From mboxrd@z Thu Jan  1 00:00:00 1970
From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Subject: Re: [Bugfix v4 1/2] xen/pci: Fix xen IRQ allocation
 failure caused by commit b81975eade8c
Date: Tue, 20 Jan 2015 14:12:42 -0500
Message-ID: <20150120191242.GC13409@l.oracle.com>
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To: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Len Brown <len.brown@intel.com>, "Rafael J . Wysocki" <rafael.j.wysocki@intel.com>, Tony Luck <tony.luck@intel.com>, linux-pci@vger.kernel.org, linux-pm@vger.kernel.org, x86@kernel.org, "Rafael J. Wysocki" <rjw@rjwysocki.net>, linux-kernel@vger.kernel.org, Sander Eikelenboom <linux@eikelenboom.it>, Ingo Molnar <mingo@redhat.com>, David Vrabel <david.vrabel@citrix.com>, Pavel Machek <pavel@ucw.cz>, "H. Peter Anvin" <hpa@zytor.com>, Bjorn Helgaas <bhelgaas@google.com>, xen-devel@lists.xenproject.org, Thomas Gleixner <tglx@linutronix.de>
List-Id: linux-pm@vger.kernel.org

On Mon, Jan 19, 2015 at 12:41:24PM +0800, Jiang Liu wrote:
> 
> 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
> Hi Konrad,

> 	May I assume an Tested-by from you here?

Yes for this particular use case. I hadn't yet tried to push the ACPI buttons
(this printout was from an server in a basement).
> Thanks!
> Gerry