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Message-Id: <1291928497-5599-1-git-send-email-konrad.wilk@oracle.com>
Date: Thu, 9 Dec 2010 16:01:35 -0500
From: Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
To: linux-kernel@...r.kernel.org,
Stefano Stabellini <stefano.stabellini@...citrix.com>
Cc: xen-devel@...ts.xensource.com,
Jeremy Fitzhardinge <jeremy@...p.org>,
Konrad Rzeszutek Wilk <konrad@...nel.org>
Subject: [PATCH] Fix when booting Xen+Linux under QEMU.
Please take a look. The first patch just cleans up the find_unbound_irq
so it is easier to understand what it does.
The second patch hardness the Xen IRQ (event channels) allocation finder
if you try to boot a minimalistic 32-bit Linux kernel along with a
Xen hypervisor under QEMU.
We end up with a weird scenario where the nr_irq_gsi was greater than nr_irq
by 16. This code hardness it by pointing out the issue to the user and tries
to continue - BUT this might impact the PCI device allocation.
Tested also on normal machine with no regressions found.
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