CXL2.0 Type3 Persistent Memory Support

[Neenu Koomullil Joseph]

Hello Experts,

 

I’m trying to run CXL2.0  Type 3 device on Qemu 7.1.0 but not able to see persistent memory device(PMEM) in the OS.

 

Is PMEM CXL2.0 supported in Qemu 7.1.0? If not, which version has the support?

 

This is the command I’m running:

qemu-system-x86_64 -M q35,nvdimm=on,cxl=on -m 8192M -smp 8 -drive file=$PATH/ubuntu_22_vm.qcow2

-object memory-backend-file,id=cxl-mem1,share=on,mem-path=cxl_type_mem,size=512M

-object memory-backend-file,id=cxl-lsa1,share=on,mem-path=cxl_lsa_mem,size=2M

-device pxb-cxl,bus_nr=12,bus=pcie.0,id=cxl.1 -device cxl-rp,port=0,bus=cxl.1,id=root_port13,chassis=0,slot=2

-device cxl-type3,bus=root_port13,memdev=cxl-mem1,id=cxl-pmem0,lsa=cxl-lsa1

-M cxl-fmw.0.targets.0=cxl.1,cxl-fmw.0.size=1G  

 

Thanks,

Neenu Joseph