nosmp causes 'ata1: COMRESET failed' on vmlinuz-2.6.23.1-42.fc8

[Todd Denniston]

Folks,
While attempting to get xorg working[1] in vesa and fbdev mode with the CF52 I 
have, I tried using the nosmp boot option and received an unexpected result on 
boot.  Fortunately I don't require nosmp to get the system working, but I 
definitely was not expecting the nosmp option to cause a failure of the ata 
subsystem.

The system:
a Panasonic CF-52, see attached lspci for some details
reformatted to clean, then installed from F8T3 [2],
immediately following install it was fully yum updated to the 
fedora/linux/development/i386/os/ as of "Nov  6 08:15" [3].
nothing from any non fedora/linux/development/i386/os/ has been installed.

I also tried the system after modifying the bios setting which 
enables|disables both cores in smp.


grub outputs:
kernel /vmlinuz-2.6.23.1-42.fc8 ro root=LABEL=/ nosmp rhgb quiet

---- Console output -----
Uncompressing Linux... Ok, booting the kernel.
Red Hat nash version 6.0.19 starting
ata1: COMRESET failed (errno=-16)
ata1: COMRESET failed (errno=-16)
ata1: COMRESET failed (errno=-16)
---- end Console output -----
followed by the nash script output about swap and mounts not working because 
the disk is not available.


nosmp	bios	result
-----	----	------
!use	smp	Boots and works normally, modulo X problems.
!use	!smp	Boots and works normally, modulo X problems.
use	smp	Fails with ata1: COMRESET failed
use	!smp	Fails with ata1: COMRESET failed



Is the above and attached enough information?

[1]  or at least track down why it is not, which is a subject for a different 
thread.
[2] No torrent allowed at my location, so I am using what I have.
[3] TZ=EST I think, based on when repodata/comps.xml was set at the mirror
	also the last updated file in development/i386/os/Package was
	Nov  2 14:01 selinux-policy-3.0.8-44.fc8.noarch.rpm

-- 
Todd Denniston
Crane Division, Naval Surface Warfare Center (NSWC Crane)
Harnessing the Power of Technology for the Warfighter
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