Hi Linus, Am Mittwoch, 4. September 2024, 08:36:46 CEST schrieb Linus Walleij: > On Wed, Sep 4, 2024 at 8:09 AM Alexander Stein > <alexander.stein@xxxxxxxxxxxxxxx> 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@18000000, compatible id shared-dma-pool > OF: reserved mem: 0x18000000..0x187fffff (8192 KiB) nomap non-reusable > vram@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. Okay, so it is the same as for me. It seems you don't have any HighMem. On a different model having more memory there is also HighMem available: [ 0.000000] Zone ranges: [ 0.000000] Normal [mem 0x0000000010000000-0x000000003fffffff] [ 0.000000] HighMem [mem 0x0000000040000000-0x000000004fffffff] If I explicitly configure CMA in HighMem I don't have any issues. But the 512MiB models don't have enough memory for fixed allocation in HighMem. I was about to send a revert myself as I didn't get any feedback yet. Best regards, Alexander -- TQ-Systems GmbH | Mühlstraße 2, Gut Delling | 82229 Seefeld, Germany Amtsgericht München, HRB 105018 Geschäftsführer: Detlef Schneider, Rüdiger Stahl, Stefan Schneider http://www.tq-group.com/
