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| author | Stefano Stabellini <stefano.stabellini@xilinx.com> | 2021-05-12 23:18:21 +0300 |
|---|---|---|
| committer | Juergen Gross <jgross@suse.com> | 2021-05-14 16:52:05 +0300 |
| commit | cb6f6b3384d7825d2a43f2256c5200e3b3956fc8 (patch) | |
| tree | c5109d5a463e339514a84db389cb8a6e519d03ac /include/xen | |
| parent | dbc03e81586fc33e4945263fd6e09e22eb4b980f (diff) | |
| download | linux-cb6f6b3384d7825d2a43f2256c5200e3b3956fc8.tar.xz | |
xen/arm: move xen_swiotlb_detect to arm/swiotlb-xen.h
Move xen_swiotlb_detect to a static inline function to make it available
to !CONFIG_XEN builds.
CC: boris.ostrovsky@oracle.com
CC: jgross@suse.com
Signed-off-by: Stefano Stabellini <stefano.stabellini@xilinx.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Juergen Gross <jgross@suse.com>
Link: https://lore.kernel.org/r/20210512201823.1963-1-sstabellini@kernel.org
Signed-off-by: Juergen Gross <jgross@suse.com>
Diffstat (limited to 'include/xen')
| -rw-r--r-- | include/xen/arm/swiotlb-xen.h | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/include/xen/arm/swiotlb-xen.h b/include/xen/arm/swiotlb-xen.h index 2994fe6031a0..33336ab58afc 100644 --- a/include/xen/arm/swiotlb-xen.h +++ b/include/xen/arm/swiotlb-xen.h @@ -2,6 +2,19 @@ #ifndef _ASM_ARM_SWIOTLB_XEN_H #define _ASM_ARM_SWIOTLB_XEN_H -extern int xen_swiotlb_detect(void); +#include <xen/features.h> +#include <xen/xen.h> + +static inline int xen_swiotlb_detect(void) +{ + if (!xen_domain()) + return 0; + if (xen_feature(XENFEAT_direct_mapped)) + return 1; + /* legacy case */ + if (!xen_feature(XENFEAT_not_direct_mapped) && xen_initial_domain()) + return 1; + return 0; +} #endif /* _ASM_ARM_SWIOTLB_XEN_H */ |