On 06.07.23 10:50, Aneesh Kumar K.V wrote:
Some architectures like ppc64 wants to enable this feature only with radix translation and their vemmap mappings have different alignment requirements. Add overrider for mhp_supports_memmap_on_memory() and also use altmap.reserve feature to adjust the pageblock alignment requirement. The patch also fallback to allocation of memmap outside memblock if the alignment rules are not met for memmap on memory allocation. This allows to use the feature more widely allocating memmap as much as possible within the memory block getting added. A follow patch to enable memmap on memory for ppc64 will use this.
See my other reply. Rather have another arch check then overriding it completely.
-- Cheers, David / dhildenb
