Messages in this thread |  | | | Date | Fri, 3 Jun 2005 07:18:21 +0200 | | From | Ingo Molnar <> | | Subject | Re: RT patch breaks X86_64 build |
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* 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.
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