[Xen-devel] [PATCH] Included reserved memory regions in dom0 iommu mappings

[Ross Philipson <Ross.Philipson@xxxxxxxxxx>]

This adds a boolean boot parameter to xen to allow reserved memory

regions to be added to the iommu mappings for dom0. The parameter

is "iommu_include_reserved" and is off by default. A warning is

also traced when incorrect RMRR to system memory map values are

detected. This is being added to address some incorrect BIOS's that

do not report correctly the requied reserved memory ranges in

the RMRRs. When this occurs it currently can cause early boot hangs

and crashes.

 

Signed-off-by: Ross Philipson <ross.philipson@xxxxxxxxxx>

 

Based on changeset 19238

 

Thanks

Ross

 

 

Ross Philipson

Senior Software Engineer

Citrix Systems, Inc

14 Crosby Drive

Bedford, MA 01730

781-301-7949

ross.philipson@xxxxxxxxxx

 

Attachment: iommu_include_reserved.patch
Description: iommu_include_reserved.patch

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