lkml.org 
[lkml]   [2013]   [Nov]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
SubjectRe: Partially Privileged Applications
From
On Sun, Nov 10, 2013 at 4:03 PM, Shahbaz Youssefi <shabbyx@gmail.com> wrote:
> Dear all,
>
> First, please CC replies to myself. Second, this is an RFC.
>
> I've been tampering with an idea for some time now and I've done some
> research. Finally, I wrote it down here (a terrible place as it turned
> out):
>
> http://shahbaz-youssefi.blogspot.it/2013/11/partially-privileged-applications.html
>
> and would like to know what you think. This idea requires an
> improvement to the CPU architectures to allow unifying kernel and user
> spaces and perform privileged instructions based on the location of
> the instruction rather than a manually switched mode (or via traps).
>
> Please, do take a look at the link. I'm far from a kernel expert so
> the idea may not be as rainbows and unicorns as it seems to me right
> now. But it also may be. In that case, probably we need a push by
> well-known people (i.e., Linus) to get the manufacturers to implement
> the feature.
>
> At least from a developer's point of view, with this idea you could
> gdb or even valgrind check the drivers in the very least with much
> less chance of a kernel oops. How faster can you imagine debugging a
> kernel module?

So, we throw away 20 years of OS development and go back to hacky call
gates? ;-)

> Thanks,
> An unfortunate soul who has to deal with buggy kernel modules
> --
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at http://www.tux.org/lkml/



--
Thanks,
//richard


\
 
 \ /
  Last update: 2013-11-10 17:41    [W:0.093 / U:0.040 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site