[PATCH v3 21/43] drm/fbdev-dma: Implement damage handling and deferred I/O

[Linus Walleij]

On Wed, Sep 4, 2024 at 8:09 AM Alexander Stein
<alexander.stein at ew.tq-group.com> wrote:

> Can you please check in which memory zone this VRAM is located. In my case
> it's important CMA is located in Normal zone to trigger this problem.

dmesg says this:

Reserved memory: created DMA memory pool at 0x18000000, size 8 MiB
OF: reserved mem: initialized node vram at 18000000, compatible id shared-dma-pool
OF: reserved mem: 0x18000000..0x187fffff (8192 KiB) nomap non-reusable
vram at 18000000
cma: Reserved 16 MiB at 0xef000000 on node -1
Zone ranges:
  Normal   [mem 0x0000000080000000-0x00000000efffffff]
Movable zone start for each node
Early memory node ranges
  node   0: [mem 0x0000000080000000-0x00000000efffffff]
Initmem setup node 0 [mem 0x0000000080000000-0x00000000efffffff]
percpu: Embedded 15 pages/cpu s39052 r0 d22388 u61440

So at the top of the normal zone at 0xef000000 as I read it.

Yours,
Linus Walleij