view xen/include/xen/percpu.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 f3fb7727cb9a
line source
1 #ifndef __XEN_PERCPU_H__
2 #define __XEN_PERCPU_H__
4 #include <xen/config.h>
5 #include <asm/percpu.h>
7 /* Preferred on Xen. Also see arch-defined per_cpu(). */
8 #define this_cpu(var) __get_cpu_var(var)
10 /* Linux compatibility. */
11 #define get_cpu_var(var) this_cpu(var)
12 #define put_cpu_var(var)
14 #endif /* __XEN_PERCPU_H__ */