From: Olaf Hering <olaf@aepfle.de>
Date: Thu, 25 Aug 2011 16:30:48 +0000 (+0200)
Subject: xen/pv-on-hvm kexec: rebind virqs to existing eventchannel ports
X-Git-Tag: v3.2-rc1~192^2~6
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=62cc5fc7b2e0218144e162afb8191db9b924b5e6;p=pandora-kernel.git

xen/pv-on-hvm kexec: rebind virqs to existing eventchannel ports

During a kexec boot some virqs such as timer and debugirq were already
registered by the old kernel.  The hypervisor will return -EEXISTS from
the new EVTCHNOP_bind_virq request and the BUG in bind_virq_to_irq()
triggers.  Catch the -EEXISTS error and loop through all possible ports to find
what port belongs to the virq/cpu combo.

Signed-off-by: Olaf Hering <olaf@aepfle.de>
[v2:
  - use NR_EVENT_CHANNELS instead of private MAX_EVTCHNS]
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
---

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