RedHat 6.0 kernel causes early panic on AlphaServer 2100 (Sable) 4/275 with 2 CPU's 21064, NCR SCSI, 192MB RAM, boot from SRM console. Symptomps: original non-smp kernel: when aboot finishes kernel load it says 'CPU 0 halted' and stops. kernel-smp.img from errata: lots of panics right after hardware detection. RedHat 5.2 works fine (2.0.35 kernel - sable-s.img).
Additional HW description of above AlphaServer 2100: /proc/cpuinfo (there are 2 cpus but non-smp kernel now): cpu : Alpha cpu model : EV45 cpu variation : 7 cpu revision : 0 cpu serial number : system type : Sable system variation : 0 system revision : 0 system serial number : ay52513521 cycle frequency [Hz] : 274725274 timer frequency [Hz] : 1024.00 page size [bytes] : 8192 phys. address bits : 34 max. addr. space # : 63 BogoMIPS : 545.25 kernel unaligned acc : (pc=0,va=0) user unaligned acc : 0 (pc=0,va=0) platform string : AlphaServer 2100 4/275 SCSI controller: ncr53c8xx: 53c810 detected ncr53c8xx: at PCI bus 0, device 1, function 0 ncr53c8xx: 53c810 detected ncr53c810-0: rev=0x01, base=0x9000000, io_port=0x9000, irq=33 ncr53c810-0: ID 7, Fast-10, Parity Checking ncr53c810-0: restart (scsi reset). scsi0 : ncr53c8xx - revision 2.6n scsi : 1 host. ... Network card: eth0: DE434/5 at 0x9800 (PCI bus 0, device 0), h/w address 08:00:2b:e4:ac:fc, and requires IRQ32 (provided by PCI BIOS). de4x5.c:V0.5351 1998/7/5 davies.com
Assigned to dledford
Seems to be fixed in 2.2.14 and later kernels. Howerver kernel option 'PCI Quirks = Yes' needed to detect SCSI in such SMP kernels (tested 2.2.14 and 2.2.16)
I assume that you're now using 6.2/7.0 by now and this is no longer a problem