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4cd481f68d
linux-next/include/linux/kvm.h
Jan Kiszka 4cd481f68d KVM: Fix overlapping check for memory slots 
When checking for overlapping slots on registration of a new one, kvm
currently also considers zero-length (ie. deleted) slots and rejects
requests incorrectly. This finally denies user space from joining slots.
Fix the check by skipping deleted slots and advertise this via a
KVM_CAP_JOIN_MEMORY_REGIONS_WORKS.

Cc: stable@kernel.org
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2009-04-22 13:52:09 +03:00

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#ifndef __LINUX_KVM_H
#define __LINUX_KVM_H
/*
* Userspace interface for /dev/kvm - kernel based virtual machine
*
* Note: you must update KVM_API_VERSION if you change this interface.
*/
#include <linux/types.h>
#include <linux/compiler.h>
#include <linux/ioctl.h>
#include <asm/kvm.h>
#define KVM_API_VERSION 12
/* for KVM_TRACE_ENABLE */
struct kvm_user_trace_setup {
__u32 buf_size; /* sub_buffer size of each per-cpu */
__u32 buf_nr; /* the number of sub_buffers of each per-cpu */
};
/* for KVM_CREATE_MEMORY_REGION */
struct kvm_memory_region {
__u32 slot;
__u32 flags;
__u64 guest_phys_addr;
__u64 memory_size; /* bytes */
};
/* for KVM_SET_USER_MEMORY_REGION */
struct kvm_userspace_memory_region {
__u32 slot;
__u32 flags;
__u64 guest_phys_addr;
__u64 memory_size; /* bytes */
__u64 userspace_addr; /* start of the userspace allocated memory */
};
/* for kvm_memory_region::flags */
#define KVM_MEM_LOG_DIRTY_PAGES 1UL
/* for KVM_IRQ_LINE */
struct kvm_irq_level {
/*
* ACPI gsi notion of irq.
* For IA-64 (APIC model) IOAPIC0: irq 0-23; IOAPIC1: irq 24-47..
* For X86 (standard AT mode) PIC0/1: irq 0-15. IOAPIC0: 0-23..
*/
union {
__u32 irq;
__s32 status;
};
__u32 level;
};
struct kvm_irqchip {
__u32 chip_id;
__u32 pad;
union {
char dummy[512]; /* reserving space */
#ifdef __KVM_HAVE_PIT
struct kvm_pic_state pic;
#endif
#ifdef __KVM_HAVE_IOAPIC
struct kvm_ioapic_state ioapic;
#endif
} chip;
};
#define KVM_EXIT_UNKNOWN 0
#define KVM_EXIT_EXCEPTION 1
#define KVM_EXIT_IO 2
#define KVM_EXIT_HYPERCALL 3
#define KVM_EXIT_DEBUG 4
#define KVM_EXIT_HLT 5
#define KVM_EXIT_MMIO 6
#define KVM_EXIT_IRQ_WINDOW_OPEN 7
#define KVM_EXIT_SHUTDOWN 8
#define KVM_EXIT_FAIL_ENTRY 9
#define KVM_EXIT_INTR 10
#define KVM_EXIT_SET_TPR 11
#define KVM_EXIT_TPR_ACCESS 12
#define KVM_EXIT_S390_SIEIC 13
#define KVM_EXIT_S390_RESET 14
#define KVM_EXIT_DCR 15
#define KVM_EXIT_NMI 16
/* for KVM_RUN, returned by mmap(vcpu_fd, offset=0) */
struct kvm_run {
/* in */
__u8 request_interrupt_window;
__u8 padding1[7];
/* out */
__u32 exit_reason;
__u8 ready_for_interrupt_injection;
__u8 if_flag;
__u8 padding2[2];
/* in (pre_kvm_run), out (post_kvm_run) */
__u64 cr8;
__u64 apic_base;
union {
/* KVM_EXIT_UNKNOWN */
struct {
__u64 hardware_exit_reason;
} hw;
/* KVM_EXIT_FAIL_ENTRY */
struct {
__u64 hardware_entry_failure_reason;
} fail_entry;
/* KVM_EXIT_EXCEPTION */
struct {
__u32 exception;
__u32 error_code;
} ex;
/* KVM_EXIT_IO */
struct kvm_io {
#define KVM_EXIT_IO_IN 0
#define KVM_EXIT_IO_OUT 1
__u8 direction;
__u8 size; /* bytes */
__u16 port;
__u32 count;
__u64 data_offset; /* relative to kvm_run start */
} io;
struct {
struct kvm_debug_exit_arch arch;
} debug;
/* KVM_EXIT_MMIO */
struct {
__u64 phys_addr;
__u8 data[8];
__u32 len;
__u8 is_write;
} mmio;
/* KVM_EXIT_HYPERCALL */
struct {
__u64 nr;
__u64 args[6];
__u64 ret;
__u32 longmode;
__u32 pad;
} hypercall;
/* KVM_EXIT_TPR_ACCESS */
struct {
__u64 rip;
__u32 is_write;
__u32 pad;
} tpr_access;
/* KVM_EXIT_S390_SIEIC */
struct {
__u8 icptcode;
__u64 mask; /* psw upper half */
__u64 addr; /* psw lower half */
__u16 ipa;
__u32 ipb;
} s390_sieic;
/* KVM_EXIT_S390_RESET */
#define KVM_S390_RESET_POR 1
#define KVM_S390_RESET_CLEAR 2
#define KVM_S390_RESET_SUBSYSTEM 4
#define KVM_S390_RESET_CPU_INIT 8
#define KVM_S390_RESET_IPL 16
__u64 s390_reset_flags;
/* KVM_EXIT_DCR */
struct {
__u32 dcrn;
__u32 data;
__u8 is_write;
} dcr;
/* Fix the size of the union. */
char padding[256];
};
};
/* for KVM_REGISTER_COALESCED_MMIO / KVM_UNREGISTER_COALESCED_MMIO */
struct kvm_coalesced_mmio_zone {
__u64 addr;
__u32 size;
__u32 pad;
};
struct kvm_coalesced_mmio {
__u64 phys_addr;
__u32 len;
__u32 pad;
__u8 data[8];
};
struct kvm_coalesced_mmio_ring {
__u32 first, last;
struct kvm_coalesced_mmio coalesced_mmio[0];
};
#define KVM_COALESCED_MMIO_MAX \
((PAGE_SIZE - sizeof(struct kvm_coalesced_mmio_ring)) / \
sizeof(struct kvm_coalesced_mmio))
/* for KVM_TRANSLATE */
struct kvm_translation {
/* in */
__u64 linear_address;
/* out */
__u64 physical_address;
__u8 valid;
__u8 writeable;
__u8 usermode;
__u8 pad[5];
};
/* for KVM_INTERRUPT */
struct kvm_interrupt {
/* in */
__u32 irq;
};
/* for KVM_GET_DIRTY_LOG */
struct kvm_dirty_log {
__u32 slot;
__u32 padding;
union {
void __user *dirty_bitmap; /* one bit per page */
__u64 padding;
};
};
/* for KVM_SET_SIGNAL_MASK */
struct kvm_signal_mask {
__u32 len;
__u8 sigset[0];
};
/* for KVM_TPR_ACCESS_REPORTING */
struct kvm_tpr_access_ctl {
__u32 enabled;
__u32 flags;
__u32 reserved[8];
};
/* for KVM_SET_VAPIC_ADDR */
struct kvm_vapic_addr {
__u64 vapic_addr;
};
/* for KVM_SET_MPSTATE */
#define KVM_MP_STATE_RUNNABLE 0
#define KVM_MP_STATE_UNINITIALIZED 1
#define KVM_MP_STATE_INIT_RECEIVED 2
#define KVM_MP_STATE_HALTED 3
#define KVM_MP_STATE_SIPI_RECEIVED 4
struct kvm_mp_state {
__u32 mp_state;
};
struct kvm_s390_psw {
__u64 mask;
__u64 addr;
};
/* valid values for type in kvm_s390_interrupt */
#define KVM_S390_SIGP_STOP 0xfffe0000u
#define KVM_S390_PROGRAM_INT 0xfffe0001u
#define KVM_S390_SIGP_SET_PREFIX 0xfffe0002u
#define KVM_S390_RESTART 0xfffe0003u
#define KVM_S390_INT_VIRTIO 0xffff2603u
#define KVM_S390_INT_SERVICE 0xffff2401u
#define KVM_S390_INT_EMERGENCY 0xffff1201u
struct kvm_s390_interrupt {
__u32 type;
__u32 parm;
__u64 parm64;
};
/* for KVM_SET_GUEST_DEBUG */
#define KVM_GUESTDBG_ENABLE 0x00000001
#define KVM_GUESTDBG_SINGLESTEP 0x00000002
struct kvm_guest_debug {
__u32 control;
__u32 pad;
struct kvm_guest_debug_arch arch;
};
#define KVM_TRC_SHIFT 16
/*
* kvm trace categories
*/
#define KVM_TRC_ENTRYEXIT (1 << KVM_TRC_SHIFT)
#define KVM_TRC_HANDLER (1 << (KVM_TRC_SHIFT + 1)) /* only 12 bits */
/*
* kvm trace action
*/
#define KVM_TRC_VMENTRY (KVM_TRC_ENTRYEXIT + 0x01)
#define KVM_TRC_VMEXIT (KVM_TRC_ENTRYEXIT + 0x02)
#define KVM_TRC_PAGE_FAULT (KVM_TRC_HANDLER + 0x01)
#define KVM_TRC_HEAD_SIZE 12
#define KVM_TRC_CYCLE_SIZE 8
#define KVM_TRC_EXTRA_MAX 7
/* This structure represents a single trace buffer record. */
struct kvm_trace_rec {
/* variable rec_val
* is split into:
* bits 0 - 27 -> event id
* bits 28 -30 -> number of extra data args of size u32
* bits 31 -> binary indicator for if tsc is in record
*/
__u32 rec_val;
__u32 pid;
__u32 vcpu_id;
union {
struct {
__u64 timestamp;
__u32 extra_u32[KVM_TRC_EXTRA_MAX];
} __attribute__((packed)) timestamp;
struct {
__u32 extra_u32[KVM_TRC_EXTRA_MAX];
} notimestamp;
} u;
};
#define TRACE_REC_EVENT_ID(val) \
(0x0fffffff & (val))
#define TRACE_REC_NUM_DATA_ARGS(val) \
(0x70000000 & ((val) << 28))
#define TRACE_REC_TCS(val) \
(0x80000000 & ((val) << 31))
#define KVMIO 0xAE
/*
* ioctls for /dev/kvm fds:
*/
#define KVM_GET_API_VERSION _IO(KVMIO, 0x00)
#define KVM_CREATE_VM _IO(KVMIO, 0x01) /* returns a VM fd */
#define KVM_GET_MSR_INDEX_LIST _IOWR(KVMIO, 0x02, struct kvm_msr_list)
#define KVM_S390_ENABLE_SIE _IO(KVMIO, 0x06)
/*
* Check if a kvm extension is available. Argument is extension number,
* return is 1 (yes) or 0 (no, sorry).
*/
#define KVM_CHECK_EXTENSION _IO(KVMIO, 0x03)
/*
* Get size for mmap(vcpu_fd)
*/
#define KVM_GET_VCPU_MMAP_SIZE _IO(KVMIO, 0x04) /* in bytes */
#define KVM_GET_SUPPORTED_CPUID _IOWR(KVMIO, 0x05, struct kvm_cpuid2)
/*
* ioctls for kvm trace
*/
#define KVM_TRACE_ENABLE _IOW(KVMIO, 0x06, struct kvm_user_trace_setup)
#define KVM_TRACE_PAUSE _IO(KVMIO, 0x07)
#define KVM_TRACE_DISABLE _IO(KVMIO, 0x08)
/*
* Extension capability list.
*/
#define KVM_CAP_IRQCHIP 0
#define KVM_CAP_HLT 1
#define KVM_CAP_MMU_SHADOW_CACHE_CONTROL 2
#define KVM_CAP_USER_MEMORY 3
#define KVM_CAP_SET_TSS_ADDR 4
#define KVM_CAP_VAPIC 6
#define KVM_CAP_EXT_CPUID 7
#define KVM_CAP_CLOCKSOURCE 8
#define KVM_CAP_NR_VCPUS 9 /* returns max vcpus per vm */
#define KVM_CAP_NR_MEMSLOTS 10 /* returns max memory slots per vm */
#define KVM_CAP_PIT 11
#define KVM_CAP_NOP_IO_DELAY 12
#define KVM_CAP_PV_MMU 13
#define KVM_CAP_MP_STATE 14
#define KVM_CAP_COALESCED_MMIO 15
#define KVM_CAP_SYNC_MMU 16 /* Changes to host mmap are reflected in guest */
#ifdef __KVM_HAVE_DEVICE_ASSIGNMENT
#define KVM_CAP_DEVICE_ASSIGNMENT 17
#endif
#define KVM_CAP_IOMMU 18
#ifdef __KVM_HAVE_MSI
#define KVM_CAP_DEVICE_MSI 20
#endif
/* Bug in KVM_SET_USER_MEMORY_REGION fixed: */
#define KVM_CAP_DESTROY_MEMORY_REGION_WORKS 21
#ifdef __KVM_HAVE_USER_NMI
#define KVM_CAP_USER_NMI 22
#endif
#ifdef __KVM_HAVE_GUEST_DEBUG
#define KVM_CAP_SET_GUEST_DEBUG 23
#endif
#ifdef __KVM_HAVE_PIT
#define KVM_CAP_REINJECT_CONTROL 24
#endif
#ifdef __KVM_HAVE_IOAPIC
#define KVM_CAP_IRQ_ROUTING 25
#endif
#define KVM_CAP_IRQ_INJECT_STATUS 26
#ifdef __KVM_HAVE_DEVICE_ASSIGNMENT
#define KVM_CAP_DEVICE_DEASSIGNMENT 27
#endif
/* Another bug in KVM_SET_USER_MEMORY_REGION fixed: */
#define KVM_CAP_JOIN_MEMORY_REGIONS_WORKS 30
#ifdef KVM_CAP_IRQ_ROUTING
struct kvm_irq_routing_irqchip {
__u32 irqchip;
__u32 pin;
};
struct kvm_irq_routing_msi {
__u32 address_lo;
__u32 address_hi;
__u32 data;
__u32 pad;
};
/* gsi routing entry types */
#define KVM_IRQ_ROUTING_IRQCHIP 1
#define KVM_IRQ_ROUTING_MSI 2
struct kvm_irq_routing_entry {
__u32 gsi;
__u32 type;
__u32 flags;
__u32 pad;
union {
struct kvm_irq_routing_irqchip irqchip;
struct kvm_irq_routing_msi msi;
__u32 pad[8];
} u;
};
struct kvm_irq_routing {
__u32 nr;
__u32 flags;
struct kvm_irq_routing_entry entries[0];
};
#endif
/*
* ioctls for VM fds
*/
#define KVM_SET_MEMORY_REGION _IOW(KVMIO, 0x40, struct kvm_memory_region)
#define KVM_SET_NR_MMU_PAGES _IO(KVMIO, 0x44)
#define KVM_GET_NR_MMU_PAGES _IO(KVMIO, 0x45)
#define KVM_SET_USER_MEMORY_REGION _IOW(KVMIO, 0x46,\
struct kvm_userspace_memory_region)
#define KVM_SET_TSS_ADDR _IO(KVMIO, 0x47)
/*
* KVM_CREATE_VCPU receives as a parameter the vcpu slot, and returns
* a vcpu fd.
*/
#define KVM_CREATE_VCPU _IO(KVMIO, 0x41)
#define KVM_GET_DIRTY_LOG _IOW(KVMIO, 0x42, struct kvm_dirty_log)
#define KVM_SET_MEMORY_ALIAS _IOW(KVMIO, 0x43, struct kvm_memory_alias)
/* Device model IOC */
#define KVM_CREATE_IRQCHIP _IO(KVMIO, 0x60)
#define KVM_IRQ_LINE _IOW(KVMIO, 0x61, struct kvm_irq_level)
#define KVM_GET_IRQCHIP _IOWR(KVMIO, 0x62, struct kvm_irqchip)
#define KVM_SET_IRQCHIP _IOR(KVMIO, 0x63, struct kvm_irqchip)
#define KVM_CREATE_PIT _IO(KVMIO, 0x64)
#define KVM_GET_PIT _IOWR(KVMIO, 0x65, struct kvm_pit_state)
#define KVM_SET_PIT _IOR(KVMIO, 0x66, struct kvm_pit_state)
#define KVM_IRQ_LINE_STATUS _IOWR(KVMIO, 0x67, struct kvm_irq_level)
#define KVM_REGISTER_COALESCED_MMIO \
_IOW(KVMIO, 0x67, struct kvm_coalesced_mmio_zone)
#define KVM_UNREGISTER_COALESCED_MMIO \
_IOW(KVMIO, 0x68, struct kvm_coalesced_mmio_zone)
#define KVM_ASSIGN_PCI_DEVICE _IOR(KVMIO, 0x69, \
struct kvm_assigned_pci_dev)
#define KVM_SET_GSI_ROUTING _IOW(KVMIO, 0x6a, struct kvm_irq_routing)
#define KVM_ASSIGN_IRQ _IOR(KVMIO, 0x70, \
struct kvm_assigned_irq)
#define KVM_REINJECT_CONTROL _IO(KVMIO, 0x71)
#define KVM_DEASSIGN_PCI_DEVICE _IOW(KVMIO, 0x72, \
struct kvm_assigned_pci_dev)
/*
* ioctls for vcpu fds
*/
#define KVM_RUN _IO(KVMIO, 0x80)
#define KVM_GET_REGS _IOR(KVMIO, 0x81, struct kvm_regs)
#define KVM_SET_REGS _IOW(KVMIO, 0x82, struct kvm_regs)
#define KVM_GET_SREGS _IOR(KVMIO, 0x83, struct kvm_sregs)
#define KVM_SET_SREGS _IOW(KVMIO, 0x84, struct kvm_sregs)
#define KVM_TRANSLATE _IOWR(KVMIO, 0x85, struct kvm_translation)
#define KVM_INTERRUPT _IOW(KVMIO, 0x86, struct kvm_interrupt)
/* KVM_DEBUG_GUEST is no longer supported, use KVM_SET_GUEST_DEBUG instead */
#define KVM_DEBUG_GUEST __KVM_DEPRECATED_DEBUG_GUEST
#define KVM_GET_MSRS _IOWR(KVMIO, 0x88, struct kvm_msrs)
#define KVM_SET_MSRS _IOW(KVMIO, 0x89, struct kvm_msrs)
#define KVM_SET_CPUID _IOW(KVMIO, 0x8a, struct kvm_cpuid)
#define KVM_SET_SIGNAL_MASK _IOW(KVMIO, 0x8b, struct kvm_signal_mask)
#define KVM_GET_FPU _IOR(KVMIO, 0x8c, struct kvm_fpu)
#define KVM_SET_FPU _IOW(KVMIO, 0x8d, struct kvm_fpu)
#define KVM_GET_LAPIC _IOR(KVMIO, 0x8e, struct kvm_lapic_state)
#define KVM_SET_LAPIC _IOW(KVMIO, 0x8f, struct kvm_lapic_state)
#define KVM_SET_CPUID2 _IOW(KVMIO, 0x90, struct kvm_cpuid2)
#define KVM_GET_CPUID2 _IOWR(KVMIO, 0x91, struct kvm_cpuid2)
/* Available with KVM_CAP_VAPIC */
#define KVM_TPR_ACCESS_REPORTING _IOWR(KVMIO, 0x92, struct kvm_tpr_access_ctl)
/* Available with KVM_CAP_VAPIC */
#define KVM_SET_VAPIC_ADDR _IOW(KVMIO, 0x93, struct kvm_vapic_addr)
/* valid for virtual machine (for floating interrupt)_and_ vcpu */
#define KVM_S390_INTERRUPT _IOW(KVMIO, 0x94, struct kvm_s390_interrupt)
/* store status for s390 */
#define KVM_S390_STORE_STATUS_NOADDR (-1ul)
#define KVM_S390_STORE_STATUS_PREFIXED (-2ul)
#define KVM_S390_STORE_STATUS _IOW(KVMIO, 0x95, unsigned long)
/* initial ipl psw for s390 */
#define KVM_S390_SET_INITIAL_PSW _IOW(KVMIO, 0x96, struct kvm_s390_psw)
/* initial reset for s390 */
#define KVM_S390_INITIAL_RESET _IO(KVMIO, 0x97)
#define KVM_GET_MP_STATE _IOR(KVMIO, 0x98, struct kvm_mp_state)
#define KVM_SET_MP_STATE _IOW(KVMIO, 0x99, struct kvm_mp_state)
/* Available with KVM_CAP_NMI */
#define KVM_NMI _IO(KVMIO, 0x9a)
/* Available with KVM_CAP_SET_GUEST_DEBUG */
#define KVM_SET_GUEST_DEBUG _IOW(KVMIO, 0x9b, struct kvm_guest_debug)
/*
* Deprecated interfaces
*/
struct kvm_breakpoint {
__u32 enabled;
__u32 padding;
__u64 address;
};
struct kvm_debug_guest {
__u32 enabled;
__u32 pad;
struct kvm_breakpoint breakpoints[4];
__u32 singlestep;
};
#define __KVM_DEPRECATED_DEBUG_GUEST _IOW(KVMIO, 0x87, struct kvm_debug_guest)
#define KVM_IA64_VCPU_GET_STACK _IOR(KVMIO, 0x9a, void *)
#define KVM_IA64_VCPU_SET_STACK _IOW(KVMIO, 0x9b, void *)
#define KVM_TRC_INJ_VIRQ (KVM_TRC_HANDLER + 0x02)
#define KVM_TRC_REDELIVER_EVT (KVM_TRC_HANDLER + 0x03)
#define KVM_TRC_PEND_INTR (KVM_TRC_HANDLER + 0x04)
#define KVM_TRC_IO_READ (KVM_TRC_HANDLER + 0x05)
#define KVM_TRC_IO_WRITE (KVM_TRC_HANDLER + 0x06)
#define KVM_TRC_CR_READ (KVM_TRC_HANDLER + 0x07)
#define KVM_TRC_CR_WRITE (KVM_TRC_HANDLER + 0x08)
#define KVM_TRC_DR_READ (KVM_TRC_HANDLER + 0x09)
#define KVM_TRC_DR_WRITE (KVM_TRC_HANDLER + 0x0A)
#define KVM_TRC_MSR_READ (KVM_TRC_HANDLER + 0x0B)
#define KVM_TRC_MSR_WRITE (KVM_TRC_HANDLER + 0x0C)
#define KVM_TRC_CPUID (KVM_TRC_HANDLER + 0x0D)
#define KVM_TRC_INTR (KVM_TRC_HANDLER + 0x0E)
#define KVM_TRC_NMI (KVM_TRC_HANDLER + 0x0F)
#define KVM_TRC_VMMCALL (KVM_TRC_HANDLER + 0x10)
#define KVM_TRC_HLT (KVM_TRC_HANDLER + 0x11)
#define KVM_TRC_CLTS (KVM_TRC_HANDLER + 0x12)
#define KVM_TRC_LMSW (KVM_TRC_HANDLER + 0x13)
#define KVM_TRC_APIC_ACCESS (KVM_TRC_HANDLER + 0x14)
#define KVM_TRC_TDP_FAULT (KVM_TRC_HANDLER + 0x15)
#define KVM_TRC_GTLB_WRITE (KVM_TRC_HANDLER + 0x16)
#define KVM_TRC_STLB_WRITE (KVM_TRC_HANDLER + 0x17)
#define KVM_TRC_STLB_INVAL (KVM_TRC_HANDLER + 0x18)
#define KVM_TRC_PPC_INSTR (KVM_TRC_HANDLER + 0x19)
struct kvm_assigned_pci_dev {
__u32 assigned_dev_id;
__u32 busnr;
__u32 devfn;
__u32 flags;
union {
__u32 reserved[12];
};
};
struct kvm_assigned_irq {
__u32 assigned_dev_id;
__u32 host_irq;
__u32 guest_irq;
__u32 flags;
union {
struct {
__u32 addr_lo;
__u32 addr_hi;
__u32 data;
} guest_msi;
__u32 reserved[12];
};
};
#define KVM_DEV_ASSIGN_ENABLE_IOMMU (1 << 0)
#define KVM_DEV_IRQ_ASSIGN_MSI_ACTION KVM_DEV_IRQ_ASSIGN_ENABLE_MSI
#define KVM_DEV_IRQ_ASSIGN_ENABLE_MSI (1 << 0)
#endif
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