Dan Williams wrote: > Mike Rapoport wrote: > > From: "Mike Rapoport (Microsoft)" <rppt@xxxxxxxxxx> > > > > Hi, > > > > Following the discussion about handling of CXL fixed memory windows on > > arm64 [1] I decided to bite the bullet and move numa_memblks from x86 to > > the generic code so they will be available on arm64/riscv and maybe on > > loongarch sometime later. > > > > While it could be possible to use memblock to describe CXL memory windows, > > it currently lacks notion of unpopulated memory ranges and numa_memblks > > does implement this. > > > > Another reason to make numa_memblks generic is that both arch_numa (arm64 > > and riscv) and loongarch use trimmed copy of x86 code although there is no > > fundamental reason why the same code cannot be used on all these platforms. > > Having numa_memblks in mm/ will make it's interaction with ACPI and FDT > > more consistent and I believe will reduce maintenance burden. > > > > And with generic numa_memblks it is (almost) straightforward to enable NUMA > > emulation on arm64 and riscv. > > Hey Mike, > > So interesting to see this come full circle and instead of moving > numa_memblks to memblock, just uplevel numa_memblks. From the > perspective of having numa_memblks enhancements work for more > architectures this gets an enthusiastic thumbs up from me. Let me go > look at the details... For the series you can add: Acked-by: Dan Williams <dan.j.williams@xxxxxxxxx>
