32 bit s2disk on 64 bit kernel

[Brad Campbell <brad@wasp.net.au>]

<oops, sent this to the wrong list..>

I run an entirely 32 bit userspace on a 64bit kernel. I've compiled suspend-utils from todays git 
tree. trying to use s2disk results in the following :

Is this a supported configuration?

brad@bklaptop:~$ sudo s2disk
s2disk: Could not use the resume device (try swapon -a). Reason: Invalid argument
brad@bklaptop:~$ dmesg | tail -n3
[  823.530812] video LNXVIDEO:00: Restoring backlight state
[  834.100071] iwlagn 0000:02:00.0: iwlagn_tx_agg_start on ra = 00:26:f2:94:ba:59 tid = 0
[  842.392066] iwlagn 0000:02:00.0: iwlagn_tx_agg_start on ra = 00:26:f2:94:ba:59 tid = 0

snip of strace
open("resume", O_RDWR|O_LARGEFILE)      = 3
stat64("/dev/snapshot", {st_mode=S_IFCHR|0660, st_rdev=makedev(10, 231), ...}) = 0
open("/dev/snapshot", O_RDONLY|O_LARGEFILE) = 4
ioctl(4, 0x400c330d, 0xffe07a3c)        = -1 EINVAL (Invalid argument)
ioctl(4, 0x4004330a, 0x805)             = -1 EINVAL (Invalid argument)
write(2, "s2disk: Could not use the resume"..., 82s2disk: Could not use the resume device (try 
swapon -a). Reason: Invalid argument

echo mem > /sys/power/state
.. works fine, but no compression, status or encryption.

Regards,
Brad
-- 
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