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SubjectRE: [patch] ioapic-2.4.5-A1
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-- Juha

:: -----Original Message-----
:: From: linux-smp-owner@vger.kernel.org
:: [mailto:linux-smp-owner@vger.kernel.org] On Behalf Of Ingo Molnar
:: Sent: Tuesday, 29 May 2001 23:11
:: To: linux-kernel@vger.kernel.org
:: Cc: linux-smp@vger.kernel.org; Alan Cox
:: Subject: [patch] ioapic-2.4.5-A1
::
::
::
:: the attached ioapic-2.4.5-A1 patch includes a number of
:: important IO-APIC
:: related fixes (against 2.4.5-ac3):
::
:: - correctly handle bridged devices that are not listed in
:: the mptable
:: directly. This fixes eg. dual-port eepro100 devices on
:: Compaq boxes
:: with such PCI layout:
::
:: -+-[0d]---0b.0
:: +-[05]-+-02.0
:: | \-0b.0
:: \-[00]-+-02.0
:: +-03.0-[01]--+-04.0 <=== eth0
:: | \-05.0 <=== eth1
:: +-0b.0
:: +-0c.0
:: +-0d.0
:: +-0e.0
:: +-0f.0
:: +-14.0
:: +-14.1
:: +-19.0
:: +-1a.0
:: \-1b.0
::
:: without the patch the eepro100 devices get misdetected as
:: XT-PIC IRQs
:: and their interrupts are stuck.
::
:: - the srcbus entry in the mptable does not have to be
:: translated into
:: a PCI-bus value.
::
:: - add more APIC versions to the whitelist
::
:: - initialize mp_bus_id_to_pci_bus[] correctly, so that we can detect
:: nonlisted/bridged PCI busses more accurately.
::
:: the patch should only affect systems that were not working properly
:: before, but it might break broken-mptable systems - we'll see.
::
:: Ingo
::

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