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SubjectRe: [PATCH 0/4] dma-pool: Fix atomic pool selection
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Hi,


I have merged this to a 5.8 tree along with "dma-pool: Only allocate
from CMA when in the same memory zone" and tested it in various ACPI/DT
combinations, particularly on the RPI4. It seems to be working fine.

So thanks for your time and effort clearing this up!

Tested-by: Jeremy Linton <jeremy.linton@arm.com>


On 7/9/20 11:19 AM, Nicolas Saenz Julienne wrote:
> This is my attempt at fixing one of the regressions we've seen[1] after
> the introduction of per-zone atomic pools.
>
> This combined with "dma-pool: Do not allocate pool memory from CMA"[2]
> should fix the boot issues on Jeremy's RPi4 setup.
>
> [1] https://lkml.org/lkml/2020/7/2/974
> [2] https://lkml.org/lkml/2020/7/8/1108
>
> ---
>
> Nicolas Saenz Julienne (4):
> dma-direct: Provide function to check physical memory area validity
> dma-pool: Get rid of dma_in_atomic_pool()
> dma-pool: Introduce dma_guess_pool()
> dma-pool: Make sure atomic pool suits device
>
> include/linux/dma-direct.h | 1 +
> kernel/dma/direct.c | 2 +-
> kernel/dma/pool.c | 76 +++++++++++++++++++++++++++-----------
> 3 files changed, 56 insertions(+), 23 deletions(-)
>

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