On Fri, Mar 07, 2025 at 10:20:31AM +0800, Yuquan Wang wrote: > > 2a) Is the BIOS programming decoders, or are you programming the > > decoder after boot? > Program the decoder after boot. It seems like currently bios for qemu could > not programm cxl both on x86(q35) and arm64(virt). I am trying to find a > cxl-enable bios for qemu virt to do some test. What's likely happening here then is that QEMU is not emitting an SRAT (either because the logic is missing or by design).