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Message-ID: <gbsxrcjtnf67jxpqmbn57nqoslpmjtuk2ycatmau3vfsmpvbrd@c2umpofn2hti>
Date:   Thu, 18 May 2023 18:38:46 -0700
From:   Davidlohr Bueso <dave@...olabs.net>
To:     LiuLele <liu.lele@...com>
Cc:     dave.jiang@...el.com, Jonathan.Cameron@...wei.com,
        alison.schofield@...el.com, bhelgaas@...gle.com,
        bwidawsk@...nel.org, dan.j.williams@...el.com, helgaas@...nel.org,
        ira.weiny@...el.com, linux-acpi@...r.kernel.org,
        linux-cxl@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-pci@...r.kernel.org, rostedt@...dmis.org,
        vishal.l.verma@...el.com
Subject: Re: CXL memory device not created correctly

On Fri, 19 May 2023, LiuLele wrote:

>In my testing CXL device /sys/bus/cxl/devices/mem0  not created, and the get error messages :
>
>```
>cxl_pci 0000:0d:00.0: Failed to get interrupt for event Info log
>```
>
>My test environment is a qemu CXL emulator with qemu v8.0.0, Linux kernel v6.3.0.
>While with kernel 5.9.13,  /sys/bus/cxl/devices/mem0  can be created.

Yes, this can be annoying and would argue the probe should not error out.
Regardless, the actual qemu support is in Jonathan's tree:

https://gitlab.com/jic23/qemu/-/commit/a04e6476df363d1f6bc160577b30dda6564d3f67

Thanks,
Davidlohr

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