Re: [PATCH stable v5.10 0/7] arm64: Default to 32-bit wide ZONE_DMA

On Wed, Jun 23, 2021 at 02:59:59PM +0800, Kefeng Wang wrote:

Hi Greg,

There are two more patches about the ZONE_DMA[32] changes,

What ZONE_DMA changes?

especially the second one, both them need be backported, thanks.

Backported to where?

791ab8b2e3db - arm64: Ignore any DMA offsets in the max_zone_phys() calculation 2687275a5843 - arm64: Force NO_BLOCK_MAPPINGS if crashkernel reservation is required

Have you tried these patches? Where do they need to be applied to?

confused,

greg k-h