Re: Sparc64 kernel message: BUG: soft lockup detected on CPU#3!

[Jan Engelhardt]

>> I have not seen this soft lockup so far, though I run a 2.6.16, most 
>> likely using CONFIG_PROM_CONSOLE (redirected to ttya by prom) because
>> the machine is not a SUN4V (which SUNHV seems to be for).
>
>You could be using one of the other serial drivers.
>Check the boot messages and your kernel config.

Thanks for the hint. I am still a bit puzzled why there are so many 
serial ports detected even though there is only ttya and ttyb on the 
back:

Console: switching to mono PROM 80x24
su0 at 0x000001fff13062f8 (irq = 5,7ea) is a 16550A
su1 at 0x000001fff13083f8 (irq = 9,7e9) is a 16550A
ttyS0 at MMIO 0x1fff1400000 (irq = 7901920) is a SAB82532 V3.2
Console: ttyS0 (SAB82532)
ttyS1 at MMIO 0x1fff1400040 (irq = 7901920) is a SAB82532 V3.2
ttyS2 at MMIO 0x1fff1200000 (irq = 7901664) is a SAB82532 V3.2
ttyS3 at MMIO 0x1fff1200040 (irq = 7901664) is a SAB82532 V3.2

One of them may actually be the mouse though currently no [SUN4] 
keyboard (and hence no mouse) is attached.



	-`J'
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