From: Jiang Liu <jiang.liu@linux.intel.com>
To: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Sander Eikelenboom <linux@eikelenboom.it>,
David Vrabel <david.vrabel@citrix.com>,
Thomas Gleixner <tglx@linutronix.de>,
Bjorn Helgaas <bhelgaas@google.com>,
"Rafael J. Wysocki" <rjw@rjwysocki.net>,
Len Brown <len.brown@intel.com>, Pavel Machek <pavel@ucw.cz>,
Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
x86@kernel.org, "Rafael J . Wysocki" <rafael.j.wysocki@intel.com>,
Tony Luck <tony.luck@intel.com>,
linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org,
xen-devel@lists.xenproject.org, linux-pci@vger.kernel.org
Subject: Re: [Bugfix v4 1/2] xen/pci: Fix xen IRQ allocation failure caused by commit b81975eade8c
Date: Mon, 19 Jan 2015 12:39:27 +0800 [thread overview]
Message-ID: <54BC8A7F.5070502@linux.intel.com> (raw)
In-Reply-To: <20150116181318.GA22690@l.oracle.com>
On 2015/1/17 2:13, Konrad Rzeszutek Wilk wrote:
> On Thu, Jan 15, 2015 at 09:04:35PM +0800, Jiang Liu wrote:
<snit>
>>
>> Note: we need to test this patch on those special AMD systems which
>> override normal SCI GSI (9) with strange GSI (20).
>
> [ 0.000000] DMI: Supermicro X8DTN/X8DTN, BIOS 2.1c 10/28/2011
> ..
> 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
> [ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 20 low level)
> [ 0.000000] ACPI: IRQ0 used by override.
> ..
> 6.358737] xen: registering gsi 20 triggering 0 polarity 1
> [ 6.358756] xen: --> pirq=20 -> irq=20 (gsi=20)
> ...
> -bash-4.1# cat /proc/interrupts |grep acpi
> 20: 0 0 0 xen-pirq-ioapic-level acpi
>
Thanks Konrad, it works as expected. Previously IRQ9 was assigned
to ACPI SCI GSI 20, now it assigns IRQ20. But that's OK, ACPI has
no special requirement about the assigned IRQ number, we could
assign any valid IRQ number for ACPI SCI GSI.
Thanks!
Gerry
next prev parent reply other threads:[~2015-01-19 4:39 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1421204979-30619-1-git-send-email-jiang.liu@linux.intel.com>
[not found] ` <1421327077-19894-1-git-send-email-jiang.liu@linux.intel.com>
2015-01-15 13:04 ` [Bugfix v4 1/2] xen/pci: Fix xen IRQ allocation failure caused by commit b81975eade8c Jiang Liu
2015-01-16 18:13 ` Konrad Rzeszutek Wilk
2015-01-19 4:39 ` Jiang Liu [this message]
2015-01-19 4:41 ` Jiang Liu
2015-01-20 19:12 ` Konrad Rzeszutek Wilk
2015-01-15 13:04 ` [Bugfix v4 2/2] xen/pci: Simplify x86/pci/xen.c by killing gsi_override related code Jiang Liu
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