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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _XEN_XEN_H
#define _XEN_XEN_H
#include <linux/types.h>
enum xen_domain_type {
XEN_NATIVE, /* running on bare hardware */
XEN_PV_DOMAIN, /* running in a PV domain */
XEN_HVM_DOMAIN, /* running in a Xen hvm domain */
};
#ifdef CONFIG_XEN
extern enum xen_domain_type xen_domain_type;
#else
#define xen_domain_type XEN_NATIVE
#endif
#ifdef CONFIG_XEN_PVH
extern bool xen_pvh;
#else
#define xen_pvh 0
#endif
#define xen_domain() (xen_domain_type != XEN_NATIVE)
#define xen_pv_domain() (xen_domain_type == XEN_PV_DOMAIN)
#define xen_hvm_domain() (xen_domain_type == XEN_HVM_DOMAIN)
#define xen_pvh_domain() (xen_pvh)
extern uint32_t xen_start_flags;
#ifdef CONFIG_XEN_PV
extern bool xen_pv_pci_possible;
#else
#define xen_pv_pci_possible 0
#endif
#include <xen/interface/hvm/start_info.h>
extern struct hvm_start_info pvh_start_info;
void xen_prepare_pvh(void);
struct pt_regs;
void xen_pv_evtchn_do_upcall(struct pt_regs *regs);
#ifdef CONFIG_XEN_DOM0
#include <xen/interface/xen.h>
#include <asm/xen/hypervisor.h>
#define xen_initial_domain() (xen_domain() && \
(xen_start_flags & SIF_INITDOMAIN))
#else /* !CONFIG_XEN_DOM0 */
#define xen_initial_domain() (0)
#endif /* CONFIG_XEN_DOM0 */
struct bio_vec;
struct page;
bool xen_biovec_phys_mergeable(const struct bio_vec *vec1,
const struct page *page);
#if defined(CONFIG_MEMORY_HOTPLUG) && defined(CONFIG_XEN_BALLOON)
extern u64 xen_saved_max_mem_size;
#endif
#ifdef CONFIG_XEN_UNPOPULATED_ALLOC
int xen_alloc_unpopulated_pages(unsigned int nr_pages, struct page **pages);
void xen_free_unpopulated_pages(unsigned int nr_pages, struct page **pages);
#include <linux/ioport.h>
int arch_xen_unpopulated_init(struct resource **res);
#else
#include <xen/balloon.h>
static inline int xen_alloc_unpopulated_pages(unsigned int nr_pages,
struct page **pages)
{
return xen_alloc_ballooned_pages(nr_pages, pages);
}
static inline void xen_free_unpopulated_pages(unsigned int nr_pages,
struct page **pages)
{
xen_free_ballooned_pages(nr_pages, pages);
}
#endif
#if defined(CONFIG_XEN_DOM0) && defined(CONFIG_ACPI) && defined(CONFIG_X86)
bool __init xen_processor_present(uint32_t acpi_id);
#else
#include <linux/bug.h>
static inline bool xen_processor_present(uint32_t acpi_id)
{
BUG();
return false;
}
#endif
#endif /* _XEN_XEN_H */