80ca86

Using cxl to simulate pmem in qemu, the writing speed is very slow, only 300k/s

2

environment：qemu-8.1.1,host OS: CentOS7.2, guest OS: CentOS8 with linux kernel 6.5, ndctl-78 execute on the host: modprobe brd rd_nr=1 rd_size=16777216 max_part=0 mke2fs /dev/ram0 mount /dev/ram0 /tmp/pmem0 dd if=/dev/zero of=/tmp/pmem0/cxltest.raw bs=1M count=512...