Messages in this thread | | | From | Toralf Förster <> | Subject | Re: UML kernel failed to start betvee 2.6.8-rc8 and current git sources | Date | Fri, 11 Jul 2008 10:43:32 +0200 |
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At Thursday 10 July 2008 21:30:19 Jeff Dike wrote : > On Thu, Jul 10, 2008 at 08:09:59PM +0200, Toralf Förster wrote: > > At Thursday 10 July 2008 18:35:15 Jeff Dike wrote : > > > > > What's the host? > > > > tfoerste@n22 ~ $ uname -a > > Linux n22 2.6.25-gentoo-r6 #4 Thu Jul 10 19:49:36 CEST 2008 i686 Intel(R) Pentium(R) M processor 1700MHz GenuineIntel GNU/Linux > > > > BTW, this works fine and shows only the config : > > n22 ~ # linux-v2.6.26-rc8-227 --showconfig > > > > whereas this failed: > > > > n22 ~ # linux-v2.6.26-rc9-56 --showconfig > > Locating the bottom of the address space ... 0x0 > > Locating the top of the address space ... 0xc0000000 > > OK, I believe you're seeing the same bug as Uli saw here: > > http://marc.info/?l=linux-kernel&m=121011518003727&w=2 > > More precise symptoms are here: > > http://marc.info/?l=linux-kernel&m=121011722806093&w=2 > > I never did figure that one out. I had the same kernel version, same > toolchain, same everything as far as I could see, and I couldn't > reproduce it, except with a binary that he gave me. > > You're seeing it on i386, whereas he saw it on x86_64. > > The underlying problem is that somehow the UML initcalls aren't being > run, which is why you're seeing all zeros in the register dump. > > If you bisect this, I bet you end up at the no-unit-at-a-time patch > that he ended up at. And I have no idea what that has to do with > anything. > You're right :
tfoerste@n22 ~/devel/linux-2.6 $ git bisect good 4f81c5350b44bcc501ab6f8a089b16d064b4d2f6 is first bad commit commit 4f81c5350b44bcc501ab6f8a089b16d064b4d2f6 Author: Jeff Dike <jdike@addtoit.com> Date: Mon Jul 7 13:36:56 2008 -0400
[UML] fix gcc ICEs and unresolved externs
There are various constraints on the use of unit-at-a-time: - i386 uses no-unit-at-a-time for pre-4.0 (not 4.3) - x86_64 uses unit-at-a-time always
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-- MfG/Sincerely
Toralf Förster pgp finger print: 7B1A 07F4 EC82 0F90 D4C2 8936 872A E508 7DB6 9DA3 [unhandled content-type:application/pgp-signature] | |