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

From: Wei Hu weh@microsoft.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@microsoft.com Signed-off-by: Wei Hu weh@microsoft.com

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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@microsoft.com