1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef _XEN_XEN_H
 3#define _XEN_XEN_H
 4
 5#include <linux/types.h>
 6
 7enum xen_domain_type {
 8	XEN_NATIVE,		/* running on bare hardware    */
 9	XEN_PV_DOMAIN,		/* running in a PV domain      */
10	XEN_HVM_DOMAIN,		/* running in a Xen hvm domain */
11};
12
13#ifdef CONFIG_XEN
14extern enum xen_domain_type xen_domain_type;
15#else
16#define xen_domain_type		XEN_NATIVE
17#endif
18
19#ifdef CONFIG_XEN_PVH
20extern bool xen_pvh;
21#else
22#define xen_pvh			0
23#endif
24
25#define xen_domain()		(xen_domain_type != XEN_NATIVE)
26#define xen_pv_domain()		(xen_domain_type == XEN_PV_DOMAIN)
27#define xen_hvm_domain()	(xen_domain_type == XEN_HVM_DOMAIN)
28#define xen_pvh_domain()	(xen_pvh)
29
30extern uint32_t xen_start_flags;
31
32#include <xen/interface/hvm/start_info.h>
33extern struct hvm_start_info pvh_start_info;
34
35#ifdef CONFIG_XEN_DOM0
36#include <xen/interface/xen.h>
37#include <asm/xen/hypervisor.h>
38
39#define xen_initial_domain()	(xen_domain() && \
40				 (xen_start_flags & SIF_INITDOMAIN))
41#else  /* !CONFIG_XEN_DOM0 */
42#define xen_initial_domain()	(0)
43#endif	/* CONFIG_XEN_DOM0 */
44
45struct bio_vec;
46struct page;
47
48bool xen_biovec_phys_mergeable(const struct bio_vec *vec1,
49		const struct page *page);
50
51#if defined(CONFIG_MEMORY_HOTPLUG) && defined(CONFIG_XEN_BALLOON)
52extern u64 xen_saved_max_mem_size;
53#endif
54
55#ifdef CONFIG_XEN_UNPOPULATED_ALLOC
56int xen_alloc_unpopulated_pages(unsigned int nr_pages, struct page **pages);
57void xen_free_unpopulated_pages(unsigned int nr_pages, struct page **pages);
58#include <linux/ioport.h>
59int arch_xen_unpopulated_init(struct resource **res);
60#else
61#include <xen/balloon.h>
62static inline int xen_alloc_unpopulated_pages(unsigned int nr_pages,
63		struct page **pages)
64{
65	return xen_alloc_ballooned_pages(nr_pages, pages);
66}
67static inline void xen_free_unpopulated_pages(unsigned int nr_pages,
68		struct page **pages)
69{
70	xen_free_ballooned_pages(nr_pages, pages);
71}
72#endif
73
74#endif	/* _XEN_XEN_H */

 1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef _XEN_XEN_H
 3#define _XEN_XEN_H
 4
 
 
 5enum xen_domain_type {
 6	XEN_NATIVE,		/* running on bare hardware    */
 7	XEN_PV_DOMAIN,		/* running in a PV domain      */
 8	XEN_HVM_DOMAIN,		/* running in a Xen hvm domain */
 9};
10
11#ifdef CONFIG_XEN
12extern enum xen_domain_type xen_domain_type;
13#else
14#define xen_domain_type		XEN_NATIVE
15#endif
16
17#ifdef CONFIG_XEN_PVH
18extern bool xen_pvh;
19#else
20#define xen_pvh			0
21#endif
22
23#define xen_domain()		(xen_domain_type != XEN_NATIVE)
24#define xen_pv_domain()		(xen_domain_type == XEN_PV_DOMAIN)
25#define xen_hvm_domain()	(xen_domain_type == XEN_HVM_DOMAIN)
26#define xen_pvh_domain()	(xen_pvh)
27
 
 
 
 
 
28#ifdef CONFIG_XEN_DOM0
29#include <xen/interface/xen.h>
30#include <asm/xen/hypervisor.h>
31
32#define xen_initial_domain()	(xen_domain() && \
33				 xen_start_info && xen_start_info->flags & SIF_INITDOMAIN)
34#else  /* !CONFIG_XEN_DOM0 */
35#define xen_initial_domain()	(0)
36#endif	/* CONFIG_XEN_DOM0 */
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
37
38#endif	/* _XEN_XEN_H */