1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * tools/testing/selftests/kvm/include/kvm_util_base.h
5 * Copyright (C) 2018, Google LLC.
7 #ifndef SELFTEST_KVM_UTIL_BASE_H
8 #define SELFTEST_KVM_UTIL_BASE_H
10 #include "test_util.h"
12 #include <linux/compiler.h>
13 #include "linux/hashtable.h"
14 #include "linux/list.h"
15 #include <linux/kernel.h>
16 #include <linux/kvm.h>
17 #include "linux/rbtree.h"
18 #include <linux/types.h>
20 #include <asm/atomic.h>
22 #include <sys/ioctl.h>
24 #include "sparsebit.h"
27 * Provide a version of static_assert() that is guaranteed to have an optional
28 * message param. If _ISOC11_SOURCE is defined, glibc (/usr/include/assert.h)
29 * #undefs and #defines static_assert() as a direct alias to _Static_assert(),
30 * i.e. effectively makes the message mandatory. Many KVM selftests #define
31 * _GNU_SOURCE for various reasons, and _GNU_SOURCE implies _ISOC11_SOURCE. As
32 * a result, static_assert() behavior is non-deterministic and may or may not
33 * require a message depending on #include order.
35 #define __kvm_static_assert(expr, msg, ...) _Static_assert(expr, msg)
36 #define kvm_static_assert(expr, ...) __kvm_static_assert(expr, ##__VA_ARGS__, #expr)
38 #define KVM_DEV_PATH "/dev/kvm"
39 #define KVM_MAX_VCPUS 512
41 #define NSEC_PER_SEC 1000000000L
43 typedef uint64_t vm_paddr_t
; /* Virtual Machine (Guest) physical address */
44 typedef uint64_t vm_vaddr_t
; /* Virtual Machine (Guest) virtual address */
46 struct userspace_mem_region
{
47 struct kvm_userspace_memory_region region
;
48 struct sparsebit
*unused_phy_pages
;
51 enum vm_mem_backing_src_type backing_src_type
;
57 struct rb_node gpa_node
;
58 struct rb_node hva_node
;
59 struct hlist_node slot_node
;
63 struct list_head list
;
69 struct kvm_cpuid2
*cpuid
;
71 struct kvm_dirty_gfn
*dirty_gfns
;
73 uint32_t dirty_gfns_count
;
76 struct userspace_mem_regions
{
77 struct rb_root gpa_tree
;
78 struct rb_root hva_tree
;
79 DECLARE_HASHTABLE(slot_hash
, 9);
82 enum kvm_mem_region_type
{
95 unsigned int pgtable_levels
;
96 unsigned int page_size
;
97 unsigned int page_shift
;
101 struct list_head vcpus
;
102 struct userspace_mem_regions regions
;
103 struct sparsebit
*vpages_valid
;
104 struct sparsebit
*vpages_mapped
;
107 vm_paddr_t ucall_mmio_addr
;
113 uint32_t dirty_ring_size
;
115 /* Cache of information for binary stats interface */
117 struct kvm_stats_header stats_header
;
118 struct kvm_stats_desc
*stats_desc
;
121 * KVM region slots. These are the default memslots used by page
122 * allocators, e.g., lib/elf uses the memslots[MEM_REGION_CODE]
125 uint32_t memslots
[NR_MEM_REGIONS
];
128 struct vcpu_reg_sublist
{
141 struct vcpu_reg_list
{
143 struct vcpu_reg_sublist sublists
[];
146 #define for_each_sublist(c, s) \
147 for ((s) = &(c)->sublists[0]; (s)->regs; ++(s))
149 #define kvm_for_each_vcpu(vm, i, vcpu) \
150 for ((i) = 0; (i) <= (vm)->last_vcpu_id; (i)++) \
151 if (!((vcpu) = vm->vcpus[i])) \
155 struct userspace_mem_region
*
156 memslot2region(struct kvm_vm
*vm
, uint32_t memslot
);
158 static inline struct userspace_mem_region
*vm_get_mem_region(struct kvm_vm
*vm
,
159 enum kvm_mem_region_type type
)
161 assert(type
< NR_MEM_REGIONS
);
162 return memslot2region(vm
, vm
->memslots
[type
]);
165 /* Minimum allocated guest virtual and physical addresses */
166 #define KVM_UTIL_MIN_VADDR 0x2000
167 #define KVM_GUEST_PAGE_TABLE_MIN_PADDR 0x180000
169 #define DEFAULT_GUEST_STACK_VADDR_MIN 0xab6000
170 #define DEFAULT_STACK_PGS 5
181 VM_MODE_PXXV48_4K
, /* For 48bits VA but ANY bits PA */
191 #if defined(__aarch64__)
193 extern enum vm_guest_mode vm_mode_default
;
195 #define VM_MODE_DEFAULT vm_mode_default
196 #define MIN_PAGE_SHIFT 12U
197 #define ptes_per_page(page_size) ((page_size) / 8)
199 #elif defined(__x86_64__)
201 #define VM_MODE_DEFAULT VM_MODE_PXXV48_4K
202 #define MIN_PAGE_SHIFT 12U
203 #define ptes_per_page(page_size) ((page_size) / 8)
205 #elif defined(__s390x__)
207 #define VM_MODE_DEFAULT VM_MODE_P44V64_4K
208 #define MIN_PAGE_SHIFT 12U
209 #define ptes_per_page(page_size) ((page_size) / 16)
211 #elif defined(__riscv)
213 #if __riscv_xlen == 32
214 #error "RISC-V 32-bit kvm selftests not supported"
217 #define VM_MODE_DEFAULT VM_MODE_P40V48_4K
218 #define MIN_PAGE_SHIFT 12U
219 #define ptes_per_page(page_size) ((page_size) / 8)
223 #define MIN_PAGE_SIZE (1U << MIN_PAGE_SHIFT)
224 #define PTES_PER_MIN_PAGE ptes_per_page(MIN_PAGE_SIZE)
226 struct vm_guest_mode_params
{
227 unsigned int pa_bits
;
228 unsigned int va_bits
;
229 unsigned int page_size
;
230 unsigned int page_shift
;
232 extern const struct vm_guest_mode_params vm_guest_mode_params
[];
234 int open_path_or_exit(const char *path
, int flags
);
235 int open_kvm_dev_path_or_exit(void);
237 bool get_kvm_param_bool(const char *param
);
238 bool get_kvm_intel_param_bool(const char *param
);
239 bool get_kvm_amd_param_bool(const char *param
);
241 unsigned int kvm_check_cap(long cap
);
243 static inline bool kvm_has_cap(long cap
)
245 return kvm_check_cap(cap
);
248 #define __KVM_SYSCALL_ERROR(_name, _ret) \
249 "%s failed, rc: %i errno: %i (%s)", (_name), (_ret), errno, strerror(errno)
251 #define __KVM_IOCTL_ERROR(_name, _ret) __KVM_SYSCALL_ERROR(_name, _ret)
252 #define KVM_IOCTL_ERROR(_ioctl, _ret) __KVM_IOCTL_ERROR(#_ioctl, _ret)
254 #define kvm_do_ioctl(fd, cmd, arg) \
256 kvm_static_assert(!_IOC_SIZE(cmd) || sizeof(*arg) == _IOC_SIZE(cmd)); \
257 ioctl(fd, cmd, arg); \
260 #define __kvm_ioctl(kvm_fd, cmd, arg) \
261 kvm_do_ioctl(kvm_fd, cmd, arg)
264 #define _kvm_ioctl(kvm_fd, cmd, name, arg) \
266 int ret = __kvm_ioctl(kvm_fd, cmd, arg); \
268 TEST_ASSERT(!ret, __KVM_IOCTL_ERROR(name, ret)); \
271 #define kvm_ioctl(kvm_fd, cmd, arg) \
272 _kvm_ioctl(kvm_fd, cmd, #cmd, arg)
274 static __always_inline
void static_assert_is_vm(struct kvm_vm
*vm
) { }
276 #define __vm_ioctl(vm, cmd, arg) \
278 static_assert_is_vm(vm); \
279 kvm_do_ioctl((vm)->fd, cmd, arg); \
282 #define _vm_ioctl(vm, cmd, name, arg) \
284 int ret = __vm_ioctl(vm, cmd, arg); \
286 TEST_ASSERT(!ret, __KVM_IOCTL_ERROR(name, ret)); \
289 #define vm_ioctl(vm, cmd, arg) \
290 _vm_ioctl(vm, cmd, #cmd, arg)
293 static __always_inline
void static_assert_is_vcpu(struct kvm_vcpu
*vcpu
) { }
295 #define __vcpu_ioctl(vcpu, cmd, arg) \
297 static_assert_is_vcpu(vcpu); \
298 kvm_do_ioctl((vcpu)->fd, cmd, arg); \
301 #define _vcpu_ioctl(vcpu, cmd, name, arg) \
303 int ret = __vcpu_ioctl(vcpu, cmd, arg); \
305 TEST_ASSERT(!ret, __KVM_IOCTL_ERROR(name, ret)); \
308 #define vcpu_ioctl(vcpu, cmd, arg) \
309 _vcpu_ioctl(vcpu, cmd, #cmd, arg)
312 * Looks up and returns the value corresponding to the capability
313 * (KVM_CAP_*) given by cap.
315 static inline int vm_check_cap(struct kvm_vm
*vm
, long cap
)
317 int ret
= __vm_ioctl(vm
, KVM_CHECK_EXTENSION
, (void *)cap
);
319 TEST_ASSERT(ret
>= 0, KVM_IOCTL_ERROR(KVM_CHECK_EXTENSION
, ret
));
323 static inline int __vm_enable_cap(struct kvm_vm
*vm
, uint32_t cap
, uint64_t arg0
)
325 struct kvm_enable_cap enable_cap
= { .cap
= cap
, .args
= { arg0
} };
327 return __vm_ioctl(vm
, KVM_ENABLE_CAP
, &enable_cap
);
329 static inline void vm_enable_cap(struct kvm_vm
*vm
, uint32_t cap
, uint64_t arg0
)
331 struct kvm_enable_cap enable_cap
= { .cap
= cap
, .args
= { arg0
} };
333 vm_ioctl(vm
, KVM_ENABLE_CAP
, &enable_cap
);
336 void vm_enable_dirty_ring(struct kvm_vm
*vm
, uint32_t ring_size
);
337 const char *vm_guest_mode_string(uint32_t i
);
339 void kvm_vm_free(struct kvm_vm
*vmp
);
340 void kvm_vm_restart(struct kvm_vm
*vmp
);
341 void kvm_vm_release(struct kvm_vm
*vmp
);
342 int kvm_memcmp_hva_gva(void *hva
, struct kvm_vm
*vm
, const vm_vaddr_t gva
,
344 void kvm_vm_elf_load(struct kvm_vm
*vm
, const char *filename
);
345 int kvm_memfd_alloc(size_t size
, bool hugepages
);
347 void vm_dump(FILE *stream
, struct kvm_vm
*vm
, uint8_t indent
);
349 static inline void kvm_vm_get_dirty_log(struct kvm_vm
*vm
, int slot
, void *log
)
351 struct kvm_dirty_log args
= { .dirty_bitmap
= log
, .slot
= slot
};
353 vm_ioctl(vm
, KVM_GET_DIRTY_LOG
, &args
);
356 static inline void kvm_vm_clear_dirty_log(struct kvm_vm
*vm
, int slot
, void *log
,
357 uint64_t first_page
, uint32_t num_pages
)
359 struct kvm_clear_dirty_log args
= {
362 .first_page
= first_page
,
363 .num_pages
= num_pages
366 vm_ioctl(vm
, KVM_CLEAR_DIRTY_LOG
, &args
);
369 static inline uint32_t kvm_vm_reset_dirty_ring(struct kvm_vm
*vm
)
371 return __vm_ioctl(vm
, KVM_RESET_DIRTY_RINGS
, NULL
);
374 static inline int vm_get_stats_fd(struct kvm_vm
*vm
)
376 int fd
= __vm_ioctl(vm
, KVM_GET_STATS_FD
, NULL
);
378 TEST_ASSERT(fd
>= 0, KVM_IOCTL_ERROR(KVM_GET_STATS_FD
, fd
));
382 static inline void read_stats_header(int stats_fd
, struct kvm_stats_header
*header
)
386 ret
= pread(stats_fd
, header
, sizeof(*header
), 0);
387 TEST_ASSERT(ret
== sizeof(*header
),
388 "Failed to read '%lu' header bytes, ret = '%ld'",
389 sizeof(*header
), ret
);
392 struct kvm_stats_desc
*read_stats_descriptors(int stats_fd
,
393 struct kvm_stats_header
*header
);
395 static inline ssize_t
get_stats_descriptor_size(struct kvm_stats_header
*header
)
398 * The base size of the descriptor is defined by KVM's ABI, but the
399 * size of the name field is variable, as far as KVM's ABI is
400 * concerned. For a given instance of KVM, the name field is the same
401 * size for all stats and is provided in the overall stats header.
403 return sizeof(struct kvm_stats_desc
) + header
->name_size
;
406 static inline struct kvm_stats_desc
*get_stats_descriptor(struct kvm_stats_desc
*stats
,
408 struct kvm_stats_header
*header
)
411 * Note, size_desc includes the size of the name field, which is
412 * variable. i.e. this is NOT equivalent to &stats_desc[i].
414 return (void *)stats
+ index
* get_stats_descriptor_size(header
);
417 void read_stat_data(int stats_fd
, struct kvm_stats_header
*header
,
418 struct kvm_stats_desc
*desc
, uint64_t *data
,
419 size_t max_elements
);
421 void __vm_get_stat(struct kvm_vm
*vm
, const char *stat_name
, uint64_t *data
,
422 size_t max_elements
);
424 static inline uint64_t vm_get_stat(struct kvm_vm
*vm
, const char *stat_name
)
428 __vm_get_stat(vm
, stat_name
, &data
, 1);
432 void vm_create_irqchip(struct kvm_vm
*vm
);
434 void vm_set_user_memory_region(struct kvm_vm
*vm
, uint32_t slot
, uint32_t flags
,
435 uint64_t gpa
, uint64_t size
, void *hva
);
436 int __vm_set_user_memory_region(struct kvm_vm
*vm
, uint32_t slot
, uint32_t flags
,
437 uint64_t gpa
, uint64_t size
, void *hva
);
438 void vm_userspace_mem_region_add(struct kvm_vm
*vm
,
439 enum vm_mem_backing_src_type src_type
,
440 uint64_t guest_paddr
, uint32_t slot
, uint64_t npages
,
443 void vm_mem_region_set_flags(struct kvm_vm
*vm
, uint32_t slot
, uint32_t flags
);
444 void vm_mem_region_move(struct kvm_vm
*vm
, uint32_t slot
, uint64_t new_gpa
);
445 void vm_mem_region_delete(struct kvm_vm
*vm
, uint32_t slot
);
446 struct kvm_vcpu
*__vm_vcpu_add(struct kvm_vm
*vm
, uint32_t vcpu_id
);
447 void vm_populate_vaddr_bitmap(struct kvm_vm
*vm
);
448 vm_vaddr_t
vm_vaddr_unused_gap(struct kvm_vm
*vm
, size_t sz
, vm_vaddr_t vaddr_min
);
449 vm_vaddr_t
vm_vaddr_alloc(struct kvm_vm
*vm
, size_t sz
, vm_vaddr_t vaddr_min
);
450 vm_vaddr_t
__vm_vaddr_alloc(struct kvm_vm
*vm
, size_t sz
, vm_vaddr_t vaddr_min
,
451 enum kvm_mem_region_type type
);
452 vm_vaddr_t
vm_vaddr_alloc_pages(struct kvm_vm
*vm
, int nr_pages
);
453 vm_vaddr_t
__vm_vaddr_alloc_page(struct kvm_vm
*vm
,
454 enum kvm_mem_region_type type
);
455 vm_vaddr_t
vm_vaddr_alloc_page(struct kvm_vm
*vm
);
457 void virt_map(struct kvm_vm
*vm
, uint64_t vaddr
, uint64_t paddr
,
458 unsigned int npages
);
459 void *addr_gpa2hva(struct kvm_vm
*vm
, vm_paddr_t gpa
);
460 void *addr_gva2hva(struct kvm_vm
*vm
, vm_vaddr_t gva
);
461 vm_paddr_t
addr_hva2gpa(struct kvm_vm
*vm
, void *hva
);
462 void *addr_gpa2alias(struct kvm_vm
*vm
, vm_paddr_t gpa
);
464 void vcpu_run(struct kvm_vcpu
*vcpu
);
465 int _vcpu_run(struct kvm_vcpu
*vcpu
);
467 static inline int __vcpu_run(struct kvm_vcpu
*vcpu
)
469 return __vcpu_ioctl(vcpu
, KVM_RUN
, NULL
);
472 void vcpu_run_complete_io(struct kvm_vcpu
*vcpu
);
473 struct kvm_reg_list
*vcpu_get_reg_list(struct kvm_vcpu
*vcpu
);
475 static inline void vcpu_enable_cap(struct kvm_vcpu
*vcpu
, uint32_t cap
,
478 struct kvm_enable_cap enable_cap
= { .cap
= cap
, .args
= { arg0
} };
480 vcpu_ioctl(vcpu
, KVM_ENABLE_CAP
, &enable_cap
);
483 static inline void vcpu_guest_debug_set(struct kvm_vcpu
*vcpu
,
484 struct kvm_guest_debug
*debug
)
486 vcpu_ioctl(vcpu
, KVM_SET_GUEST_DEBUG
, debug
);
489 static inline void vcpu_mp_state_get(struct kvm_vcpu
*vcpu
,
490 struct kvm_mp_state
*mp_state
)
492 vcpu_ioctl(vcpu
, KVM_GET_MP_STATE
, mp_state
);
494 static inline void vcpu_mp_state_set(struct kvm_vcpu
*vcpu
,
495 struct kvm_mp_state
*mp_state
)
497 vcpu_ioctl(vcpu
, KVM_SET_MP_STATE
, mp_state
);
500 static inline void vcpu_regs_get(struct kvm_vcpu
*vcpu
, struct kvm_regs
*regs
)
502 vcpu_ioctl(vcpu
, KVM_GET_REGS
, regs
);
505 static inline void vcpu_regs_set(struct kvm_vcpu
*vcpu
, struct kvm_regs
*regs
)
507 vcpu_ioctl(vcpu
, KVM_SET_REGS
, regs
);
509 static inline void vcpu_sregs_get(struct kvm_vcpu
*vcpu
, struct kvm_sregs
*sregs
)
511 vcpu_ioctl(vcpu
, KVM_GET_SREGS
, sregs
);
514 static inline void vcpu_sregs_set(struct kvm_vcpu
*vcpu
, struct kvm_sregs
*sregs
)
516 vcpu_ioctl(vcpu
, KVM_SET_SREGS
, sregs
);
518 static inline int _vcpu_sregs_set(struct kvm_vcpu
*vcpu
, struct kvm_sregs
*sregs
)
520 return __vcpu_ioctl(vcpu
, KVM_SET_SREGS
, sregs
);
522 static inline void vcpu_fpu_get(struct kvm_vcpu
*vcpu
, struct kvm_fpu
*fpu
)
524 vcpu_ioctl(vcpu
, KVM_GET_FPU
, fpu
);
526 static inline void vcpu_fpu_set(struct kvm_vcpu
*vcpu
, struct kvm_fpu
*fpu
)
528 vcpu_ioctl(vcpu
, KVM_SET_FPU
, fpu
);
531 static inline int __vcpu_get_reg(struct kvm_vcpu
*vcpu
, uint64_t id
, void *addr
)
533 struct kvm_one_reg reg
= { .id
= id
, .addr
= (uint64_t)addr
};
535 return __vcpu_ioctl(vcpu
, KVM_GET_ONE_REG
, ®
);
537 static inline int __vcpu_set_reg(struct kvm_vcpu
*vcpu
, uint64_t id
, uint64_t val
)
539 struct kvm_one_reg reg
= { .id
= id
, .addr
= (uint64_t)&val
};
541 return __vcpu_ioctl(vcpu
, KVM_SET_ONE_REG
, ®
);
543 static inline void vcpu_get_reg(struct kvm_vcpu
*vcpu
, uint64_t id
, void *addr
)
545 struct kvm_one_reg reg
= { .id
= id
, .addr
= (uint64_t)addr
};
547 vcpu_ioctl(vcpu
, KVM_GET_ONE_REG
, ®
);
549 static inline void vcpu_set_reg(struct kvm_vcpu
*vcpu
, uint64_t id
, uint64_t val
)
551 struct kvm_one_reg reg
= { .id
= id
, .addr
= (uint64_t)&val
};
553 vcpu_ioctl(vcpu
, KVM_SET_ONE_REG
, ®
);
556 #ifdef __KVM_HAVE_VCPU_EVENTS
557 static inline void vcpu_events_get(struct kvm_vcpu
*vcpu
,
558 struct kvm_vcpu_events
*events
)
560 vcpu_ioctl(vcpu
, KVM_GET_VCPU_EVENTS
, events
);
562 static inline void vcpu_events_set(struct kvm_vcpu
*vcpu
,
563 struct kvm_vcpu_events
*events
)
565 vcpu_ioctl(vcpu
, KVM_SET_VCPU_EVENTS
, events
);
569 static inline void vcpu_nested_state_get(struct kvm_vcpu
*vcpu
,
570 struct kvm_nested_state
*state
)
572 vcpu_ioctl(vcpu
, KVM_GET_NESTED_STATE
, state
);
574 static inline int __vcpu_nested_state_set(struct kvm_vcpu
*vcpu
,
575 struct kvm_nested_state
*state
)
577 return __vcpu_ioctl(vcpu
, KVM_SET_NESTED_STATE
, state
);
580 static inline void vcpu_nested_state_set(struct kvm_vcpu
*vcpu
,
581 struct kvm_nested_state
*state
)
583 vcpu_ioctl(vcpu
, KVM_SET_NESTED_STATE
, state
);
586 static inline int vcpu_get_stats_fd(struct kvm_vcpu
*vcpu
)
588 int fd
= __vcpu_ioctl(vcpu
, KVM_GET_STATS_FD
, NULL
);
590 TEST_ASSERT(fd
>= 0, KVM_IOCTL_ERROR(KVM_GET_STATS_FD
, fd
));
594 int __kvm_has_device_attr(int dev_fd
, uint32_t group
, uint64_t attr
);
596 static inline void kvm_has_device_attr(int dev_fd
, uint32_t group
, uint64_t attr
)
598 int ret
= __kvm_has_device_attr(dev_fd
, group
, attr
);
600 TEST_ASSERT(!ret
, "KVM_HAS_DEVICE_ATTR failed, rc: %i errno: %i", ret
, errno
);
603 int __kvm_device_attr_get(int dev_fd
, uint32_t group
, uint64_t attr
, void *val
);
605 static inline void kvm_device_attr_get(int dev_fd
, uint32_t group
,
606 uint64_t attr
, void *val
)
608 int ret
= __kvm_device_attr_get(dev_fd
, group
, attr
, val
);
610 TEST_ASSERT(!ret
, KVM_IOCTL_ERROR(KVM_GET_DEVICE_ATTR
, ret
));
613 int __kvm_device_attr_set(int dev_fd
, uint32_t group
, uint64_t attr
, void *val
);
615 static inline void kvm_device_attr_set(int dev_fd
, uint32_t group
,
616 uint64_t attr
, void *val
)
618 int ret
= __kvm_device_attr_set(dev_fd
, group
, attr
, val
);
620 TEST_ASSERT(!ret
, KVM_IOCTL_ERROR(KVM_SET_DEVICE_ATTR
, ret
));
623 static inline int __vcpu_has_device_attr(struct kvm_vcpu
*vcpu
, uint32_t group
,
626 return __kvm_has_device_attr(vcpu
->fd
, group
, attr
);
629 static inline void vcpu_has_device_attr(struct kvm_vcpu
*vcpu
, uint32_t group
,
632 kvm_has_device_attr(vcpu
->fd
, group
, attr
);
635 static inline int __vcpu_device_attr_get(struct kvm_vcpu
*vcpu
, uint32_t group
,
636 uint64_t attr
, void *val
)
638 return __kvm_device_attr_get(vcpu
->fd
, group
, attr
, val
);
641 static inline void vcpu_device_attr_get(struct kvm_vcpu
*vcpu
, uint32_t group
,
642 uint64_t attr
, void *val
)
644 kvm_device_attr_get(vcpu
->fd
, group
, attr
, val
);
647 static inline int __vcpu_device_attr_set(struct kvm_vcpu
*vcpu
, uint32_t group
,
648 uint64_t attr
, void *val
)
650 return __kvm_device_attr_set(vcpu
->fd
, group
, attr
, val
);
653 static inline void vcpu_device_attr_set(struct kvm_vcpu
*vcpu
, uint32_t group
,
654 uint64_t attr
, void *val
)
656 kvm_device_attr_set(vcpu
->fd
, group
, attr
, val
);
659 int __kvm_test_create_device(struct kvm_vm
*vm
, uint64_t type
);
660 int __kvm_create_device(struct kvm_vm
*vm
, uint64_t type
);
662 static inline int kvm_create_device(struct kvm_vm
*vm
, uint64_t type
)
664 int fd
= __kvm_create_device(vm
, type
);
666 TEST_ASSERT(fd
>= 0, KVM_IOCTL_ERROR(KVM_CREATE_DEVICE
, fd
));
670 void *vcpu_map_dirty_ring(struct kvm_vcpu
*vcpu
);
676 * vm - Virtual Machine
677 * num - number of arguments
678 * ... - arguments, each of type uint64_t
684 * Sets the first @num input parameters for the function at @vcpu's entry point,
685 * per the C calling convention of the architecture, to the values given as
686 * variable args. Each of the variable args is expected to be of type uint64_t.
687 * The maximum @num can be is specific to the architecture.
689 void vcpu_args_set(struct kvm_vcpu
*vcpu
, unsigned int num
, ...);
691 void kvm_irq_line(struct kvm_vm
*vm
, uint32_t irq
, int level
);
692 int _kvm_irq_line(struct kvm_vm
*vm
, uint32_t irq
, int level
);
694 #define KVM_MAX_IRQ_ROUTES 4096
696 struct kvm_irq_routing
*kvm_gsi_routing_create(void);
697 void kvm_gsi_routing_irqchip_add(struct kvm_irq_routing
*routing
,
698 uint32_t gsi
, uint32_t pin
);
699 int _kvm_gsi_routing_write(struct kvm_vm
*vm
, struct kvm_irq_routing
*routing
);
700 void kvm_gsi_routing_write(struct kvm_vm
*vm
, struct kvm_irq_routing
*routing
);
702 const char *exit_reason_str(unsigned int exit_reason
);
704 vm_paddr_t
vm_phy_page_alloc(struct kvm_vm
*vm
, vm_paddr_t paddr_min
,
706 vm_paddr_t
vm_phy_pages_alloc(struct kvm_vm
*vm
, size_t num
,
707 vm_paddr_t paddr_min
, uint32_t memslot
);
708 vm_paddr_t
vm_alloc_page_table(struct kvm_vm
*vm
);
711 * ____vm_create() does KVM_CREATE_VM and little else. __vm_create() also
712 * loads the test binary into guest memory and creates an IRQ chip (x86 only).
713 * __vm_create() does NOT create vCPUs, @nr_runnable_vcpus is used purely to
714 * calculate the amount of memory needed for per-vCPU data, e.g. stacks.
716 struct kvm_vm
*____vm_create(enum vm_guest_mode mode
);
717 struct kvm_vm
*__vm_create(enum vm_guest_mode mode
, uint32_t nr_runnable_vcpus
,
718 uint64_t nr_extra_pages
);
720 static inline struct kvm_vm
*vm_create_barebones(void)
722 return ____vm_create(VM_MODE_DEFAULT
);
725 static inline struct kvm_vm
*vm_create(uint32_t nr_runnable_vcpus
)
727 return __vm_create(VM_MODE_DEFAULT
, nr_runnable_vcpus
, 0);
730 struct kvm_vm
*__vm_create_with_vcpus(enum vm_guest_mode mode
, uint32_t nr_vcpus
,
731 uint64_t extra_mem_pages
,
732 void *guest_code
, struct kvm_vcpu
*vcpus
[]);
734 static inline struct kvm_vm
*vm_create_with_vcpus(uint32_t nr_vcpus
,
736 struct kvm_vcpu
*vcpus
[])
738 return __vm_create_with_vcpus(VM_MODE_DEFAULT
, nr_vcpus
, 0,
743 * Create a VM with a single vCPU with reasonable defaults and @extra_mem_pages
744 * additional pages of guest memory. Returns the VM and vCPU (via out param).
746 struct kvm_vm
*__vm_create_with_one_vcpu(struct kvm_vcpu
**vcpu
,
747 uint64_t extra_mem_pages
,
750 static inline struct kvm_vm
*vm_create_with_one_vcpu(struct kvm_vcpu
**vcpu
,
753 return __vm_create_with_one_vcpu(vcpu
, 0, guest_code
);
756 struct kvm_vcpu
*vm_recreate_with_one_vcpu(struct kvm_vm
*vm
);
758 void kvm_pin_this_task_to_pcpu(uint32_t pcpu
);
759 void kvm_print_vcpu_pinning_help(void);
760 void kvm_parse_vcpu_pinning(const char *pcpus_string
, uint32_t vcpu_to_pcpu
[],
763 unsigned long vm_compute_max_gfn(struct kvm_vm
*vm
);
764 unsigned int vm_calc_num_guest_pages(enum vm_guest_mode mode
, size_t size
);
765 unsigned int vm_num_host_pages(enum vm_guest_mode mode
, unsigned int num_guest_pages
);
766 unsigned int vm_num_guest_pages(enum vm_guest_mode mode
, unsigned int num_host_pages
);
767 static inline unsigned int
768 vm_adjust_num_guest_pages(enum vm_guest_mode mode
, unsigned int num_guest_pages
)
771 n
= vm_num_guest_pages(mode
, vm_num_host_pages(mode
, num_guest_pages
));
773 /* s390 requires 1M aligned guest sizes */
774 n
= (n
+ 255) & ~255;
779 struct kvm_userspace_memory_region
*
780 kvm_userspace_memory_region_find(struct kvm_vm
*vm
, uint64_t start
,
783 #define sync_global_to_guest(vm, g) ({ \
784 typeof(g) *_p = addr_gva2hva(vm, (vm_vaddr_t)&(g)); \
785 memcpy(_p, &(g), sizeof(g)); \
788 #define sync_global_from_guest(vm, g) ({ \
789 typeof(g) *_p = addr_gva2hva(vm, (vm_vaddr_t)&(g)); \
790 memcpy(&(g), _p, sizeof(g)); \
794 * Write a global value, but only in the VM's (guest's) domain. Primarily used
795 * for "globals" that hold per-VM values (VMs always duplicate code and global
796 * data into their own region of physical memory), but can be used anytime it's
797 * undesirable to change the host's copy of the global.
799 #define write_guest_global(vm, g, val) ({ \
800 typeof(g) *_p = addr_gva2hva(vm, (vm_vaddr_t)&(g)); \
801 typeof(g) _val = val; \
803 memcpy(_p, &(_val), sizeof(g)); \
806 void assert_on_unhandled_exception(struct kvm_vcpu
*vcpu
);
808 void vcpu_arch_dump(FILE *stream
, struct kvm_vcpu
*vcpu
,
811 static inline void vcpu_dump(FILE *stream
, struct kvm_vcpu
*vcpu
,
814 vcpu_arch_dump(stream
, vcpu
, indent
);
818 * Adds a vCPU with reasonable defaults (e.g. a stack)
821 * vm - Virtual Machine
822 * vcpu_id - The id of the VCPU to add to the VM.
823 * guest_code - The vCPU's entry point
825 struct kvm_vcpu
*vm_arch_vcpu_add(struct kvm_vm
*vm
, uint32_t vcpu_id
,
828 static inline struct kvm_vcpu
*vm_vcpu_add(struct kvm_vm
*vm
, uint32_t vcpu_id
,
831 return vm_arch_vcpu_add(vm
, vcpu_id
, guest_code
);
834 /* Re-create a vCPU after restarting a VM, e.g. for state save/restore tests. */
835 struct kvm_vcpu
*vm_arch_vcpu_recreate(struct kvm_vm
*vm
, uint32_t vcpu_id
);
837 static inline struct kvm_vcpu
*vm_vcpu_recreate(struct kvm_vm
*vm
,
840 return vm_arch_vcpu_recreate(vm
, vcpu_id
);
843 void vcpu_arch_free(struct kvm_vcpu
*vcpu
);
845 void virt_arch_pgd_alloc(struct kvm_vm
*vm
);
847 static inline void virt_pgd_alloc(struct kvm_vm
*vm
)
849 virt_arch_pgd_alloc(vm
);
853 * VM Virtual Page Map
856 * vm - Virtual Machine
857 * vaddr - VM Virtual Address
858 * paddr - VM Physical Address
859 * memslot - Memory region slot for new virtual translation tables
865 * Within @vm, creates a virtual translation for the page starting
866 * at @vaddr to the page starting at @paddr.
868 void virt_arch_pg_map(struct kvm_vm
*vm
, uint64_t vaddr
, uint64_t paddr
);
870 static inline void virt_pg_map(struct kvm_vm
*vm
, uint64_t vaddr
, uint64_t paddr
)
872 virt_arch_pg_map(vm
, vaddr
, paddr
);
877 * Address Guest Virtual to Guest Physical
880 * vm - Virtual Machine
881 * gva - VM virtual address
886 * Equivalent VM physical address
888 * Returns the VM physical address of the translated VM virtual
889 * address given by @gva.
891 vm_paddr_t
addr_arch_gva2gpa(struct kvm_vm
*vm
, vm_vaddr_t gva
);
893 static inline vm_paddr_t
addr_gva2gpa(struct kvm_vm
*vm
, vm_vaddr_t gva
)
895 return addr_arch_gva2gpa(vm
, gva
);
899 * Virtual Translation Tables Dump
902 * stream - Output FILE stream
903 * vm - Virtual Machine
904 * indent - Left margin indent amount
910 * Dumps to the FILE stream given by @stream, the contents of all the
911 * virtual translation tables for the VM given by @vm.
913 void virt_arch_dump(FILE *stream
, struct kvm_vm
*vm
, uint8_t indent
);
915 static inline void virt_dump(FILE *stream
, struct kvm_vm
*vm
, uint8_t indent
)
917 virt_arch_dump(stream
, vm
, indent
);
921 static inline int __vm_disable_nx_huge_pages(struct kvm_vm
*vm
)
923 return __vm_enable_cap(vm
, KVM_CAP_VM_DISABLE_NX_HUGE_PAGES
, 0);
927 * Arch hook that is invoked via a constructor, i.e. before exeucting main(),
928 * to allow for arch-specific setup that is common to all tests, e.g. computing
929 * the default guest "mode".
931 void kvm_selftest_arch_init(void);
933 void kvm_arch_vm_post_create(struct kvm_vm
*vm
);
935 #endif /* SELFTEST_KVM_UTIL_BASE_H */