From: Dave Jiang <dave.jiang@intel.com>
To: "Cao, Quanquan/曹 全全" <caoqq@fujitsu.com>,
linux-cxl@vger.kernel.org, nvdimm@lists.linux.dev
Cc: <vishal.l.verma@intel.com>, <alison.schofield@intel.com>
Subject: Re: [NDCTL PATCH v2 2/2] cxl: Add check for regions before disabling memdev
Date: Thu, 30 Nov 2023 09:07:30 -0700 [thread overview]
Message-ID: <b6867e77-d751-4d09-93e4-59c026e09c6b@intel.com> (raw)
In-Reply-To: <766e7de9-8f08-73f2-fc7f-253930f95625@fujitsu.com>
On 11/30/23 01:29, Cao, Quanquan/曹 全全 wrote:
>
>> static int action_disable(struct cxl_memdev *memdev, struct action_context *actx)
>> {
>> + struct cxl_endpoint *ep;
>> + struct cxl_port *port;
>> +
>> if (!cxl_memdev_is_enabled(memdev))
>> return 0;
>> - if (!param.force) {
>> - /* TODO: actually detect rather than assume active */
>> + ep = cxl_memdev_get_endpoint(memdev);
>> + if (!ep)
>> + return -ENODEV;
>> +
>> + port = cxl_endpoint_get_port(ep);
>> + if (!port)
>> + return -ENODEV;
>> +
>> + if (cxl_port_decoders_committed(port)) {
>> log_err(&ml, "%s is part of an active region\n",
>> cxl_memdev_get_devname(memdev));
>> - return -EBUSY;
>> + if (!param.force)
>> + return -EBUSY;
>> }
>> return cxl_memdev_disable_invalidate(memdev);
>>
>>
> Hi Dave,
> Do you think adding one more prompt message would be more user-friendly?
Yes good idea. I'll add.
>
> code:
> if (cxl_port_decoders_committed(port)) {
> log_err(&ml, "%s is part of an active region\n",
> cxl_memdev_get_devname(memdev));
> if (!param.force)
> return -EBUSY;
> else
> log_err(&ml,"Forcing memdev disable with an active region\n");
> }
>
> output:
> [root@fedora-37-client ndctl]# cxl disable-memdev mem0 -f
> cxl memdev: action_disable: mem0 is part of an active region
> cxl memdev: action_disable: Forcing memdev disable with an active region
> cxl memdev: cmd_disable_memdev: disabled 1 mem
>
next prev parent reply other threads:[~2023-11-30 16:08 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-28 20:43 [NDCTL PATCH v2 1/2] cxl: Save the number of decoders committed to a port Dave Jiang
2023-11-28 20:43 ` [NDCTL PATCH v2 2/2] cxl: Add check for regions before disabling memdev Dave Jiang
2023-11-30 1:41 ` Cao, Quanquan/曹 全全
2023-11-30 8:29 ` Cao, Quanquan/曹 全全
2023-11-30 16:07 ` Dave Jiang [this message]
2023-11-30 21:51 ` [NDCTL PATCH v3 " Dave Jiang
2024-04-17 6:46 ` Yao Xingtao
2024-04-17 18:14 ` Verma, Vishal L
2024-04-22 7:26 ` Re: Xingtao Yao (Fujitsu)
2024-04-25 5:30 ` [NDCTL PATCH v3 2/2] cxl: Add check for regions before disabling memdev Zhijian Li (Fujitsu)
2024-04-25 16:52 ` Alison Schofield
2024-04-26 1:57 ` Zhijian Li (Fujitsu)
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