UIO Devices and user processes

[Kenneth Adam Miller]

No, I didn't try it. I just wanted to ask before I got started. Thanks that
answers everything.

Any body know about the issue of assigning a process a region of physical
memory to use for it's malloc and free? I'd like to just have the process
call through to a UIO driver with an ioctl, and then once that's done it
gets all it's memory from a specific region.

On Tue, Oct 6, 2015 at 1:21 AM, Greg KH <greg at kroah.com> wrote:

> On Mon, Oct 05, 2015 at 07:07:51PM -0400, Kenneth Adam Miller wrote:
> > So, I'm reading about UIO devices and user processes for mapping memory
> into
> > userland, and basically I have just a couple questions:
> >
> > What happens when a userland processes has allocated some resource from a
> > driver that is facilitating UIO, but then subsequently crashes? I'd like
> to
> > know that the driver can (or how you would enable such) recover the
> resources
> > so that the next user process can acquire them, instead of them being
> lost.
>
> Have you tried this?  All of your resources should be freed properly, if
> not, let the uio maintainers know.
>
> thanks,
>
> greg k-h
>
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