lkml.org 
[lkml]   [2005]   [Aug]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: Bugs on your remap_file_pages protections implementations

* Blaisorblade <blaisorblade@yahoo.it> wrote:

> Hi Ingo, I'm the young UML hacker you met at OLS and who got your UML
> patches sent ;-)
>
> I've been studying your patch (and the whole Linux VM, indeed) in the
> past days, and I have some remarks, about the version of the code in
> 2.6.4-rc2-mm1 (which is the same you sent me) - I've now downloaded
> the version dropped from 2.6.5-mm1, but it doesn't seem to address
> those problems.
>
> Btw, I've now seen why that patch was dropped, but not why it wasn't
> resubmit.

was not resubmitted due to me only having 30 hours available to hack,
per day ;) Feel free to pick the patch up.

> *) with your patch, remapped pages without MAP_INHERIT are IMHO not
> safe across swapout; re-swapping them in will pass through the
> arch-specific fault handler, which will check VMA's protections, and
> fail if the VMA originally had MAP_NONE. Or am I missing something?

not sure, was a long time ago. I have checked swap-safeness, but only
once. UML did work though, but i dont think i ever pushed it into
swapping out its RAM-file.

Ingo
-
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/

\
 
 \ /
  Last update: 2005-08-05 10:17    [W:0.042 / U:0.392 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site