linux-kernel - RE: [PATCH] drm/hyperv: Fix double mouse pointers

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Message-ID: <MN2PR21MB12954E9D3C7F7BDF9B737214CAD99@MN2PR21MB1295.namprd21.prod.outlook.com>
Date:   Mon, 13 Sep 2021 19:39:42 +0000
From:   Haiyang Zhang <haiyangz@...rosoft.com>
To:     Dexuan Cui <decui@...rosoft.com>,
        "drawat.floss@...il.com" <drawat.floss@...il.com>,
        "airlied@...ux.ie" <airlied@...ux.ie>,
        "daniel@...ll.ch" <daniel@...ll.ch>,
        "tzimmermann@...e.de" <tzimmermann@...e.de>,
        "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>
CC:     "linux-hyperv@...r.kernel.org" <linux-hyperv@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH] drm/hyperv: Fix double mouse pointers



> -----Original Message-----
> From: Dexuan Cui <decui@...rosoft.com>
> Sent: Monday, September 13, 2021 2:27 PM
> To: drawat.floss@...il.com; Haiyang Zhang <haiyangz@...rosoft.com>;
> airlied@...ux.ie; daniel@...ll.ch; tzimmermann@...e.de; dri-
> devel@...ts.freedesktop.org
> Cc: linux-hyperv@...r.kernel.org; linux-kernel@...r.kernel.org; Dexuan
> Cui <decui@...rosoft.com>
> Subject: [PATCH] drm/hyperv: Fix double mouse pointers
> 
> It looks like Hyper-V supports a hardware cursor feature. It is not used
> by Linux VM, but the Hyper-V host still draws a point as an extra mouse
> pointer, which is unwanted, especially when Xorg is running.
> 
> The hyperv_fb driver uses synthvid_send_ptr() to hide the unwanted
> pointer.
> When the hyperv_drm driver was developed, the function
> synthvid_send_ptr()
> was not copied from the hyperv_fb driver. Fix the issue by adding the
> function into hyperv_drm.
> 
> Fixes: 76c56a5affeb ("drm/hyperv: Add DRM driver for hyperv synthetic
> video device")
> Signed-off-by: Dexuan Cui <decui@...rosoft.com>
> Cc: Deepak Rawat <drawat.floss@...il.com>
> Cc: Haiyang Zhang <haiyangz@...rosoft.com>
> ---
>  drivers/gpu/drm/hyperv/hyperv_drm.h         |  1 +
>  drivers/gpu/drm/hyperv/hyperv_drm_modeset.c |  1 +
>  drivers/gpu/drm/hyperv/hyperv_drm_proto.c   | 39 ++++++++++++++++++++-
>  3 files changed, 40 insertions(+), 1 deletion(-)

Thank you!
Reviewed-by: Haiyang Zhang <haiyangz@...rosoft.com>