From: Amit Kumar <free.amit.kumar@gmail.com>
To: kipade <kipade@163.com>
Cc: Greg KH <greg@kroah.com>,
Kernel Newbies <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 18:04:52 +0530 [thread overview]
Message-ID: <CAPTh4OvXX2Q=V6ayMB-VpdJwsiKYEYZz1buyuj7Vvc=ebq5fZw@mail.gmail.com> (raw)
In-Reply-To: <0d7792bd-8ba6-b91b-1b29-75b5806b7848@163.com>
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On Mon, Apr 20, 2020, 08:33 kipade <kipade@163.com> wrote:
> 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
> It's simple. As you are mentioning the API, so study that API.
>
I am also trying to learn kernel development, but through reading kernel
documents.
I think a kernel developer should not be fed rather he should eat.
I will suggest you to just take a jump into kernel documentation
directory, you will find yourself wet.
Pardon me, if I have hurt you.
> 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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> Kernelnewbies@kernelnewbies.org
> https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
>
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prev parent reply other threads:[~2020-04-20 12:37 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
2020-04-20 12:34 ` Amit Kumar [this message]
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