Re: [PATCH] dma/pool: do not complain if DMA pool is not allocated

Christoph Hellwig
2022-08-11T07:43:54Z

On Wed, Aug 03, 2022 at 05:44:16PM +0200, Michal Hocko wrote:
> Unfortunately generic kernels cannot really know there is any
> crippled device without some code to some checking early boot (and I am
> not even sure this would be sufficient).

But we can know if we need the pool, which is only when AMD SEV is
enabled. So we could add a check and skip allocating all the pools
including the GFP_DMA32 and GFP_KERNEL ones. I can look into that.