Hi,
I am running the QEMU with CXL 2.0 MEM device using QEMU of
QEMU CXL v4 branch. (https://gitlab.com/bwidawsk/qemu/-/tree/cxl-2.0v4/)
I have used following command to launch QEMU:
qemu-system-x86_64 -M q35,nvdimm=on -m 8192M -smp
8,sockets=2,cores=2,threads=2 -hda ubuntu-20.10-64.qcow2 -enable-kvm -usbdevice
tablet -monitor stdio -object
memory-backend-file,id=cxl-mem1,share=on,mem-path=cxl_type_mem,size=512M
-object memory-backend-file,id=cxl-lsa,share=on,mem-path=cxl_lsa_mem,size=2M
-device
pxb-cxl,id=cxl.0,bus=pcie.0,bus_nr=52,uid=0,len-window-base=1,window-base[0]=0x4c0000000,memdev[0]=cxl-mem1
-device cxl-rp,id=rp0,bus=cxl.0,addr=0.0,chassis=0,slot=0 -device
cxl-type3,bus=rp0,memdev=cxl-mem1,id=cxl-pmem0,size=256M,lsa=cxl-lsa
I am not able to see PMEM device(persistent memory) in Guest OS
for 'memory-backened-file' which attached with cxl device(cxl-type3).
For PMEM device to be visible in Guest OS, is it required for
QEMU to populate SRAT/HMAT table with CXL device info?
Thanks,
Raghav
