Date: Mon, 4 Dec 2006 12:00:27 -0500 From: John Baldwin <jhb@freebsd.org> To: Hiroki Sato <hrs@freebsd.org> Cc: lydianconcepts@gmail.com, stable@freebsd.org Subject: Re: strange behavior of ioapic on PDSME motherboard (was: LSI 53C1030/mpt(4) problem) Message-ID: <200612041200.27861.jhb@freebsd.org> In-Reply-To: <20061204.125553.133857290.hrs@allbsd.org> References: <20061202.201139.35852412.hrs@allbsd.org> <4571BE11.4030009@samsco.org> <20061204.125553.133857290.hrs@allbsd.org>
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On Sunday 03 December 2006 22:55, Hiroki Sato wrote:
> Hiroki Sato <hrs@freebsd.org> wrote
> in <20061202.201139.35852412.hrs@allbsd.org>:
>
> hr> Recently I bought Intel Pentium D 945 (3.45GHz), Supermicro PDSME
> hr> (Intel E7320), and LSI21320RB (PCI-X SCSI HBA using LSI 53C1030). I
> hr> installed 6.2-RC1 to an old PATA HDD and attached it to the
> hr> motherboard, and it worked fine. However, I installed 21320RB and
> hr> made several SCSI HDDs attached, some strange problems occurred.
>
> It worked when I turned off ioapic and/or acpi. When acpi was
> disabled, mpt seemed to work but em did not work due to the UP/DOWN
> storm ("vmstat -i" did not display an irq for em0 at that time).
> When ioapic was disabled, all devices worked with shared irqs.
>
> So, this is probably an ioapic's issue, not a mpt's, and PDSME
> specific I guess. Sorry for the false alarm.
>
> John, are there any big changes of ioapic support between RELENG_6
> and CURRENT? I would like your comments to narrow down the cause.
> The 7.0-CURRENT November snapshot could probe the mpt (as a very slow
> device, though), and both em and mpt worked with acpi/ioapic enabled.
> I had a look at the changes in sys/i386/i386, but I am not sure
> if which is likely (or not)...
There aren't any non-cosmetic changes in the apic code between 6.x and HEAD.
--
John Baldwin
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