linux-kernel - Re: [PATCH v2] allow xenfb initialization for hvm guests

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Message-ID: <20140103203422.GA2668@phenom.dumpdata.com>
Date:	Fri, 3 Jan 2014 15:34:22 -0500
From:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
To:	Stefano Stabellini <stefano.stabellini@...citrix.com>
Cc:	xen-devel@...ts.xensource.com, linux-kernel@...r.kernel.org,
	boris.ostrovsky@...cle.com, plagnioj@...osoft.com,
	tomi.valkeinen@...com, linux-fbdev@...r.kernel.org
Subject: Re: [PATCH v2] allow xenfb initialization for hvm guests

On Fri, Jan 03, 2014 at 07:02:09PM +0000, Stefano Stabellini wrote:

The title needs 'xen/fb' prefixed but that is easy enough.

> There is no reasons why an HVM guest shouldn't be allowed to use xenfb.
> As a matter of fact ARM guests, HVM from Linux POV, can use xenfb.
> Given that no Xen toolstacks configure a xenfb backend for x86 HVM
> guests, they are not affected.
> 
> Please note that at this time QEMU needs few outstanding fixes to
> provide xenfb on ARM:
> 
> http://marc.info/?l=qemu-devel&m=138739419700837&w=2

Cool. Is the video maintainer OK with the Xen maintainers stashing it
in the Xen tree for Linus?

Thanks!
> 
> Signed-off-by: Stefano Stabellini <stefano.stabellini@...citrix.com>
> Acked-by: David Vrabel <david.vrabel@...rix.com>
> CC: boris.ostrovsky@...cle.com
> CC: plagnioj@...osoft.com
> CC: tomi.valkeinen@...com
> CC: linux-fbdev@...r.kernel.org
> CC: konrad.wilk@...cle.com
> ---
>  drivers/video/xen-fbfront.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/video/xen-fbfront.c b/drivers/video/xen-fbfront.c
> index cd005c2..02e1c01 100644
> --- a/drivers/video/xen-fbfront.c
> +++ b/drivers/video/xen-fbfront.c
> @@ -692,7 +692,7 @@ static DEFINE_XENBUS_DRIVER(xenfb, ,
>  
>  static int __init xenfb_init(void)
>  {
> -	if (!xen_pv_domain())
> +	if (!xen_domain())
>  		return -ENODEV;
>  
>  	/* Nothing to do if running in dom0. */
> -- 
> 1.7.10.4
> 
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