[Xen-users] Running x86_64, but getting a 32-bit hypervisor

[Eric McClelland <xen-users@xxxxxxxxxx>]

Hello,

I've been running Xen with 32-bit dom0s and domUs for a little over a year now 
(good stuff!), and have just started moving to x86_64.  Starting from an x86_64 
non-Xen Gentoo installation, I've built the necessary packages using Gentoo's 
Portage, but find that the resulting hypervisor is only 32-bit, which I presume 
to be the underlying reason it won't boot the 64-bit dom0.  I'm trying to 
figure out what is preventing me from getting a 64-bit hypervisor.

Interestingly, the xen-syms-3.3.1 file is 64-bit, so I don't think it's a basic 
mistake in my compilation settings:

--------------------
root@Xen1# ls -l xen.gz
lrwxrwxrwx 1 root root 12 May 18 02:30 xen.gz -> xen-3.3.1.gz

root@Xen1# zcat xen.gz | file -
/dev/stdin: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), 
statically linked, stripped

root@Xen1# file xen-syms-3.3.1 
xen-syms-3.3.1: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), statically 
linked, stripped
--------------------

I've been using http://www.gentoo.org/doc/en/xen-guide.xml and 
http://en.gentoo-wiki.com/wiki/Xen as my primary references.  Searching this 
list and Googling haven't yielded promising results so far, although my 
situation sounds very similar (aside from the hardware) to 
http://lists.xensource.com/archives/html/xen-users/2006-08/msg00018.html .  
I've started digging through the temporary working directories used by Gentoo 
during installation, as well as the output from 'emerge' itself (captured with 
'script').  However, my eyes have begun to glaze over.

Various pieces of system information follow - sorry if it's overly verbose.  
I've omitted my xen-sources kernel configuration settings for the moment, since 
I believe the hypervisor compilation to be independent anyway.  Have I simply 
managed to overlook something or to do something stupid?  Any pointers would be 
appreciated.  If I've overlooked a more appropriate mailing list (something 
Gentoo-specific, perhaps?), I apologize.

Gentoo Portage environment:
--------------------
Portage 2.1.6.11 (default/linux/amd64/2008.0, gcc-4.3.2, 
glibc-2.8_p20080602-r1, 2.6.28-gentoo-r5-ericm x86_64)
=================================================================
System uname: 
Linux-2.6.28-gentoo-r5-ericm-x86_64-Intel-R-_Xeon-TM-_CPU_3.00GHz-with-glibc2.2.5
Timestamp of tree: Thu, 07 May 2009 01:45:01 +0000
ccache version 2.4 [enabled]
app-shells/bash:     3.2_p39
dev-lang/python:     2.5.4-r2
dev-util/ccache:     2.4-r7
sys-apps/baselayout: 1.12.11.1
sys-apps/sandbox:    1.6-r2
sys-devel/autoconf:  2.63
sys-devel/automake:  1.9.6-r2, 1.10.2
sys-devel/binutils:  2.18-r3
sys-devel/gcc-config: 1.4.0-r4
sys-devel/libtool:   1.5.26
virtual/os-headers:  2.6.27-r2
ACCEPT_KEYWORDS="amd64"
CBUILD="x86_64-pc-linux-gnu"
CFLAGS="-O2 -march=nocona -pipe"
CHOST="x86_64-pc-linux-gnu"
CONFIG_PROTECT="/etc"
CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/gconf 
/etc/revdep-rebuild /etc/sandbox.d /etc/terminfo /etc/udev/rules.d"
CXXFLAGS="-O2 -march=nocona -pipe"
DISTDIR="/usr/portage/distfiles"
EMERGE_DEFAULT_OPTS="--nospinner --ask" [ I removed "--verbose" for this post.  
--Eric ]
FEATURES="buildpkg ccache collision-protect distlocks fixpackages noclean 
parallel-fetch protect-owned sandbox sfperms strict test test-fail-continue 
unmerge-orphans userfetch userpriv usersandbox"
GENTOO_MIRRORS="ftp://mirror.datapipe.net/gentoo http://distfiles.gentoo.org 
http://www.ibiblio.org/pub/Linux/distributions/gentoo";
LDFLAGS="-Wl,-O1"
MAKEOPTS="-j5"
PKGDIR="/usr/portage/packages"
PORTAGE_CONFIGROOT="/"
PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress 
--force --whole-file --delete --stats --timeout=180 --exclude=/distfiles 
--exclude=/local --exclude=/packages"
PORTAGE_TMPDIR="/var/tmp"
PORTDIR="/usr/portage"
SYNC="rsync://rsync.namerica.gentoo.org/gentoo-portage"
USE="acl amd64 berkdb bzip2 cli cracklib crypt cups dri examples fortran gdbm 
gpm iconv ipv6 isdnlog midi mmx mudflap multilib ncurses nls nptl nptlonly 
openmp pam pcre perl pppd python readline reflection session spl sse sse2 ssl 
sysfs tcpd unicode xorg zlib" ALSA_CARDS="ali5451 als4000 atiixp atiixp-modem 
bt87x ca0106 cmipci emu10k1x ens1370 ens1371 es1938 es1968 fm801 hda-intel 
intel8x0 intel8x0m maestro3 trident usb-audio via82xx via82xx-modem ymfpci" 
ALSA_PCM_PLUGINS="adpcm alaw asym copy dmix dshare dsnoop empty extplug file 
hooks iec958 ioplug ladspa lfloat linear meter mmap_emul mulaw multi null plug 
rate route share shm softvol" APACHE2_MODULES="actions alias auth_basic 
authn_alias authn_anon authn_dbm authn_default authn_file authz_dbm 
authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache 
dav dav_fs dav_lock deflate dir disk_cache env expires ext_filter file_cache 
filter headers include info log_config logio mem_cache mime mime_magic 
negotiation rewrite setenvif speling status unique_id userdir usertrack 
vhost_alias" ELIBC="glibc" INPUT_DEVICES="keyboard mouse evdev" KERNEL="linux" 
LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses 
text" USERLAND="GNU" VIDEO_CARDS="fbdev glint i810 intel mach64 mga neomagic nv 
r128 radeon savage sis tdfx trident vesa vga via vmware voodoo"
Unset:  CPPFLAGS, CTARGET, FFLAGS, INSTALL_MASK, LANG, LC_ALL, LINGUAS, 
PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, 
PORTDIR_OVERLAY

----------

/etc/portage/package.keywords:
app-emulation/xen
app-emulation/xen-tools
sys-kernel/xen-sources

----------

/etc/portage/package.use:
net-analyzer/wireshark threads
app-emulation/xen-tools hvm
--------------------

Installed Xen, Xen-related packages:
--------------------
/var/db/pkg/app-emulation/xen-3.3.1-r1
/var/db/pkg/app-emulation/xen-tools-3.3.1
/var/db/pkg/sys-devel/dev86-0.16.17-r5
/var/db/pkg/sys-kernel/xen-sources-2.6.18-r12
--------------------

Regards,
--Eric

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