[PATCH v2 2/2] treewide: Add the __GFP_PACKED flag to several non-DMA kmalloc() allocations

[Christoph Hellwig]

On Sun, Oct 30, 2022 at 10:02:53AM +0100, Greg Kroah-Hartman wrote:
> Ah, my fault, sorry, you are right.  Is there a sparse tag that just
> means "enforce this void * type?"  I guess we could do that with something
> like:
> 	typedef void *dmaptr;
> 
> but that feels icky.

That's because it is :)  I find the concept of the DMA pointes pretty
strange to be honest.  It only affects a subset of dma (when devices
are not attached in a DMA coherent way).  So count me in as someone
who would be much more happy about figuring out a way to simplify
bounce buffer for non-coherent DMA if the start and length are not
aligned to the cache line size over any kind of special annotation
all over the kernel.