From: Avi Kivity <avi@redhat.com>
To: Gleb Natapov <gleb@redhat.com>
Cc: "Kevin O'Connor" <kevin@koconnor.net>,
Ruben Kerkhof <ruben@rubenkerkhof.com>,
Teck Choon Giam <giamteckchoon@gmail.com>,
kvm@vger.kernel.org, seabios@seabios.org
Subject: Re: system_powerdown not working for qemu-kvm 0.12.4?
Date: Tue, 12 Oct 2010 09:39:50 +0200 [thread overview]
Message-ID: <4CB410C6.5040407@redhat.com> (raw)
In-Reply-To: <4CB40F56.20402@redhat.com>
On 10/12/2010 09:33 AM, Avi Kivity wrote:
>
> Aha! The piix4 specification updates says:
>
>>
>> • IRQ9OUT#/GPO29 should be labeled as IRQ9OUT/GPO29
>
Even more explicitly:
> 14. IRQ9OUT# Is Active HI
> Problem: The signal identified as IRQ9OUT#/GPO29, pin F3, is not
> active level LO, it is active level HI, when APIC Chip Select
> (XBCS[8]) is set.
> Implication: This signal is typically used in Dual Processor capable
> systems and is connected to an IOAPIC. If the IOAPIC input is
> programmed for level LO, and SCIs or SM Bus events in the
> PIIX4/PIIX4E/PIIX4M are programmed to be reported on IRQ9OUT, devices
> using these will not be recognized by the IOAPIC and will not work
> correctly.
> Workaround: Program the appropriate input of the IOAPIC to active
> level HI.
> Status: This will not be fixed in the PIIX4/PIIX4E/PIIX4M. This is
> planned to be incorporated into the PIIX4 datasheet as a specification
> change.
--
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.
next prev parent reply other threads:[~2010-10-12 7:40 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-15 1:19 system_powerdown not working for qemu-kvm 0.12.4? Teck Choon Giam
2010-05-15 9:36 ` Michael Tokarev
2010-05-16 11:52 ` Avi Kivity
2010-05-19 9:23 ` Teck Choon Giam
2010-05-19 16:22 ` Avi Kivity
2010-08-14 23:32 ` Teck Choon Giam
2010-08-15 11:00 ` Avi Kivity
2010-08-15 16:15 ` Teck Choon Giam
2010-08-15 16:19 ` Avi Kivity
2010-08-15 17:53 ` Teck Choon Giam
2010-10-07 12:30 ` Teck Choon Giam
2010-10-11 16:29 ` Ruben Kerkhof
2010-10-11 16:57 ` Avi Kivity
2010-10-11 17:53 ` Ruben Kerkhof
2010-10-12 6:49 ` Avi Kivity
2010-10-12 7:11 ` Kevin O'Connor
2010-10-12 7:14 ` Gleb Natapov
2010-10-12 7:25 ` Avi Kivity
2010-10-12 7:33 ` Avi Kivity
2010-10-12 7:39 ` Avi Kivity [this message]
2010-10-12 7:40 ` Gleb Natapov
2010-10-12 7:44 ` Avi Kivity
2010-10-15 1:45 ` Ruben Kerkhof
2010-10-15 7:01 ` Gleb Natapov
2010-10-15 14:26 ` Ruben Kerkhof
2010-10-15 15:53 ` Teck Choon Giam
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