lkml.org 
[lkml]   [2005]   [Jun]   [3]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: RT patch breaks X86_64 build

* Michal Schmidt <xschmi00@stud.feec.vutbr.cz> wrote:

> Ingo Molnar wrote:
> >hm, one difference is that i'm running a 64-bit kernel but 32-bit
> >userspace (FC3-ish).
>
> Yes, that's it! I've just successfully booted into 32-bit userspace (I
> have a separate partition with old 32-bit Debian) with x86_64 kernel and
> LATENCY_TRACE enabled. Everything seemed to work.
> Then I mounted my normal root partition under /mnt/64 and tried
> chroot /mnt/64
> I got a SIGSEGV. Then I copied some simple binaries from /mnt/64/bin to
> /root/test/bin and some necessary libraries to /root/test/lib and did
> chroot /root/test
> I could run 64-bit sash, ls, cat, date, mkdir - it worked. 64-bit bash
> however segfaulted.

perhaps my mcount stubs dont save enough registers, leading to register
corruption on 64-bit userspace? In that case i'd expect more breakage
though, so maybe it's something more subtle.

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: 2005-06-03 07:23    [from the cache]
©2003-2011 Jasper Spaans