On Thu, 1 Aug 2024 09:08:00 +0300 Mike Rapoport <rppt@xxxxxxxxxx> 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. Tested-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx> #arm64 + CXL via QEMU With that one fix in patch 7. Feel free to figure out which patches actually got tested by that (or tag them all - I'll pretend I tested ip27 :) Jonathan
