Re: Error : "cxl_pci 0000:0d:00.0: Failed to get interrupt for event Info log"

[Jonathan Cameron via <qemu-devel@nongnu.org>]

On Thu, 20 Apr 2023 18:07:40 +0530
RAGHU H <raghuhack78@gmail.com> wrote:

> Hello,
> 
> I am using qemu config listed in CXL documentation to emulate CXL device
> 
> 
> -object memory-backend-file,id=cxl-mem1,share=on,mem-path=/tmp/cxltest.raw,size=256M
> \
> -object memory-backend-file,id=cxl-mem2,share=on,mem-path=/tmp/cxltest2.raw,size=256M
> \
> -object memory-backend-file,id=cxl-mem3,share=on,mem-path=/tmp/cxltest3.raw,size=256M
> \
> -object memory-backend-file,id=cxl-mem4,share=on,mem-path=/tmp/cxltest4.raw,size=256M
> \
> -object memory-backend-file,id=cxl-lsa1,share=on,mem-path=/tmp/lsa.raw,size=256M
> \
> -object memory-backend-file,id=cxl-lsa2,share=on,mem-path=/tmp/lsa2.raw,size=256M
> \
> -object memory-backend-file,id=cxl-lsa3,share=on,mem-path=/tmp/lsa3.raw,size=256M
> \
> -object memory-backend-file,id=cxl-lsa4,share=on,mem-path=/tmp/lsa4.raw,size=256M
> \
> -device pxb-cxl,bus_nr=12,bus=pcie.0,id=cxl.1 \
> -device pxb-cxl,bus_nr=222,bus=pcie.0,id=cxl.2 \
> -device cxl-rp,port=0,bus=cxl.1,id=root_port13,chassis=0,slot=2 \
> -device cxl-type3,bus=root_port13,memdev=cxl-mem1,lsa=cxl-lsa1,id=cxl-pmem0 \
> -device cxl-rp,port=1,bus=cxl.1,id=root_port14,chassis=0,slot=3 \
> -device cxl-type3,bus=root_port14,memdev=cxl-mem2,lsa=cxl-lsa2,id=cxl-pmem1 \
> -device cxl-rp,port=0,bus=cxl.2,id=root_port15,chassis=0,slot=5 \
> -device cxl-type3,bus=root_port15,memdev=cxl-mem3,lsa=cxl-lsa3,id=cxl-pmem2 \
> -device cxl-rp,port=1,bus=cxl.2,id=root_port16,chassis=0,slot=6 \
> -device cxl-type3,bus=root_port16,memdev=cxl-mem4,lsa=cxl-lsa4,id=cxl-pmem3 \
> -M cxl-fmw.0.targets.0=cxl.1,cxl-fmw.0.targets.1=cxl.2,cxl-fmw.0.size=4G,cxl-fmw.0.interleave-granularity=8k
> 
> Kernel logs show cxl_pci module error while setting up irq
> (cxl_event_irqsetup in drivers/cxl/pci.c)
> 
> cxl_pci 0000:0d:00.0: Failed to get interrupt for event Info log
> [    3.984800] cxl_pci 0000:e0:00.0: Failed to get interrupt for event Info log
> [    3.984841] cxl_pci 0000:df:00.0: Failed to get interrupt for event Info log
> 
> 
> Is this expected in an emulated environment?

Upstream QEMU? Or a version of my staging tree?

Upstream doesn't support events logs yet, so this may the outcome of that.
It missed the 8.0 cycle due to some problems with other series that I'd
based it on top of.  Hopefully will start to get those resolved shortly
and get as far as events support this cycle.

Thanks,

Jonathan

> 
> Regards
> Raghu