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From: kipade <kipade@163.com>
To: Greg KH <greg@kroah.com>
Cc: kernelnewbies@kernelnewbies.org
Subject: Re: Was there a way to bind a shared memory object onto a fixed physical memory address?
Date: Mon, 20 Apr 2020 11:02:47 +0800	[thread overview]
Message-ID: <0d7792bd-8ba6-b91b-1b29-75b5806b7848@163.com> (raw)
In-Reply-To: <20200402121943.GB2773800@kroah.com>

Im sorry that my there were something wrong about my notebook for a half 
of month.

Here, I want to use system shared memory API to share data across 
processes, but I want it use a specified

range of memory knowned by a slave core such as DSP, etc. If I can do?

thanks.


On 2020/4/2 下午8:19, Greg KH wrote:
> On Thu, Apr 02, 2020 at 05:38:31PM +0800, kipade wrote:
>> As the topic, I want to specify a fixed physical memory space to a shared memory object, which can use
>> shm_XXX api to access the memory. Of course I do not want to use mmap api to map /dev/mem device
>> memory into user program.
> Step back and tell us exactly what problem you have, that you have come
> up to this type of solution being necessary?  What do you think you can
> solve by doing this?
>
> thanks,
>
> greg k-h


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  reply	other threads:[~2020-04-20  3:03 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-04-02  9:38 Was there a way to bind a shared memory object onto a fixed physical memory address? kipade
2020-04-02 12:19 ` Greg KH
2020-04-20  3:02   ` kipade [this message]
2020-04-20 12:34     ` Amit Kumar

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