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From: "Liu, Jingqi" <jingqi.liu@intel.com>
To: Joao Martins <joao.m.martins@oracle.com>,
	Paolo Bonzini <pbonzini@redhat.com>,
	Dan Williams <dan.j.williams@intel.com>
Cc: qemu-devel@nongnu.org, Richard Henderson <rth@twiddle.net>
Subject: Re: [PATCH] exec: fetch the alignment of Linux devdax pmem character device nodes
Date: Wed, 8 Apr 2020 09:16:02 +0800	[thread overview]
Message-ID: <6b809ac5-1251-c80e-bbf6-82aa47333c1b@intel.com> (raw)
In-Reply-To: <7de3eccb-f0b4-a858-2fc4-addfc7b198aa@oracle.com>

On 4/7/2020 11:51 PM, Joao Martins wrote:
> On 4/7/20 3:31 PM, Paolo Bonzini wrote:
>> On 07/04/20 12:59, Joao Martins wrote:
>>> Perhaps, you meant instead:
>>>
>>> 	/sys/dev/char/%d:%d/align
>>>
>>>   ?
>>>
Hi Joao,

In my machine with real NVDIMM, the devdax device is as follows:

$ ll /dev/dax0.0
crw------- 1 root root 250, 6 3月  25 15:16 /dev/dax0.0

$ ls /sys/dev/char/250\:6/align
ls: cannot access '/sys/dev/char/250:6/align': No such file or directory

$ ls /sys/dev/char/250\:6/device/align

/sys/dev/char/250:6/device/align

So:
The file of "/sys/dev/char/%d:%d/align" does not exist.
It should be "/sys/dev/char/%d:%d/device/align".

Anyone has a real NVDIMM can help double check. Thanks.

Hi Dan,

You may have a real NVDIMM, in what directory is the 'align' file ?

Thanks,

Jingqi

>> So it works with that change?
> Yeah.
>
> 	Joao


  reply	other threads:[~2020-04-08  1:17 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-04-01  3:13 [PATCH] exec: fetch the alignment of Linux devdax pmem character device nodes Jingqi Liu
2020-04-07  7:29 ` Liu, Jingqi
2020-04-07  8:08   ` Paolo Bonzini
2020-04-07  8:16     ` Dan Williams
2020-04-07 11:42       ` Joao Martins
2020-04-07  8:39     ` Liu, Jingqi
2020-04-07 10:59 ` Joao Martins
2020-04-07 14:31   ` Paolo Bonzini
2020-04-07 15:51     ` Joao Martins
2020-04-08  1:16       ` Liu, Jingqi [this message]
2020-04-08  9:28         ` Joao Martins
2020-04-07 16:55   ` Dan Williams
2020-04-07 18:28     ` Joao Martins
2020-04-07 18:29       ` Paolo Bonzini
2020-04-08  2:25       ` Liu, Jingqi
2020-04-08  9:42         ` Joao Martins
2020-04-09 14:33           ` Liu, Jingqi
2020-04-09 16:46             ` Dan Williams
2020-04-09 17:02               ` Paolo Bonzini
2020-04-10  1:48               ` Liu, Jingqi

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