Yuquan Wang wrote: > Changes in v3: > - Introduce numa_add_reserved_memblk() > - Use more explicit way to make sure CFMWs fake node >= 1 > - Replace numa_add_memblk() with numa_add_reserved_memblk() in acpi_parse_cfmws() > > Problem > ------- > The absence of SRAT Can you say more about CXL ACPI platforms that do not have an SRAT? That seems like the first problem, and this information helps determine whether this is a fix that needs backporting, or just a cleaner way to handle this quirk. > would cause the fake_pxm to be -1 and increment Not an issue in your patch but it strikes me that "fake_pxm" is misnamed. There is nothing "fake" about it. It is simply the first synthesized CXL proximity domain for future CXL region provisioning. I would not mind a separate patch renaming "fake_pxm" to "cxl_pxm", just to not confuse future readers with the simulated nodes produced by mm/numa_emulation.c.
