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[Xen-devel] Backport per-device vector map patches to xen 4.1.3

from [Wei Wang2]

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To:	Jan Beulich <JBeulich@xxxxxxxx>, Keir Fraser <keir@xxxxxxx>
Subject:	[Xen-devel] Backport per-device vector map patches to xen 4.1.3
From:	Wei Wang2 <wei.wang2@xxxxxxx>
Date:	Thu, 27 Oct 2011 16:07:51 +0200
Cc:	Dunlap <George.Dunlap@xxxxxxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, "Shin, Jacob" <Jacob.Shin@xxxxxxx>, George, "Huang2, Wei" <Wei.Huang2@xxxxxxx>
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Recently we found an issue in xen 4.1. Under heavy I/O stress such as running 
bonnie++, Dom0 would lost its hard disk with lots of I/O errors. We found 
that some PCI-E devices was using the same vector as SMBus on AMD platforms 
and George' patch set that enables per-device vector map can fix this 
problem.

Following patches have been back ported and tested by Jacob and Wei H.  
Please apply them to Xen 4.1.3 

Thanks,
Wei

23752 xen: Infrastructure to allow irqs to share vector maps
23753 xen: Option to allow per-device vector maps for MSI IRQs
23754 xen: AMD IOMMU: Automatically enable per-device vector maps
23786 x86: Fix up irq vector map logic
23812 xen: Add global irq_vector_map option
23899 AMD-IOMMU: remove dead variable references

23754.diff
Description: 23754.diff

23753.diff
Description: 23753.diff

23752.diff
Description: 23752.diff

23786.diff
Description: 23786.diff

23899.diff
Description: 23899.diff

23812.diff
Description: 23812.diff

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