tjh.dev / kernel
Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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kernel / include / xen / arm / swiotlb-xen.h
at v6.1-rc2 20 lines 431 B view raw
1/* SPDX-License-Identifier: GPL-2.0 */ 2#ifndef _ASM_ARM_SWIOTLB_XEN_H 3#define _ASM_ARM_SWIOTLB_XEN_H 4 5#include <xen/features.h> 6#include <xen/xen.h> 7 8static inline int xen_swiotlb_detect(void) 9{ 10 if (!xen_domain()) 11 return 0; 12 if (xen_feature(XENFEAT_direct_mapped)) 13 return 1; 14 /* legacy case */ 15 if (!xen_feature(XENFEAT_not_direct_mapped) && xen_initial_domain()) 16 return 1; 17 return 0; 18} 19 20#endif /* _ASM_ARM_SWIOTLB_XEN_H */