From: Anthony Liguori <aliguori@us.ibm.com>
Date: Sun, 2 Mar 2008 22:37:48 +0000 (-0600)
Subject: virtio: Use spin_lock_irqsave/restore for virtio-pci
X-Git-Tag: v2.6.25-rc7~114^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=27ebe308af7c14aed0711e25817c6a1235bd16ff;p=pandora-kernel.git

virtio: Use spin_lock_irqsave/restore for virtio-pci

virtio-pci acquires its spin lock in an interrupt context so it's necessary
to use spin_lock_irqsave/restore variants.  This patch fixes guest SMP when
using virtio devices in KVM.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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