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0001 /* SPDX-License-Identifier: GPL-2.0 */ 0002 #ifndef _ASM_ARM_SWIOTLB_XEN_H 0003 #define _ASM_ARM_SWIOTLB_XEN_H 0004 0005 #include <xen/features.h> 0006 #include <xen/xen.h> 0007 0008 static inline int xen_swiotlb_detect(void) 0009 { 0010 if (!xen_domain()) 0011 return 0; 0012 if (xen_feature(XENFEAT_direct_mapped)) 0013 return 1; 0014 /* legacy case */ 0015 if (!xen_feature(XENFEAT_not_direct_mapped) && xen_initial_domain()) 0016 return 1; 0017 return 0; 0018 } 0019 0020 #endif /* _ASM_ARM_SWIOTLB_XEN_H */
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