ia64/xen-unstable

view xen/include/xen/numa.h @ 19800:78962f85c562

IOMMU: Add two generic functions to vendor neutral interface

Add 2 generic functions into the vendor neutral iommu interface, The
reason is that from changeset 19732, there is only one global flag
"iommu_enabled" that controls iommu enablement for both vtd and amd
systems, so we need different code paths for vtd and amd iommu systems
if this flag has been turned on. Also, the early checking of
"iommu_enabled" in iommu_setup() is removed to prevent iommu
functionalities from been disabled on amd systems.

Signed-off-by: Wei Wang <wei.wang2@amd.com>
author Keir Fraser <keir.fraser@citrix.com>
date Fri Jun 19 08:41:50 2009 +0100 (2009-06-19)
parents 2f9e1348aa98
children
line source
1 #ifndef _XEN_NUMA_H
2 #define _XEN_NUMA_H
4 #include <xen/config.h>
5 #include <asm/numa.h>
7 #ifndef NODES_SHIFT
8 #define NODES_SHIFT 0
9 #endif
11 #define NUMA_NO_NODE 0xFF
13 #define MAX_NUMNODES (1 << NODES_SHIFT)
15 #define vcpu_to_node(v) (cpu_to_node((v)->processor))
17 #define domain_to_node(d) \
18 (((d)->vcpu != NULL && (d)->vcpu[0] != NULL) \
19 ? vcpu_to_node((d)->vcpu[0]) : NUMA_NO_NODE)
21 #endif /* _XEN_NUMA_H */