On Sun, Aug 11, 2024 at 10:09:35AM +0300, Baruch Siach wrote: > From: Catalin Marinas <catalin.marinas@xxxxxxx> > > Hardware DMA limit might not be power of 2. When RAM range starts above > 0, say 4GB, DMA limit of 30 bits should end at 5GB. A single high bit > can not encode this limit. > > Use plain address for DMA zone limit. > > Since DMA zone can now potentially span beyond 4GB physical limit of > DMA32, make sure to use DMA zone for GFP_DMA32 allocations in that case. > > Signed-off-by: Catalin Marinas <catalin.marinas@xxxxxxx> > Co-developed-by: Baruch Siach <baruch@xxxxxxxxxx> > Signed-off-by: Baruch Siach <baruch@xxxxxxxxxx> You might want to say that no functional change is expected with this patch. The patch looks fine. Reviewed-by: Catalin Marinas <catalin.marinas@xxxxxxx>
