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1/* SPDX-License-Identifier: GPL-2.0 */2#ifndef _XEN_XEN_H3#define _XEN_XEN_H4 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_XEN14extern enum xen_domain_type xen_domain_type;15#else16#define xen_domain_type XEN_NATIVE17#endif18 19#ifdef CONFIG_XEN_PVH20extern bool xen_pvh;21#else22#define xen_pvh 023#endif24 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#ifdef CONFIG_XEN_PV33extern bool xen_pv_pci_possible;34#else35#define xen_pv_pci_possible 036#endif37 38#include <xen/interface/hvm/start_info.h>39extern struct hvm_start_info pvh_start_info;40void xen_prepare_pvh(void);41struct pt_regs;42void xen_pv_evtchn_do_upcall(struct pt_regs *regs);43 44#ifdef CONFIG_XEN_DOM045#include <xen/interface/xen.h>46#include <asm/xen/hypervisor.h>47 48#define xen_initial_domain() (xen_domain() && \49 (xen_start_flags & SIF_INITDOMAIN))50#else /* !CONFIG_XEN_DOM0 */51#define xen_initial_domain() (0)52#endif /* CONFIG_XEN_DOM0 */53 54struct bio_vec;55struct page;56 57bool xen_biovec_phys_mergeable(const struct bio_vec *vec1,58 const struct page *page);59 60#if defined(CONFIG_MEMORY_HOTPLUG) && defined(CONFIG_XEN_BALLOON)61extern u64 xen_saved_max_mem_size;62#endif63 64#ifdef CONFIG_XEN_UNPOPULATED_ALLOC65int xen_alloc_unpopulated_pages(unsigned int nr_pages, struct page **pages);66void xen_free_unpopulated_pages(unsigned int nr_pages, struct page **pages);67#include <linux/ioport.h>68int arch_xen_unpopulated_init(struct resource **res);69#else70#include <xen/balloon.h>71static inline int xen_alloc_unpopulated_pages(unsigned int nr_pages,72 struct page **pages)73{74 return xen_alloc_ballooned_pages(nr_pages, pages);75}76static inline void xen_free_unpopulated_pages(unsigned int nr_pages,77 struct page **pages)78{79 xen_free_ballooned_pages(nr_pages, pages);80}81#endif82 83#if defined(CONFIG_XEN_DOM0) && defined(CONFIG_ACPI) && defined(CONFIG_X86)84bool __init xen_processor_present(uint32_t acpi_id);85#else86#include <linux/bug.h>87static inline bool xen_processor_present(uint32_t acpi_id)88{89 BUG();90 return false;91}92#endif93 94#endif /* _XEN_XEN_H */95