lkml.org 
[lkml]   [2009]   [May]   [18]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
SubjectRe: tip: patches in git for irq and numa
please check following patch

Thanks

YH

Subject: [PATCH] x86: don't mark pin_programmed early

Peter bisected that
| commit b9c61b70075c87a8612624736faf4a2de5b1ed30
| Date: Wed May 6 10:10:06 2009 -0700
|
| x86/pci: update pirq_enable_irq() to setup io apic routing
|
| So we can set io apic routing only when enabling the device irq.
wrecked his opteron box, ata1 interrupts fail to get through

and that ata1 is using irq 11
[ 1.451839] sata_svw 0000:01:0e.0: version 2.3
[ 1.456333] sata_svw 0000:01:0e.0: PCI INT A -> GSI 11 (level, low) -> IRQ 11
[ 1.463639] scsi0 : sata_svw
[ 1.466949] scsi1 : sata_svw
[ 1.470022] scsi2 : sata_svw
[ 1.473090] scsi3 : sata_svw
[ 1.476112] ata1: SATA max UDMA/133 mmio m8192@0xff3fe000 port 0xff3fe000 irq 11
[ 1.483490] ata2: SATA max UDMA/133 mmio m8192@0xff3fe000 port 0xff3fe100 irq 11
[ 1.490870] ata3: SATA max UDMA/133 mmio m8192@0xff3fe000 port 0xff3fe200 irq 11
[ 1.498247] ata4: SATA max UDMA/133 mmio m8192@0xff3fe000 port 0xff3fe300 irq 11

that pin is overlapped with pin with legacy ones.
We should not set bits in pin_programmed here, so that those bit could be set later
via io_apic_set_pci_routing()

Reported-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Yinghai Lu <yinghai.lu@kernel.org>

diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index 6b7913b..ed6a91c 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -1538,7 +1538,10 @@ static void __init setup_IO_APIC_irqs(void)
}
cfg = desc->chip_data;
add_pin_to_irq_node(cfg, node, apic_id, pin);
- set_bit(pin, mp_ioapic_routing[apic_id].pin_programmed);
+ /*
+ * don't mark it in pin_programmed, so later acpi could
+ * set it correctly when irq < 16
+ */
setup_IO_APIC_irq(apic_id, pin, irq, desc,
irq_trigger(idx), irq_polarity(idx));
}

\
 
 \ /
  Last update: 2009-05-18 19:27    [W:0.163 / U:1.432 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site