Kernel panic in cpu_ipi_send()

[Thomas Moestl]

On Wed, 2003/08/13 at 14:49:00 +0400, Andrew Belashov wrote:
> Any ideas about this panic:
> 
> panic: ipi_send: couldn't send ipi
> cpuid = 1;
> Debugger("panic")
> Stopped at      Debugger+0x1c:  ta              %xcc, 1
> 
> db> trace
> panic() at panic+0x134
> cpu_ipi_send() at cpu_ipi_send+0xb0
> cpu_ipi_selected() at cpu_ipi_selected+0x38
> tlb_page_demap() at tlb_page_demap+0x74
> pmap_zero_page_idle() at pmap_zero_page_idle+0xe4
> vm_page_zero_idle() at vm_page_zero_idle+0x74
> vm_pagezero() at vm_pagezero+0xb4
> fork_exit() at fork_exit+0x90
> fork_trampoline() at fork_trampoline+0x8

It should be possible to work around this by bumping IPI_RETRIES in
sys/sparc64/include/smp.h, unless there's a more serious problem in
the background.

	- Thomas

-- 
Thomas Moestl <t.moestl at tu-bs.de>	http://www.tu-bs.de/~y0015675/
              <tmm at FreeBSD.org>		http://people.FreeBSD.org/~tmm/
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