From: Ira Weiny <ira.weiny@intel.com>
To: Davidlohr Bueso <dave@stgolabs.net>, LiuLele <liu.lele@qq.com>
Cc: <dave.jiang@intel.com>, <Jonathan.Cameron@huawei.com>,
<alison.schofield@intel.com>, <bhelgaas@google.com>,
<bwidawsk@kernel.org>, <dan.j.williams@intel.com>,
<helgaas@kernel.org>, <ira.weiny@intel.com>,
<linux-acpi@vger.kernel.org>, <linux-cxl@vger.kernel.org>,
<linux-kernel@vger.kernel.org>, <linux-pci@vger.kernel.org>,
<rostedt@goodmis.org>, <vishal.l.verma@intel.com>
Subject: Re: CXL memory device not created correctly
Date: Fri, 19 May 2023 08:20:44 -0700 [thread overview]
Message-ID: <646793cc665bf_1231462943c@iweiny-mobl.notmuch> (raw)
In-Reply-To: <gbsxrcjtnf67jxpqmbn57nqoslpmjtuk2ycatmau3vfsmpvbrd@c2umpofn2hti>
Davidlohr Bueso wrote:
> 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.
I had to double check. Events are mandatory on devices. On checking
again interrupt support is mandatory as well. So that is why I errored
out here. With real HW this should not be an issue.
> Regardless, the actual qemu support is in Jonathan's tree:
>
> https://gitlab.com/jic23/qemu/-/commit/a04e6476df363d1f6bc160577b30dda6564d3f67
That is the commit you need but it is probably best to use one of
Jonathans 'official' branches. Looks like he just pushed a new one today.
https://gitlab.com/jic23/qemu/-/tree/cxl-2023-05-19
I've not run that one yet. So if you have issues try his previous one it
is working well for me.
https://gitlab.com/jic23/qemu/-/tree/cxl-2023-04-19
Ira
>
> Thanks,
> Davidlohr
next prev parent reply other threads:[~2023-05-19 15:21 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-18 5:53 [PATCH v7 0/8] cxl: Process event logs Ira Weiny
2023-01-18 5:53 ` [PATCH v7 1/8] cxl/mem: Read, trace, and clear events on driver load Ira Weiny
2023-01-26 21:53 ` Dan Williams
2023-01-27 0:49 ` Dan Williams
2023-01-27 19:45 ` Ira Weiny
2023-05-05 9:47 ` Huai-Cheng
2023-05-08 2:41 ` Ira Weiny
2023-05-09 21:41 ` Dave Jiang
2023-01-18 5:53 ` [PATCH v7 2/8] cxl/mem: Wire up event interrupts ira.weiny
2023-01-26 22:00 ` Dan Williams
2023-05-09 21:42 ` Dave Jiang
[not found] ` <tencent_D9D9D358330CA573E23D490C6EE13E0DC105@qq.com>
2023-05-19 1:38 ` CXL memory device not created correctly Davidlohr Bueso
2023-05-19 15:10 ` Jonathan Cameron
2023-05-19 15:20 ` Ira Weiny [this message]
2023-05-19 15:37 ` Jonathan Cameron
2023-05-31 2:18 ` Luis Chamberlain
2023-06-01 3:12 ` Ira Weiny
2023-06-01 3:46 ` Davidlohr Bueso
2023-01-18 5:53 ` [PATCH v7 3/8] cxl/mem: Trace General Media Event Record Ira Weiny
2023-05-09 21:47 ` Dave Jiang
2023-01-18 5:53 ` [PATCH v7 4/8] cxl/mem: Trace DRAM " Ira Weiny
2023-05-09 21:48 ` Dave Jiang
2023-01-18 5:53 ` [PATCH v7 5/8] cxl/mem: Trace Memory Module " Ira Weiny
2023-05-09 21:52 ` Dave Jiang
2023-01-18 5:53 ` [PATCH v7 6/8] cxl/test: Add generic mock events Ira Weiny
2023-05-09 22:03 ` Dave Jiang
2023-01-18 5:53 ` [PATCH v7 7/8] cxl/test: Add specific events Ira Weiny
2023-05-09 22:08 ` Dave Jiang
2023-01-18 5:53 ` [PATCH v7 8/8] cxl/test: Simulate event log overflow Ira Weiny
2023-05-09 22:31 ` Dave Jiang
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