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SubjectRe: 2.5.65 7880 SCSI bug
On Fri, 28 Mar 2003, Greg Copeland wrote:

> I have an Asus P2L97-DS motherboard. It has two PII-333 in it. I'm
> using the onboard SCSI interface, which is a 7880 (U). I have 5-SCSI
> drives (combination of wide and narrow), a SCSI CDROM and a SCSI tape
> drive. The drives have ID's 0-6 while the interface has ID 7.
>
> When attempting to boot 2.5.65 or 2.5.64, neither is able to get past
> SCSI initialization. It simply loops and never completes a boot cycle.
> I have tried both the "newer" Adaptec AIC7xxx Fast -> U160 support (New
> Driver) and the older Adaptec AIC7xxx support (old driver). Both
> experience the same behavior.
>
> I'm currently running 2.4.19 and this system has been working, more or
> less as is, since the mid 2.2-days.

Could you try booting with the following combinations of kernel
parameters and report back.

1) "noapic"
2) "maxcpus=1"
3) "noirqbalance" with the appended patch.

Note that this didn't do anything for me either, my current workaround
until i find out what's wrong is booting with noapic.

Index: linux-2.5.66/arch/i386/kernel/io_apic.c
===================================================================
RCS file: /build/cvsroot/linux-2.5.66/arch/i386/kernel/io_apic.c,v
retrieving revision 1.1.1.1
diff -u -p -B -r1.1.1.1 io_apic.c
--- linux-2.5.66/arch/i386/kernel/io_apic.c 24 Mar 2003 23:40:27 -0000 1.1.1.1
+++ linux-2.5.66/arch/i386/kernel/io_apic.c 28 Mar 2003 16:48:41 -0000
@@ -1143,7 +1143,7 @@ void __init setup_IO_APIC_irqs(void)
entry.delivery_mode = INT_DELIVERY_MODE;
entry.dest_mode = INT_DEST_MODE;
entry.mask = 0; /* enable IRQ */
- entry.dest.logical.logical_dest = TARGET_CPUS;
+ entry.dest.logical.logical_dest = 1; /* TARGET_CPUS; */

idx = find_irq_entry(apic,pin,mp_INT);
if (idx == -1) {
--
function.linuxpower.ca
-
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