Messages in this thread | | | Date | Wed, 29 Oct 2014 16:34:38 -0700 | From | Greg Kroah-Hartman <> | Subject | Re: [PATCH 00/12] Add kdbus implementation |
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On Thu, Oct 30, 2014 at 12:26:33AM +0100, Jiri Kosina wrote: > On Thu, 30 Oct 2014, Jiri Kosina wrote: > > > > > It seems to me that most of the highlight features from the cover letter > > > > can be "easily" (for certain definition of that word, of course) > > > > implemented in userspace (vmsplice(), sending fd through unix socket, user > > > > namespaces, UUID management, etc). > > > > > > We have dbus in userspace today, but that requires extra copies of data, > > > > But we can do zero-copy between processess for quite some time already, so > > what exactly is the issue here? > > > > > and isn't easy, or even possible, to do some of the application-specific > > > bus logic that kdbus provides. > > > > I unfortunately have absolutely no idea what should I imagine here. > > Also, I think I have heard that binder is going out of staging now, right?
Yes, but that needs documentation, which I'm working on at the moment :)
> I admittedly have very limited understanding of both binder and kdbus, but > I guess that is the case for many folks. My understanding is that they are > providing very similar functionality, so explanation why we need *both* in > the kernel would be very interesting as well.
They do very different things, see this writeup I did a while ago about the differences between them: http://kroah.com/log/blog/2014/01/15/kdbus-details/
thanks,
greg k-h
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