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Linux kernel mirror (for testing)
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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;
34void xen_prepare_pvh(void);
35struct pt_regs;
36void xen_pv_evtchn_do_upcall(struct pt_regs *regs);
37
38#ifdef CONFIG_XEN_DOM0
39#include <xen/interface/xen.h>
40#include <asm/xen/hypervisor.h>
41
42#define xen_initial_domain() (xen_domain() && \
43 (xen_start_flags & SIF_INITDOMAIN))
44#else /* !CONFIG_XEN_DOM0 */
45#define xen_initial_domain() (0)
46#endif /* CONFIG_XEN_DOM0 */
47
48struct bio_vec;
49struct page;
50
51bool xen_biovec_phys_mergeable(const struct bio_vec *vec1,
52 const struct page *page);
53
54#if defined(CONFIG_MEMORY_HOTPLUG) && defined(CONFIG_XEN_BALLOON)
55extern u64 xen_saved_max_mem_size;
56#endif
57
58#ifdef CONFIG_XEN_UNPOPULATED_ALLOC
59int xen_alloc_unpopulated_pages(unsigned int nr_pages, struct page **pages);
60void xen_free_unpopulated_pages(unsigned int nr_pages, struct page **pages);
61#include <linux/ioport.h>
62int arch_xen_unpopulated_init(struct resource **res);
63#else
64#include <xen/balloon.h>
65static inline int xen_alloc_unpopulated_pages(unsigned int nr_pages,
66 struct page **pages)
67{
68 return xen_alloc_ballooned_pages(nr_pages, pages);
69}
70static inline void xen_free_unpopulated_pages(unsigned int nr_pages,
71 struct page **pages)
72{
73 xen_free_ballooned_pages(nr_pages, pages);
74}
75#endif
76
77#if defined(CONFIG_XEN_DOM0) && defined(CONFIG_ACPI) && defined(CONFIG_X86)
78bool __init xen_processor_present(uint32_t acpi_id);
79#else
80#include <linux/bug.h>
81static inline bool xen_processor_present(uint32_t acpi_id)
82{
83 BUG();
84 return false;
85}
86#endif
87
88#endif /* _XEN_XEN_H */