Dear list,
I'm trying to set up a Dual Opteron Host system to run several X86_64
Guest UMLs.
I'm using Gentoo 2006.1 amd64 for both the host and the guest kernels.
But: inside some of the X86_64 guests, I should be able to run older
32-bit binaries..
(e.g the gcc 4.1.1 bootstrap code produces a 32-bit binary, tries to
execute it and fails.. ;
also, at least one of the guests will be a virtual workstation (via
VNC), and hence may require some 32-bit binaries..
(e.g. Shockwave Flash inside the browser.. There may be others that
can't be had in source form and that, alas, are needed.)..
I hear OpenOffice won't compile for 64-bit..))
Gentoo 2006.1 in it's 64-bit forms has multi-library features built-in.
both lib32 and lib64 are present.
On the host, I have CONFIG_IA32_EMULATION enabled and I can compile and
execute both 64-bit and 32-bit binaries transparantly.
The .config file, in ARCH=um, however, does not support
CONFIG_IA32_EMULATION, so obviously I can't compile this into the guest
kernel..
if simply refuses to run 32-bit binaries:
--------------------------------------------------
On the host:
$cat > test.c
#include <stdio.h>
int main(int argc, char* argv[])
{
printf("hullo wurld\n");
}
$ cc test.c
$ ./a.out
hullo wurld
$cc -m32 test.c
$ ./a.out
hullo wurld
$ file a.out
a.out: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), for
GNU/Linux 2.6.9, dynamically linked (uses shared libs), for GNU/Linux
2.6.9, not stripped
----------------------------------------------------------------
On the guest:
$cat > test.c
#include <stdio.h>
int main(int argc, char* argv[])
{
printf("hullo wurld\n");
}
$ cc test.c
$ ./a.out
hullo wurld
$cc -m32 test.c
$ ./a.out
-bash: ./a.out: cannot execute binary file
$ file a.out
a.out: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), for
GNU/Linux 2.6.9, dynamically linked (uses shared libs), for GNU/Linux
2.6.9, not stripped
-------------------------------------------
Question 0: Am I forced to run 32-bit kernels and Gentoo for i386 guests
just to be able to run these few non-OSS pieces of software in 32-bit?
Question 1: If Q0=true, are there plans to change that? Can I help?
Question 2: If Q0=true, how do I do that? compiling with SUBARCH=i386
didn't work I still get a 64-bit binary vmlinux executable.. Mean I have
to compile these on a 32-bit machine?
Question 3: If Q0=false, what am I doing wrong?
Prethanks,
Frank The Newbie
Greetings!
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