Messages in this thread | | | Date | Wed, 14 Jun 2006 01:45:51 +0200 (CEST) | From | Paolo Giarrusso <> | Subject | Re: [UML] Problems building and running 2.6.17-rc4 on x86-64 |
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Jeff Dike <jdike@addtoit.com> ha scritto:
> On Tue, Jun 13, 2006 at 11:57:18AM -0300, Alberto Bertogli wrote: > > I just wanted to report that this went away when trying > 2.6.17-rc6 as a > > host. It also works fine as a guest (after I patch it with > > > http://user-mode-linux.sourceforge.net/work/current/2.6/2.6.17-rc4/patches/jmpbuf > > so that it builds).
> > Besides, the random segfault problems I had with previous guests > > versions also seem to be fixed.
> These two problems are related, and were both on the host. Bodo > Stroesser reported a while ago that ptrace, by returning via sysret > rather than iret, could cause register corruption when tracing > sigreturn.
> The UML crash seems to have been caused by the fix to that problem.
If that problem has been fixed, this would imply that SKAS should work on x86-64... or not? Well, I remember that problem being on IA32 emulation and IA32 wasn't included in the patch (for what I can see). Can you ask more information about this? Also, could you verify if at least with noprocmm and a host SKAS-V9 it works? Two things are to check: * Uml64 should use /proc/mm64 (unimplemented) * Uml64 should use the right version of PTRACE_FAULTINFO (I don't remember what I did, if I introduced PTRACE_EX_FAULTINFO or if I directly added the missing trap_no field in PTRACE_FAULTINFO; please verify).
I won't have the time to check this at least until the 22 June.
Bye
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