> -boris