From: Sheng Yang <sheng@linux.intel.com>
Date: Tue, 6 Jan 2009 08:25:11 +0000 (+0800)
Subject: KVM: Add support to disable MSI for assigned device
X-Git-Tag: v2.6.30-rc1~664^2~52
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=17071fe74fe0fbfdb03cd9b82f2490447cf1f986;p=pandora-kernel.git

KVM: Add support to disable MSI for assigned device

MSI is always enabled by default for msi2intx=1. But if msi2intx=0, we
have to disable MSI if guest require to do so.

The patch also discard unnecessary msi2intx judgment if guest want to update
MSI state.

Notice KVM_DEV_IRQ_ASSIGN_MSI_ACTION is a mask which should cover all MSI
related operations, though we only got one for now.

Signed-off-by: Sheng Yang <sheng@linux.intel.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
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