Re: [PATCH v1] ALSA: memalloc: Fix indefinite hang in non-iommu case

Sven van Ashbrook
2024-02-16T16:22:56Z

On Fri, Feb 16, 2024 at 9:43 AM Takashi Iwai <tiwai@suse.de> wrote:
>
> OK, then how about the one like below?
>
> This changes:
> - Back to __GFP_NORETRY as default
> - Use __GFP_RETRY_MAYFAIL for SNDRV_DMA_TYPE_NONCONTIG with IOMMU;
> this should cover the commit a61c7d88d38c
> - Also use __GFP_RETRY_MAYFAIL for the SG-fallback allocations of the
> minimal order, just like IOMMU allocator does.
>
> This should be less destructive, while still allowing more aggressive
> allocations for SG buffers.

This one looks like it would keep the SOF firmware allocation issue at bay,
in both iommu and non-iommu cases.

If there is no further discussion in this thread, we'll stress test this
on iommu and non-iommu Chromebooks.