On 10.08.23 12:59, Philippe Mathieu-Daudé wrote:
Hi,
Cc'ing Igor and David.
On 9/8/23 00:51, Maverickk 78 wrote:
Hello,
I am running qemu-system-x86_64
qemu-system-x86_64 --version
QEMU emulator version 8.0.92 (v8.1.0-rc2-80-g0450cf0897)
qemu-system-x86_64 \
-m 2G,slots=4,maxmem=4G \
-smp 4 \
-machine type=q35,accel=kvm,cxl=on \
-enable-kvm \
-nographic \
-device pxb-cxl,id=cxl.0,bus=pcie.0,bus_nr=52 \
-device cxl-rp,id=rp0,bus=cxl.0,chassis=0,port=0,slot=0 \
-object memory-backend-file,id=mem0,mem-path=/tmp/mem0,size=1G,share=true \
-device cxl-type3,bus=rp0,volatile-memdev=mem0,id=cxl-mem0 \
-M cxl-fmw.0.targets.0=cxl.0,cxl-fmw.0.size=1G
I was expecting the CXL memory to be listed in "System Ram", the lsmem
shows only 2G memory which is System RAM, it's not listing the CXL
memory.
We are talking about the memory via inside the guest, right?
In the guest, that memory most probably has to be added as "System RAM"
explicitly using the dax/kmem driver.
https://lwn.net/Articles/922944/
Contains some details on how to use "daxctl reconfigure-device".
--
Cheers,
David / dhildenb
