xen/swiotlb: Simplify the logic.

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Its pretty easy:
 1). We only check to see if we need Xen SWIOTLB for PV guests.
 2). If swiotlb=force or iommu=soft is set, then Xen SWIOTLB will
     be enabled.
 3). If it is an initial domain, then Xen SWIOTLB will be enabled.
 4). Native SWIOTLB must be disabled for PV guests.

Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

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Konrad Rzeszutek Wilk 2012-07-27 20:10:58 -04:00

parent 28a33cbc24

commit 988f0e24bb

1 changed files with 5 additions and 4 deletions

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arch/x86/xen/pci-swiotlb-xen.c

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