\_SB_.PCI0.S09_
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     GˆÈÐƒx"Ç¾Î º    G/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
/*
 * Userspace interfaces for /dev/mshv* devices and derived fds
 *
 * This file is divided into sections containing data structures and IOCTLs for
 * a particular set of related devices or derived file descriptors.
 *
 * The IOCTL definitions are at the end of each section. They are grouped by
 * device/fd, so that new IOCTLs can easily be added with a monotonically
 * increasing number.
 */
#ifndef _LINUX_MSHV_H
#define _LINUX_MSHV_H

#include <linux/types.h>

#define MSHV_IOCTL	0xB8

/*
 *******************************************
 * Entry point to main VMM APIs: /dev/mshv *
 *******************************************
 */

enum {
	MSHV_PT_BIT_LAPIC,
	MSHV_PT_BIT_X2APIC,
	MSHV_PT_BIT_GPA_SUPER_PAGES,
	MSHV_PT_BIT_COUNT,
};

#define MSHV_PT_FLAGS_MASK ((1 << MSHV_PT_BIT_COUNT) - 1)

enum {
	MSHV_PT_ISOLATION_NONE,
	MSHV_PT_ISOLATION_COUNT,
};

/**
 * struct mshv_create_partition - arguments for MSHV_CREATE_PARTITION
 * @pt_flags: Bitmask of 1 << MSHV_PT_BIT_*
 * @pt_isolation: MSHV_PT_ISOLATION_*
 *
 * Returns a file descriptor to act as a handle to a guest partition.
 * At this point the partition is not yet initialized in the hypervisor.
 * Some operations must be done with the partition in this state, e.g. setting
 * so-called "early" partition properties. The partition can then be
 * initialized with MSHV_INITIALIZE_PARTITION.
 */
struct mshv_create_partition {
	__u64 pt_flags;
	__u64 pt_isolation;
};

/* /dev/mshv */
#define MSHV_CREATE_PARTITION	_IOW(MSHV_IOCTL, 0x00, struct mshv_create_partition)

/*
 ************************
 * Child partition APIs *
 ************************
 */

struct mshv_create_vp {
	__u32 vp_index;
};

enum {
	MSHV_SET_MEM_BIT_WRITABLE,
	MSHV_SET_MEM_BIT_EXECUTABLE,
	MSHV_SET_MEM_BIT_UNMAP,
	MSHV_SET_MEM_BIT_COUNT
};

#define MSHV_SET_MEM_FLAGS_MASK ((1 << MSHV_SET_MEM_BIT_COUNT) - 1)

/* The hypervisor's "native" page size */
#define MSHV_HV_PAGE_SIZE	0x1000

/**
 * struct mshv_user_mem_region - arguments for MSHV_SET_GUEST_MEMORY
 * @size: Size of the memory region (bytes). Must be aligned to
 *        MSHV_HV_PAGE_SIZE
 * @guest_pfn: Base guest page number to map
 * @userspace_addr: Base address of userspace memory. Must be aligned to
 *                  MSHV_HV_PAGE_SIZE
 * @flags: Bitmask of 1 << MSHV_SET_MEM_BIT_*. If (1 << MSHV_SET_MEM_BIT_UNMAP)
 *         is set, ignore other bits.
 * @rsvd: MBZ
 *
 * Map or unmap a region of userspace memory to Guest Physical Addresses (GPA).
 * Mappings can't overlap in GPA space or userspace.
 * To unmap, these fields must match an existing mapping.
 */
struct mshv_user_mem_region {
	__u64 size;
	__u64 guest_pfn;
	__u64 userspace_addr;
	__u8 flags;
	__u8 rsvd[7];
};

enum {
	MSHV_IRQFD_BIT_DEASSIGN,
	MSHV_IRQFD_BIT_RESAMPLE,
	MSHV_IRQFD_BIT_COUNT,
};

#define MSHV_IRQFD_FLAGS_MASK	((1 << MSHV_IRQFD_BIT_COUNT) - 1)

struct mshv_user_irqfd {
	__s32 fd;
	__s32 resamplefd;
	__u32 gsi;
	__u32 flags;
};

enum {
	MSHV_IOEVENTFD_BIT_DATAMATCH,
	MSHV_IOEVENTFD_BIT_PIO,
	MSHV_IOEVENTFD_BIT_DEASSIGN,
	MSHV_IOEVENTFD_BIT_COUNT,
};

#define MSHV_IOEVENTFD_FLAGS_MASK	((1 << MSHV_IOEVENTFD_BIT_COUNT) - 1)

struct mshv_user_ioeventfd {
	__u6