21 строка
431 B
C
21 строка
431 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_ARM_SWIOTLB_XEN_H
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#define _ASM_ARM_SWIOTLB_XEN_H
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#include <xen/features.h>
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#include <xen/xen.h>
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static inline int xen_swiotlb_detect(void)
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{
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if (!xen_domain())
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return 0;
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if (xen_feature(XENFEAT_direct_mapped))
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return 1;
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/* legacy case */
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if (!xen_feature(XENFEAT_not_direct_mapped) && xen_initial_domain())
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return 1;
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return 0;
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}
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#endif /* _ASM_ARM_SWIOTLB_XEN_H */
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