PII SMP system hangs during boot with ACPI enabled

[John Polstra]

On 24-Nov-2003 Nate Lawson wrote:
> 
> Trace 1:
> wakeup(c2944100,0,c06a7546,140,6c) at wakeup+0x4
> AcpiOsSignalSemaphore(c2944100,1) at AcpiOsSignalSemaphore+0xa8
> AcpiUtReleaseMutex(9,30,c295e8c0,c295e760,cdb64acc) at AcpiUtReleaseMutex+0x8c
> AcpiUtReleaseToCache(3,c295e760,cdb64ad8,c045ac17,c295e760) at
> AcpiUtReleaseToCache+0x8c
> 
> Trace 2:
> _mtx_unlock_flags(c2944100,0,c06a7546,150,6c) at _mtx_unlock_flags+0x96
> AcpiOsSignalSemaphore(c2944100,1) at AcpiOsSignalSemaphore+0xc8
> AcpiUtReleaseMutex(9,8,c045f9cc,c2965940,c12a0c00) at AcpiUtReleaseMutex+0x8c
> AcpiUtAcquireFromCache(2,cdb64bf4,c0462229,c12a0c00,cdb64c34) at
> AcpiUtAcquireFromCache+0x53
> 
> Both of these show that acpi_task_thread is calling a task and then
> AcpiOsSignalSemaphore is hanging.  I'm wondering if your system can't
> handle the acpi interrupt being moved to irq 20.  Please try this
> (untested) patch that should disable moving the SCI to irq 20.

As I mentioned a minute ago, the patch didn't help.  But I grabbed
another stack trace while I was at it.  This one is quite different
from the others.  I don't think it's different because of your
patch, though.  I saw one like this earlier, but thought it might
have been an anomaly caused by my own mucking around in DDB.

siointr1(c298d000,0,c06c9b97,6a0,cdb5ec70) at siointr1+0xec
siointr(c298d000,c053a016,c06d88a0,c06e7ae0,4) at siointr+0x35
intr_execute_handlers(c129f88c,cdb5ec88,cdb5eccc,c065ca43,34) at
intr_execute_handlers+0xc8
lapic_handle_intr(34) at lapic_handle_intr+0x3a
Xapic_isr1() at Xapic_isr1+0x33
--- interrupt, eip = 0xc053a4ea, esp = 0xcdb5eccc, ebp = 0xcdb5eccc ---
critical_exit(c070af20,1,c06b8c37,14b,0) at critical_exit+0x2a
_mtx_unlock_spin_flags(c070af20,0,c06b74f7,23a,c294954c) at
_mtx_unlock_spin_flags+0x9d
ithread_loop(c12a6800,cdb5ed48,c06b7365,311,0) at ithread_loop+0x26e
fork_exit(c0520150,c12a6800,cdb5ed48) at fork_exit+0xb4
fork_trampoline() at fork_trampoline+0x8
--- trap 0x1, eip = 0, esp = 0xcdb5ed7c, ebp = 0 ---

John