cvs commit: src/sys/amd64/amd64 machdep.c
jhb at freebsd.org
Mon Nov 28 21:37:39 GMT 2005
On Monday 28 November 2005 04:06 pm, Scott Long wrote:
> John Baldwin wrote:
> > On Monday 21 November 2005 01:39 pm, John Baldwin wrote:
> >>jhb 2005-11-21 18:39:17 UTC
> >> FreeBSD src repository
> >> Modified files:
> >> sys/amd64/amd64 machdep.c
> >> Log:
> >> Expand the hack to mask the atpics if 'device atpic' is not in the
> >> kernel during boot up. Now we do a full reset of the 8259As and setup a
> >> simple interrupt handler (we actually borrow the apic one that just does
> >> an immediate iret) to handle any spurious interrupts triggered by either
> >> chip. This should fix some folks that were getting a Trap 30 during
> >> bootup of certain SMP AMD systems. This might get pushed into the 6.0
> >> branch as an errata. For now a suitable workaround is to add 'device
> >> atpic' to your kernel config.
> >> Tested by: scottl
> >> Helpful info from: dillon
> >> MFC after: 1 week
> > Hmm, we probably still need to reprogram the ATPIC on resume as well.
> > I'm not sure it's actually worth not just compiling the atpic code in on
> > amd64.
> Problems aside, what are the benefits to not having the atpic
> unconditionally included on amd64?
Purely space savings. It's whatever the size of atpic.o, elcr.o, and the bits
of atpic_vector.S that make it into exception.o are.
John Baldwin <jhb at FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve" = http://www.FreeBSD.org
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