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From: Greg KH <greg@kroah.com>
To: JeongHwan Kim <frog007.kernel.kr@gmail.com>
Cc: kernelnewbies@kernelnewbies.org
Subject: Re: memory mapping from user space to kernel space
Date: Sat, 19 Sep 2020 15:40:00 +0200	[thread overview]
Message-ID: <20200919134000.GB2562161@kroah.com> (raw)
In-Reply-To: <f378bf72-10a4-8190-b71a-2a3da94ec9c7@gmail.com>

On Sat, Sep 19, 2020 at 09:45:33PM +0900, JeongHwan Kim wrote:
> Hi, everyone
> 
> 
> The memory mapping from memory allocated in kernel space to user space is
> possible
> 
> to use mmap, but is it possible to map memory allocated in user space to
> kernel?

It is possible, but very messy and difficult, and strongly discouraged
when ever possible.  What exactly are you trying to do?

thanks,

greg k-h

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      reply	other threads:[~2020-09-19 13:40 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-19 12:45 memory mapping from user space to kernel space JeongHwan Kim
2020-09-19 13:40 ` Greg KH [this message]

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