RE: [PATCH] drm/fbdev-dma: fix getting smem_start

From: Peng Fan
Date: Mon Jun 10 2024 - 21:00:40 EST


> Subject: Re: [PATCH] drm/fbdev-dma: fix getting smem_start
>
> Hi
>
> Am 04.06.24 um 10:03 schrieb Peng Fan (OSS):
> > From: Peng Fan <peng.fan@xxxxxxx>
> >
> > If 'info->screen_buffer' locates in vmalloc address space,
> > virt_to_page will not be able to get correct results. With
> > CONFIG_DEBUG_VM and CONFIG_DEBUG_VIRTUAL enabled on ARM64,
> there is dump below:
>
> Which graphics driver triggers this bug?

It is NXP i.MX95 DPU driver which is still in NXP downstream repo.

Thanks,
Peng.