linux-kernel - RE: [PATCH v4] video: hyperv: hyperv_fb: Obtain screen resolution from Hyper-V host

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Message-ID: <DM5PR21MB0137D40DF705CDB372497266D7BB0@DM5PR21MB0137.namprd21.prod.outlook.com>
Date:   Thu, 5 Sep 2019 14:05:49 +0000
From:   Michael Kelley <mikelley@...rosoft.com>
To:     Wei Hu <weh@...rosoft.com>,
        "b.zolnierkie@...sung.com" <b.zolnierkie@...sung.com>,
        "linux-hyperv@...r.kernel.org" <linux-hyperv@...r.kernel.org>,
        "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
        "linux-fbdev@...r.kernel.org" <linux-fbdev@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Stephen Hemminger <sthemmin@...rosoft.com>,
        "sashal@...nel.org" <sashal@...nel.org>,
        Haiyang Zhang <haiyangz@...rosoft.com>,
        KY Srinivasan <kys@...rosoft.com>,
        Dexuan Cui <decui@...rosoft.com>
CC:     Iouri Tarassov <iourit@...rosoft.com>
Subject: RE: [PATCH v4] video: hyperv: hyperv_fb: Obtain screen resolution
 from Hyper-V host

From: Wei Hu <weh@...rosoft.com> Sent: Thursday, September 5, 2019 2:12 AM
> 
> Beginning from Windows 10 RS5+, VM screen resolution is obtained from host.
> The "video=hyperv_fb" boot time option is not needed, but still can be
> used to overwrite what the host specifies. The VM resolution on the host
> could be set by executing the powershell "set-vmvideo" command.
> 
> Signed-off-by: Iouri Tarassov <iourit@...rosoft.com>
> Signed-off-by: Wei Hu <weh@...rosoft.com>
> ---
>     v2:
>     - Implemented fallback when version negotiation failed.
>     - Defined full size for supported_resolution array.
> 
>     v3:
>     - Corrected the synthvid major and minor version comparison problem.
> 
>     v4:
>     - Changed function name to synthvid_ver_ge().
> 
>  drivers/video/fbdev/hyperv_fb.c | 159 +++++++++++++++++++++++++++++---
>  1 file changed, 147 insertions(+), 12 deletions(-)
> 

Reviewed-by: Michael Kelley <mikelley@...rosoft.com>