[Qemu-devel] Re: QEMU regressions ...

[Fabrice Bellard]

It seems that the page table is remapped at an invalid address:

IN:
0x00100026:  movl   $0x30101000,%eax
0x0010002b:  movl   %eax,%cr3

I think more patches are needed to remap this kernel to a right address. 
BUT...

If you take my latest patches, you can use with QEMU any _unpatched_ 
linux kernel now :-)

Fabrice.

Herbert Poetzl wrote:
> On Sun, Oct 26, 2003 at 11:05:09PM +0100, Fabrice Bellard wrote:
>
> > Hi,
> >
> > In the CVS version 'vl' was renamed to 'qemu'. Make install should 
> > install it. I will document all that as soon as the release is made (I 
> > cannot tell when - I need more time to work on it).
>
>
> hmm, okay obviously my fault, now 'qemu' binary seems to
> work, but the redhat kernel still segfaults/coredumps
> this is 2.4.18-27.7.x and I'm not able to get more than
>
> # qemu-cvs-26.10.2003/i386/qemu -nographic -m 128 -snapshot -hda IMGs/TEST_32M.img -hdb 
> IMGs/TEST_256M.img -kernel /usr/src/ALEXEY/kernel-2.4.18-27.7.x-P1/arch/i386/boot/bzImage 
> -append "rw root=/dev/hda1"
> warning: could not open /dev/net/tun: no virtual network emulation
> Segmentation fault (core dumped)
>
> works with vanilla 2.4.20,21,22,23-pre8
> any hints for that one?
>
> TIA,
> Herbert
>
>
>
> > Fabrice.
> >
> > Herbert Poetzl wrote:
> >
> > > Hi Fabrice!
> > >
> > > I'm using QEMU to do kernel development, and because
> > > one of the older redhat kernels, continuously core
> > > dups qemu, I thought, I'll check the cvs version ...
> > >
> > > the checkconfig works well, but then the trouble starts ...
> > >
> > > texi2html -monolithic -number qemu-doc.texi
> > > make: texi2html: Command not found
> > >
> > > I don't use texi2html, and I don't want the docu to
> > > be built, so I replace the command with a noop
> > > (actually touch qemu-doc.html)
> > >
> > > this seems to do the trick, as the compile runs, and
> > > completes without too many warnings ...
> > >
> > > then I wanted to test the vl command, but instead I 
> > > discovered that same command wasn't built ...
> > >
> > > I tried make vl, and ideed, something happened:
> > >
> > > gcc -Wall -O2 -g  -g  vl.c   -o vl
> > > vl.c:47:17: cpu.h: No such file or directory
> > > In file included from vl.c:49:
> > > thunk.h:24:20: config.h: No such file or directory
> > > make: *** [vl] Error 1
> > >
> > > did you abandon the vl utility? is there any 'good'
> > > reason for not using it? please advise ...
> > >
> > > TIA,
> > > Herbert