diff options
author | Andrew Jones <drjones@redhat.com> | 2018-09-18 19:54:28 +0200 |
---|---|---|
committer | Paolo Bonzini <pbonzini@redhat.com> | 2018-10-17 00:26:44 +0200 |
commit | eabe7881d264fd8ee074636fe50c8a8af08fedfd (patch) | |
tree | 0454dd2da4c33826ba64061328cbb38b56b43675 /tools/testing/selftests | |
parent | eea192bfd96db157151d27dd9c5e3e6a50c5d6be (diff) | |
download | linux-stable-eabe7881d264fd8ee074636fe50c8a8af08fedfd.tar.gz linux-stable-eabe7881d264fd8ee074636fe50c8a8af08fedfd.tar.bz2 linux-stable-eabe7881d264fd8ee074636fe50c8a8af08fedfd.zip |
kvm: selftests: tidy up kvm_util
Tidy up kvm-util code: code/comment formatting, remove unused code,
and move x86 specific code out. We also move vcpu_dump() out of
common code, because not all arches (AArch64) have KVM_GET_REGS.
Signed-off-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'tools/testing/selftests')
-rw-r--r-- | tools/testing/selftests/kvm/include/kvm_util.h | 80 | ||||
-rw-r--r-- | tools/testing/selftests/kvm/include/x86_64/processor.h | 20 | ||||
-rw-r--r-- | tools/testing/selftests/kvm/lib/kvm_util.c | 438 | ||||
-rw-r--r-- | tools/testing/selftests/kvm/lib/kvm_util_internal.h | 22 | ||||
-rw-r--r-- | tools/testing/selftests/kvm/lib/x86_64/processor.c | 245 | ||||
-rw-r--r-- | tools/testing/selftests/kvm/x86_64/dirty_log_test.c | 1 |
6 files changed, 407 insertions, 399 deletions
diff --git a/tools/testing/selftests/kvm/include/kvm_util.h b/tools/testing/selftests/kvm/include/kvm_util.h index 7830c46f27d8..4d5e405ff246 100644 --- a/tools/testing/selftests/kvm/include/kvm_util.h +++ b/tools/testing/selftests/kvm/include/kvm_util.h @@ -17,12 +17,6 @@ #include "sparsebit.h" -/* - * Memslots can't cover the gfn starting at this gpa otherwise vCPUs can't be - * created. Only applies to VMs using EPT. - */ -#define KVM_DEFAULT_IDENTITY_MAP_ADDRESS 0xfffbc000ul - /* Callers of kvm_util only have an incomplete/opaque description of the * structure kvm_util is using to maintain the state of a VM. @@ -33,11 +27,11 @@ typedef uint64_t vm_paddr_t; /* Virtual Machine (Guest) physical address */ typedef uint64_t vm_vaddr_t; /* Virtual Machine (Guest) virtual address */ /* Minimum allocated guest virtual and physical addresses */ -#define KVM_UTIL_MIN_VADDR 0x2000 +#define KVM_UTIL_MIN_VADDR 0x2000 #define DEFAULT_GUEST_PHY_PAGES 512 #define DEFAULT_GUEST_STACK_VADDR_MIN 0xab6000 -#define DEFAULT_STACK_PGS 5 +#define DEFAULT_STACK_PGS 5 enum vm_guest_mode { VM_MODE_FLAT48PG, @@ -58,15 +52,15 @@ void kvm_vm_restart(struct kvm_vm *vmp, int perm); void kvm_vm_release(struct kvm_vm *vmp); void kvm_vm_get_dirty_log(struct kvm_vm *vm, int slot, void *log); -int kvm_memcmp_hva_gva(void *hva, - struct kvm_vm *vm, const vm_vaddr_t gva, size_t len); +int kvm_memcmp_hva_gva(void *hva, struct kvm_vm *vm, const vm_vaddr_t gva, + size_t len); void kvm_vm_elf_load(struct kvm_vm *vm, const char *filename, - uint32_t data_memslot, uint32_t pgd_memslot); + uint32_t data_memslot, uint32_t pgd_memslot); void vm_dump(FILE *stream, struct kvm_vm *vm, uint8_t indent); -void vcpu_dump(FILE *stream, struct kvm_vm *vm, - uint32_t vcpuid, uint8_t indent); +void vcpu_dump(FILE *stream, struct kvm_vm *vm, uint32_t vcpuid, + uint8_t indent); void vm_create_irqchip(struct kvm_vm *vm); @@ -75,13 +69,14 @@ void vm_userspace_mem_region_add(struct kvm_vm *vm, uint64_t guest_paddr, uint32_t slot, uint64_t npages, uint32_t flags); -void vcpu_ioctl(struct kvm_vm *vm, - uint32_t vcpuid, unsigned long ioctl, void *arg); +void vcpu_ioctl(struct kvm_vm *vm, uint32_t vcpuid, unsigned long ioctl, + void *arg); void vm_ioctl(struct kvm_vm *vm, unsigned long ioctl, void *arg); void vm_mem_region_set_flags(struct kvm_vm *vm, uint32_t slot, uint32_t flags); -void vm_vcpu_add(struct kvm_vm *vm, uint32_t vcpuid, int pgd_memslot, int gdt_memslot); +void vm_vcpu_add(struct kvm_vm *vm, uint32_t vcpuid, int pgd_memslot, + int gdt_memslot); vm_vaddr_t vm_vaddr_alloc(struct kvm_vm *vm, size_t sz, vm_vaddr_t vaddr_min, - uint32_t data_memslot, uint32_t pgd_memslot); + uint32_t data_memslot, uint32_t pgd_memslot); void virt_map(struct kvm_vm *vm, uint64_t vaddr, uint64_t paddr, size_t size, uint32_t pgd_memslot); void *addr_gpa2hva(struct kvm_vm *vm, vm_paddr_t gpa); @@ -93,56 +88,33 @@ struct kvm_run *vcpu_state(struct kvm_vm *vm, uint32_t vcpuid); void vcpu_run(struct kvm_vm *vm, uint32_t vcpuid); int _vcpu_run(struct kvm_vm *vm, uint32_t vcpuid); void vcpu_set_mp_state(struct kvm_vm *vm, uint32_t vcpuid, - struct kvm_mp_state *mp_state); -void vcpu_regs_get(struct kvm_vm *vm, - uint32_t vcpuid, struct kvm_regs *regs); -void vcpu_regs_set(struct kvm_vm *vm, - uint32_t vcpuid, struct kvm_regs *regs); + struct kvm_mp_state *mp_state); +void vcpu_regs_get(struct kvm_vm *vm, uint32_t vcpuid, struct kvm_regs *regs); +void vcpu_regs_set(struct kvm_vm *vm, uint32_t vcpuid, struct kvm_regs *regs); void vcpu_args_set(struct kvm_vm *vm, uint32_t vcpuid, unsigned int num, ...); -void vcpu_sregs_get(struct kvm_vm *vm, - uint32_t vcpuid, struct kvm_sregs *sregs); -void vcpu_sregs_set(struct kvm_vm *vm, - uint32_t vcpuid, struct kvm_sregs *sregs); -int _vcpu_sregs_set(struct kvm_vm *vm, - uint32_t vcpuid, struct kvm_sregs *sregs); +void vcpu_sregs_get(struct kvm_vm *vm, uint32_t vcpuid, + struct kvm_sregs *sregs); +void vcpu_sregs_set(struct kvm_vm *vm, uint32_t vcpuid, + struct kvm_sregs *sregs); +int _vcpu_sregs_set(struct kvm_vm *vm, uint32_t vcpuid, + struct kvm_sregs *sregs); void vcpu_events_get(struct kvm_vm *vm, uint32_t vcpuid, - struct kvm_vcpu_events *events); + struct kvm_vcpu_events *events); void vcpu_events_set(struct kvm_vm *vm, uint32_t vcpuid, - struct kvm_vcpu_events *events); -uint64_t vcpu_get_msr(struct kvm_vm *vm, uint32_t vcpuid, uint64_t msr_index); -void vcpu_set_msr(struct kvm_vm *vm, uint32_t vcpuid, uint64_t msr_index, - uint64_t msr_value); + struct kvm_vcpu_events *events); const char *exit_reason_str(unsigned int exit_reason); void virt_pgd_alloc(struct kvm_vm *vm, uint32_t pgd_memslot); void virt_pg_map(struct kvm_vm *vm, uint64_t vaddr, uint64_t paddr, - uint32_t pgd_memslot); -vm_paddr_t vm_phy_page_alloc(struct kvm_vm *vm, - vm_paddr_t paddr_min, uint32_t memslot); - -struct kvm_cpuid2 *kvm_get_supported_cpuid(void); -void vcpu_set_cpuid( - struct kvm_vm *vm, uint32_t vcpuid, struct kvm_cpuid2 *cpuid); - -struct kvm_cpuid_entry2 * -kvm_get_supported_cpuid_index(uint32_t function, uint32_t index); - -static inline struct kvm_cpuid_entry2 * -kvm_get_supported_cpuid_entry(uint32_t function) -{ - return kvm_get_supported_cpuid_index(function, 0); -} + uint32_t pgd_memslot); +vm_paddr_t vm_phy_page_alloc(struct kvm_vm *vm, vm_paddr_t paddr_min, + uint32_t memslot); struct kvm_vm *vm_create_default(uint32_t vcpuid, uint64_t extra_mem_size, void *guest_code); void vm_vcpu_add_default(struct kvm_vm *vm, uint32_t vcpuid, void *guest_code); -typedef void (*vmx_guest_code_t)(vm_vaddr_t vmxon_vaddr, - vm_paddr_t vmxon_paddr, - vm_vaddr_t vmcs_vaddr, - vm_paddr_t vmcs_paddr); - struct kvm_userspace_memory_region * kvm_userspace_memory_region_find(struct kvm_vm *vm, uint64_t start, uint64_t end); diff --git a/tools/testing/selftests/kvm/include/x86_64/processor.h b/tools/testing/selftests/kvm/include/x86_64/processor.h index bb76e8db9b2b..e2884c2b81ff 100644 --- a/tools/testing/selftests/kvm/include/x86_64/processor.h +++ b/tools/testing/selftests/kvm/include/x86_64/processor.h @@ -305,7 +305,25 @@ static inline unsigned long get_xmm(int n) struct kvm_x86_state; struct kvm_x86_state *vcpu_save_state(struct kvm_vm *vm, uint32_t vcpuid); -void vcpu_load_state(struct kvm_vm *vm, uint32_t vcpuid, struct kvm_x86_state *state); +void vcpu_load_state(struct kvm_vm *vm, uint32_t vcpuid, + struct kvm_x86_state *state); + +struct kvm_cpuid2 *kvm_get_supported_cpuid(void); +void vcpu_set_cpuid(struct kvm_vm *vm, uint32_t vcpuid, + struct kvm_cpuid2 *cpuid); + +struct kvm_cpuid_entry2 * +kvm_get_supported_cpuid_index(uint32_t function, uint32_t index); + +static inline struct kvm_cpuid_entry2 * +kvm_get_supported_cpuid_entry(uint32_t function) +{ + return kvm_get_supported_cpuid_index(function, 0); +} + +uint64_t vcpu_get_msr(struct kvm_vm *vm, uint32_t vcpuid, uint64_t msr_index); +void vcpu_set_msr(struct kvm_vm *vm, uint32_t vcpuid, uint64_t msr_index, + uint64_t msr_value); /* * Basic CPU control in CR0 diff --git a/tools/testing/selftests/kvm/lib/kvm_util.c b/tools/testing/selftests/kvm/lib/kvm_util.c index 4bd31bf04f53..1a8f8f9e3635 100644 --- a/tools/testing/selftests/kvm/lib/kvm_util.c +++ b/tools/testing/selftests/kvm/lib/kvm_util.c @@ -16,8 +16,6 @@ #include <sys/stat.h> #include <linux/kernel.h> -#define KVM_DEV_PATH "/dev/kvm" - #define KVM_UTIL_PGS_PER_HUGEPG 512 #define KVM_UTIL_MIN_PADDR 0x2000 @@ -30,7 +28,8 @@ static void *align(void *x, size_t size) return (void *) (((size_t) x + mask) & ~mask); } -/* Capability +/* + * Capability * * Input Args: * cap - Capability @@ -92,13 +91,13 @@ static void vm_open(struct kvm_vm *vm, int perm) if (vm->kvm_fd < 0) exit(KSFT_SKIP); - /* Create VM. */ vm->fd = ioctl(vm->kvm_fd, KVM_CREATE_VM, NULL); TEST_ASSERT(vm->fd >= 0, "KVM_CREATE_VM ioctl failed, " "rc: %i errno: %i", vm->fd, errno); } -/* VM Create +/* + * VM Create * * Input Args: * mode - VM Mode (e.g. VM_MODE_FLAT48PG) @@ -121,7 +120,6 @@ struct kvm_vm *vm_create(enum vm_guest_mode mode, uint64_t phy_pages, int perm) struct kvm_vm *vm; int kvm_fd; - /* Allocate memory. */ vm = calloc(1, sizeof(*vm)); TEST_ASSERT(vm != NULL, "Insufficent Memory"); @@ -160,7 +158,8 @@ struct kvm_vm *vm_create(enum vm_guest_mode mode, uint64_t phy_pages, int perm) return vm; } -/* VM Restart +/* + * VM Restart * * Input Args: * vm - VM that has been released before @@ -187,7 +186,8 @@ void kvm_vm_restart(struct kvm_vm *vmp, int perm) " rc: %i errno: %i\n" " slot: %u flags: 0x%x\n" " guest_phys_addr: 0x%lx size: 0x%lx", - ret, errno, region->region.slot, region->region.flags, + ret, errno, region->region.slot, + region->region.flags, region->region.guest_phys_addr, region->region.memory_size); } @@ -203,7 +203,8 @@ void kvm_vm_get_dirty_log(struct kvm_vm *vm, int slot, void *log) strerror(-ret)); } -/* Userspace Memory Region Find +/* + * Userspace Memory Region Find * * Input Args: * vm - Virtual Machine @@ -221,8 +222,8 @@ void kvm_vm_get_dirty_log(struct kvm_vm *vm, int slot, void *log) * of the regions is returned. Null is returned only when no overlapping * region exists. */ -static struct userspace_mem_region *userspace_mem_region_find( - struct kvm_vm *vm, uint64_t start, uint64_t end) +static struct userspace_mem_region * +userspace_mem_region_find(struct kvm_vm *vm, uint64_t start, uint64_t end) { struct userspace_mem_region *region; @@ -238,7 +239,8 @@ static struct userspace_mem_region *userspace_mem_region_find( return NULL; } -/* KVM Userspace Memory Region Find +/* + * KVM Userspace Memory Region Find * * Input Args: * vm - Virtual Machine @@ -266,7 +268,8 @@ kvm_userspace_memory_region_find(struct kvm_vm *vm, uint64_t start, return ®ion->region; } -/* VCPU Find +/* + * VCPU Find * * Input Args: * vm - Virtual Machine @@ -281,8 +284,7 @@ kvm_userspace_memory_region_find(struct kvm_vm *vm, uint64_t start, * returns a pointer to it. Returns NULL if the VM doesn't contain a VCPU * for the specified vcpuid. */ -struct vcpu *vcpu_find(struct kvm_vm *vm, - uint32_t vcpuid) +struct vcpu *vcpu_find(struct kvm_vm *vm, uint32_t vcpuid) { struct vcpu *vcpup; @@ -294,7 +296,8 @@ struct vcpu *vcpu_find(struct kvm_vm *vm, return NULL; } -/* VM VCPU Remove +/* + * VM VCPU Remove * * Input Args: * vm - Virtual Machine @@ -331,11 +334,9 @@ void kvm_vm_release(struct kvm_vm *vmp) { int ret; - /* Free VCPUs. */ while (vmp->vcpu_head) vm_vcpu_rm(vmp, vmp->vcpu_head->id); - /* Close file descriptor for the VM. */ ret = close(vmp->fd); TEST_ASSERT(ret == 0, "Close of vm fd failed,\n" " vmp->fd: %i rc: %i errno: %i", vmp->fd, ret, errno); @@ -345,7 +346,8 @@ void kvm_vm_release(struct kvm_vm *vmp) " vmp->kvm_fd: %i rc: %i errno: %i", vmp->kvm_fd, ret, errno); } -/* Destroys and frees the VM pointed to by vmp. +/* + * Destroys and frees the VM pointed to by vmp. */ void kvm_vm_free(struct kvm_vm *vmp) { @@ -384,7 +386,8 @@ void kvm_vm_free(struct kvm_vm *vmp) free(vmp); } -/* Memory Compare, host virtual to guest virtual +/* + * Memory Compare, host virtual to guest virtual * * Input Args: * hva - Starting host virtual address @@ -406,23 +409,25 @@ void kvm_vm_free(struct kvm_vm *vmp) * a length of len, to the guest bytes starting at the guest virtual * address given by gva. */ -int kvm_memcmp_hva_gva(void *hva, - struct kvm_vm *vm, vm_vaddr_t gva, size_t len) +int kvm_memcmp_hva_gva(void *hva, struct kvm_vm *vm, vm_vaddr_t gva, size_t len) { size_t amt; - /* Compare a batch of bytes until either a match is found + /* + * Compare a batch of bytes until either a match is found * or all the bytes have been compared. */ for (uintptr_t offset = 0; offset < len; offset += amt) { uintptr_t ptr1 = (uintptr_t)hva + offset; - /* Determine host address for guest virtual address + /* + * Determine host address for guest virtual address * at offset. */ uintptr_t ptr2 = (uintptr_t)addr_gva2hva(vm, gva + offset); - /* Determine amount to compare on this pass. + /* + * Determine amount to compare on this pass. * Don't allow the comparsion to cross a page boundary. */ amt = len - offset; @@ -434,7 +439,8 @@ int kvm_memcmp_hva_gva(void *hva, assert((ptr1 >> vm->page_shift) == ((ptr1 + amt - 1) >> vm->page_shift)); assert((ptr2 >> vm->page_shift) == ((ptr2 + amt - 1) >> vm->page_shift)); - /* Perform the comparison. If there is a difference + /* + * Perform the comparison. If there is a difference * return that result to the caller, otherwise need * to continue on looking for a mismatch. */ @@ -443,109 +449,15 @@ int kvm_memcmp_hva_gva(void *hva, return ret; } - /* No mismatch found. Let the caller know the two memory + /* + * No mismatch found. Let the caller know the two memory * areas are equal. */ return 0; } -/* Allocate an instance of struct kvm_cpuid2 - * - * Input Args: None - * - * Output Args: None - * - * Return: A pointer to the allocated struct. The caller is responsible - * for freeing this struct. - * - * Since kvm_cpuid2 uses a 0-length array to allow a the size of the - * array to be decided at allocation time, allocation is slightly - * complicated. This function uses a reasonable default length for - * the array and performs the appropriate allocation. - */ -static struct kvm_cpuid2 *allocate_kvm_cpuid2(void) -{ - struct kvm_cpuid2 *cpuid; - int nent = 100; - size_t size; - - size = sizeof(*cpuid); - size += nent * sizeof(struct kvm_cpuid_entry2); - cpuid = malloc(size); - if (!cpuid) { - perror("malloc"); - abort(); - } - - cpuid->nent = nent; - - return cpuid; -} - -/* KVM Supported CPUID Get - * - * Input Args: None - * - * Output Args: - * - * Return: The supported KVM CPUID - * - * Get the guest CPUID supported by KVM. - */ -struct kvm_cpuid2 *kvm_get_supported_cpuid(void) -{ - static struct kvm_cpuid2 *cpuid; - int ret; - int kvm_fd; - - if (cpuid) - return cpuid; - - cpuid = allocate_kvm_cpuid2(); - kvm_fd = open(KVM_DEV_PATH, O_RDONLY); - if (kvm_fd < 0) - exit(KSFT_SKIP); - - ret = ioctl(kvm_fd, KVM_GET_SUPPORTED_CPUID, cpuid); - TEST_ASSERT(ret == 0, "KVM_GET_SUPPORTED_CPUID failed %d %d\n", - ret, errno); - - close(kvm_fd); - return cpuid; -} - -/* Locate a cpuid entry. - * - * Input Args: - * cpuid: The cpuid. - * function: The function of the cpuid entry to find. - * - * Output Args: None - * - * Return: A pointer to the cpuid entry. Never returns NULL. - */ -struct kvm_cpuid_entry2 * -kvm_get_supported_cpuid_index(uint32_t function, uint32_t index) -{ - struct kvm_cpuid2 *cpuid; - struct kvm_cpuid_entry2 *entry = NULL; - int i; - - cpuid = kvm_get_supported_cpuid(); - for (i = 0; i < cpuid->nent; i++) { - if (cpuid->entries[i].function == function && - cpuid->entries[i].index == index) { - entry = &cpuid->entries[i]; - break; - } - } - - TEST_ASSERT(entry, "Guest CPUID entry not found: (EAX=%x, ECX=%x).", - function, index); - return entry; -} - -/* VM Userspace Memory Region Add +/* + * VM Userspace Memory Region Add * * Input Args: * vm - Virtual Machine @@ -587,7 +499,8 @@ void vm_userspace_mem_region_add(struct kvm_vm *vm, " vm->max_gfn: 0x%lx vm->page_size: 0x%x", guest_paddr, npages, vm->max_gfn, vm->page_size); - /* Confirm a mem region with an overlapping address doesn't + /* + * Confirm a mem region with an overlapping address doesn't * already exist. */ region = (struct userspace_mem_region *) userspace_mem_region_find( @@ -678,7 +591,8 @@ void vm_userspace_mem_region_add(struct kvm_vm *vm, vm->userspace_mem_region_head = region; } -/* Memslot to region +/* + * Memslot to region * * Input Args: * vm - Virtual Machine @@ -692,8 +606,8 @@ void vm_userspace_mem_region_add(struct kvm_vm *vm, * on error (e.g. currently no memory region using memslot as a KVM * memory slot ID). */ -static struct userspace_mem_region *memslot2region(struct kvm_vm *vm, - uint32_t memslot) +static struct userspace_mem_region * +memslot2region(struct kvm_vm *vm, uint32_t memslot) { struct userspace_mem_region *region; @@ -713,7 +627,8 @@ static struct userspace_mem_region *memslot2region(struct kvm_vm *vm, return region; } -/* VM Memory Region Flags Set +/* + * VM Memory Region Flags Set * * Input Args: * vm - Virtual Machine @@ -731,7 +646,6 @@ void vm_mem_region_set_flags(struct kvm_vm *vm, uint32_t slot, uint32_t flags) int ret; struct userspace_mem_region *region; - /* Locate memory region. */ region = memslot2region(vm, slot); region->region.flags = flags; @@ -743,7 +657,8 @@ void vm_mem_region_set_flags(struct kvm_vm *vm, uint32_t slot, uint32_t flags) ret, errno, slot, flags); } -/* VCPU mmap Size +/* + * VCPU mmap Size * * Input Args: None * @@ -773,7 +688,8 @@ static int vcpu_mmap_sz(void) return ret; } -/* VM VCPU Add +/* + * VM VCPU Add * * Input Args: * vm - Virtual Machine @@ -786,7 +702,8 @@ static int vcpu_mmap_sz(void) * Creates and adds to the VM specified by vm and virtual CPU with * the ID given by vcpuid. */ -void vm_vcpu_add(struct kvm_vm *vm, uint32_t vcpuid, int pgd_memslot, int gdt_memslot) +void vm_vcpu_add(struct kvm_vm *vm, uint32_t vcpuid, int pgd_memslot, + int gdt_memslot) { struct vcpu *vcpu; @@ -824,7 +741,8 @@ void vm_vcpu_add(struct kvm_vm *vm, uint32_t vcpuid, int pgd_memslot, int gdt_me vcpu_setup(vm, vcpuid, pgd_memslot, gdt_memslot); } -/* VM Virtual Address Unused Gap +/* + * VM Virtual Address Unused Gap * * Input Args: * vm - Virtual Machine @@ -844,14 +762,14 @@ void vm_vcpu_add(struct kvm_vm *vm, uint32_t vcpuid, int pgd_memslot, int gdt_me * sz unallocated bytes >= vaddr_min is available. */ static vm_vaddr_t vm_vaddr_unused_gap(struct kvm_vm *vm, size_t sz, - vm_vaddr_t vaddr_min) + vm_vaddr_t vaddr_min) { uint64_t pages = (sz + vm->page_size - 1) >> vm->page_shift; /* Determine lowest permitted virtual page index. */ uint64_t pgidx_start = (vaddr_min + vm->page_size - 1) >> vm->page_shift; if ((pgidx_start * vm->page_size) < vaddr_min) - goto no_va_found; + goto no_va_found; /* Loop over section with enough valid virtual page indexes. */ if (!sparsebit_is_set_num(vm->vpages_valid, @@ -910,7 +828,8 @@ va_found: return pgidx_start * vm->page_size; } -/* VM Virtual Address Allocate +/* + * VM Virtual Address Allocate * * Input Args: * vm - Virtual Machine @@ -931,13 +850,14 @@ va_found: * a page. */ vm_vaddr_t vm_vaddr_alloc(struct kvm_vm *vm, size_t sz, vm_vaddr_t vaddr_min, - uint32_t data_memslot, uint32_t pgd_memslot) + uint32_t data_memslot, uint32_t pgd_memslot) { uint64_t pages = (sz >> vm->page_shift) + ((sz % vm->page_size) != 0); virt_pgd_alloc(vm, pgd_memslot); - /* Find an unused range of virtual page addresses of at least + /* + * Find an unused range of virtual page addresses of at least * pages in length. */ vm_vaddr_t vaddr_start = vm_vaddr_unused_gap(vm, sz, vaddr_min); @@ -991,7 +911,8 @@ void virt_map(struct kvm_vm *vm, uint64_t vaddr, uint64_t paddr, } } -/* Address VM Physical to Host Virtual +/* + * Address VM Physical to Host Virtual * * Input Args: * vm - Virtual Machine @@ -1023,7 +944,8 @@ void *addr_gpa2hva(struct kvm_vm *vm, vm_paddr_t gpa) return NULL; } -/* Address Host Virtual to VM Physical +/* + * Address Host Virtual to VM Physical * * Input Args: * vm - Virtual Machine @@ -1057,7 +979,8 @@ vm_paddr_t addr_hva2gpa(struct kvm_vm *vm, void *hva) return -1; } -/* VM Create IRQ Chip +/* + * VM Create IRQ Chip * * Input Args: * vm - Virtual Machine @@ -1079,7 +1002,8 @@ void vm_create_irqchip(struct kvm_vm *vm) vm->has_irqchip = true; } -/* VM VCPU State +/* + * VM VCPU State * * Input Args: * vm - Virtual Machine @@ -1101,7 +1025,8 @@ struct kvm_run *vcpu_state(struct kvm_vm *vm, uint32_t vcpuid) return vcpu->state; } -/* VM VCPU Run +/* + * VM VCPU Run * * Input Args: * vm - Virtual Machine @@ -1127,13 +1052,14 @@ int _vcpu_run(struct kvm_vm *vm, uint32_t vcpuid) int rc; TEST_ASSERT(vcpu != NULL, "vcpu not found, vcpuid: %u", vcpuid); - do { + do { rc = ioctl(vcpu->fd, KVM_RUN, NULL); } while (rc == -1 && errno == EINTR); return rc; } -/* VM VCPU Set MP State +/* + * VM VCPU Set MP State * * Input Args: * vm - Virtual Machine @@ -1148,7 +1074,7 @@ int _vcpu_run(struct kvm_vm *vm, uint32_t vcpuid) * by mp_state. */ void vcpu_set_mp_state(struct kvm_vm *vm, uint32_t vcpuid, - struct kvm_mp_state *mp_state) + struct kvm_mp_state *mp_state) { struct vcpu *vcpu = vcpu_find(vm, vcpuid); int ret; @@ -1160,7 +1086,8 @@ void vcpu_set_mp_state(struct kvm_vm *vm, uint32_t vcpuid, "rc: %i errno: %i", ret, errno); } -/* VM VCPU Regs Get +/* + * VM VCPU Regs Get * * Input Args: * vm - Virtual Machine @@ -1174,21 +1101,20 @@ void vcpu_set_mp_state(struct kvm_vm *vm, uint32_t vcpuid, * Obtains the current register state for the VCPU specified by vcpuid * and stores it at the location given by regs. */ -void vcpu_regs_get(struct kvm_vm *vm, - uint32_t vcpuid, struct kvm_regs *regs) +void vcpu_regs_get(struct kvm_vm *vm, uint32_t vcpuid, struct kvm_regs *regs) { struct vcpu *vcpu = vcpu_find(vm, vcpuid); int ret; TEST_ASSERT(vcpu != NULL, "vcpu not found, vcpuid: %u", vcpuid); - /* Get the regs. */ ret = ioctl(vcpu->fd, KVM_GET_REGS, regs); TEST_ASSERT(ret == 0, "KVM_GET_REGS failed, rc: %i errno: %i", ret, errno); } -/* VM VCPU Regs Set +/* + * VM VCPU Regs Set * * Input Args: * vm - Virtual Machine @@ -1202,165 +1128,46 @@ void vcpu_regs_get(struct kvm_vm *vm, * Sets the regs of the VCPU specified by vcpuid to the values * given by regs. */ -void vcpu_regs_set(struct kvm_vm *vm, - uint32_t vcpuid, struct kvm_regs *regs) +void vcpu_regs_set(struct kvm_vm *vm, uint32_t vcpuid, struct kvm_regs *regs) { struct vcpu *vcpu = vcpu_find(vm, vcpuid); int ret; TEST_ASSERT(vcpu != NULL, "vcpu not found, vcpuid: %u", vcpuid); - /* Set the regs. */ ret = ioctl(vcpu->fd, KVM_SET_REGS, regs); TEST_ASSERT(ret == 0, "KVM_SET_REGS failed, rc: %i errno: %i", ret, errno); } void vcpu_events_get(struct kvm_vm *vm, uint32_t vcpuid, - struct kvm_vcpu_events *events) + struct kvm_vcpu_events *events) { struct vcpu *vcpu = vcpu_find(vm, vcpuid); int ret; TEST_ASSERT(vcpu != NULL, "vcpu not found, vcpuid: %u", vcpuid); - /* Get the regs. */ ret = ioctl(vcpu->fd, KVM_GET_VCPU_EVENTS, events); TEST_ASSERT(ret == 0, "KVM_GET_VCPU_EVENTS, failed, rc: %i errno: %i", ret, errno); } void vcpu_events_set(struct kvm_vm *vm, uint32_t vcpuid, - struct kvm_vcpu_events *events) + struct kvm_vcpu_events *events) { struct vcpu *vcpu = vcpu_find(vm, vcpuid); int ret; TEST_ASSERT(vcpu != NULL, "vcpu not found, vcpuid: %u", vcpuid); - /* Set the regs. */ ret = ioctl(vcpu->fd, KVM_SET_VCPU_EVENTS, events); TEST_ASSERT(ret == 0, "KVM_SET_VCPU_EVENTS, failed, rc: %i errno: %i", ret, errno); } -/* VCPU Get MSR - * - * Input Args: - * vm - Virtual Machine - * vcpuid - VCPU ID - * msr_index - Index of MSR - * - * Output Args: None - * - * Return: On success, value of the MSR. On failure a TEST_ASSERT is produced. - * - * Get value of MSR for VCPU. - */ -uint64_t vcpu_get_msr(struct kvm_vm *vm, uint32_t vcpuid, uint64_t msr_index) -{ - struct vcpu *vcpu = vcpu_find(vm, vcpuid); - struct { - struct kvm_msrs header; - struct kvm_msr_entry entry; - } buffer = {}; - int r; - - TEST_ASSERT(vcpu != NULL, "vcpu not found, vcpuid: %u", vcpuid); - buffer.header.nmsrs = 1; - buffer.entry.index = msr_index; - r = ioctl(vcpu->fd, KVM_GET_MSRS, &buffer.header); - TEST_ASSERT(r == 1, "KVM_GET_MSRS IOCTL failed,\n" - " rc: %i errno: %i", r, errno); - - return buffer.entry.data; -} - -/* VCPU Set MSR - * - * Input Args: - * vm - Virtual Machine - * vcpuid - VCPU ID - * msr_index - Index of MSR - * msr_value - New value of MSR - * - * Output Args: None - * - * Return: On success, nothing. On failure a TEST_ASSERT is produced. - * - * Set value of MSR for VCPU. - */ -void vcpu_set_msr(struct kvm_vm *vm, uint32_t vcpuid, uint64_t msr_index, - uint64_t msr_value) -{ - struct vcpu *vcpu = vcpu_find(vm, vcpuid); - struct { - struct kvm_msrs header; - struct kvm_msr_entry entry; - } buffer = {}; - int r; - - TEST_ASSERT(vcpu != NULL, "vcpu not found, vcpuid: %u", vcpuid); - memset(&buffer, 0, sizeof(buffer)); - buffer.header.nmsrs = 1; - buffer.entry.index = msr_index; - buffer.entry.data = msr_value; - r = ioctl(vcpu->fd, KVM_SET_MSRS, &buffer.header); - TEST_ASSERT(r == 1, "KVM_SET_MSRS IOCTL failed,\n" - " rc: %i errno: %i", r, errno); -} - -/* VM VCPU Args Set - * - * Input Args: - * vm - Virtual Machine - * vcpuid - VCPU ID - * num - number of arguments - * ... - arguments, each of type uint64_t - * - * Output Args: None - * - * Return: None - * - * Sets the first num function input arguments to the values - * given as variable args. Each of the variable args is expected to - * be of type uint64_t. - */ -void vcpu_args_set(struct kvm_vm *vm, uint32_t vcpuid, unsigned int num, ...) -{ - va_list ap; - struct kvm_regs regs; - - TEST_ASSERT(num >= 1 && num <= 6, "Unsupported number of args,\n" - " num: %u\n", - num); - - va_start(ap, num); - vcpu_regs_get(vm, vcpuid, ®s); - - if (num >= 1) - regs.rdi = va_arg(ap, uint64_t); - - if (num >= 2) - regs.rsi = va_arg(ap, uint64_t); - - if (num >= 3) - regs.rdx = va_arg(ap, uint64_t); - - if (num >= 4) - regs.rcx = va_arg(ap, uint64_t); - - if (num >= 5) - regs.r8 = va_arg(ap, uint64_t); - - if (num >= 6) - regs.r9 = va_arg(ap, uint64_t); - - vcpu_regs_set(vm, vcpuid, ®s); - va_end(ap); -} - -/* VM VCPU System Regs Get +/* + * VM VCPU System Regs Get * * Input Args: * vm - Virtual Machine @@ -1374,22 +1181,20 @@ void vcpu_args_set(struct kvm_vm *vm, uint32_t vcpuid, unsigned int num, ...) * Obtains the current system register state for the VCPU specified by * vcpuid and stores it at the location given by sregs. */ -void vcpu_sregs_get(struct kvm_vm *vm, - uint32_t vcpuid, struct kvm_sregs *sregs) +void vcpu_sregs_get(struct kvm_vm *vm, uint32_t vcpuid, struct kvm_sregs *sregs) { struct vcpu *vcpu = vcpu_find(vm, vcpuid); int ret; TEST_ASSERT(vcpu != NULL, "vcpu not found, vcpuid: %u", vcpuid); - /* Get the regs. */ - /* Get the regs. */ ret = ioctl(vcpu->fd, KVM_GET_SREGS, sregs); TEST_ASSERT(ret == 0, "KVM_GET_SREGS failed, rc: %i errno: %i", ret, errno); } -/* VM VCPU System Regs Set +/* + * VM VCPU System Regs Set * * Input Args: * vm - Virtual Machine @@ -1403,27 +1208,25 @@ void vcpu_sregs_get(struct kvm_vm *vm, * Sets the system regs of the VCPU specified by vcpuid to the values * given by sregs. */ -void vcpu_sregs_set(struct kvm_vm *vm, - uint32_t vcpuid, struct kvm_sregs *sregs) +void vcpu_sregs_set(struct kvm_vm *vm, uint32_t vcpuid, struct kvm_sregs *sregs) { int ret = _vcpu_sregs_set(vm, vcpuid, sregs); TEST_ASSERT(ret == 0, "KVM_RUN IOCTL failed, " "rc: %i errno: %i", ret, errno); } -int _vcpu_sregs_set(struct kvm_vm *vm, - uint32_t vcpuid, struct kvm_sregs *sregs) +int _vcpu_sregs_set(struct kvm_vm *vm, uint32_t vcpuid, struct kvm_sregs *sregs) { struct vcpu *vcpu = vcpu_find(vm, vcpuid); int ret; TEST_ASSERT(vcpu != NULL, "vcpu not found, vcpuid: %u", vcpuid); - /* Get the regs. */ return ioctl(vcpu->fd, KVM_SET_SREGS, sregs); } -/* VCPU Ioctl +/* + * VCPU Ioctl * * Input Args: * vm - Virtual Machine @@ -1435,8 +1238,8 @@ int _vcpu_sregs_set(struct kvm_vm *vm, * * Issues an arbitrary ioctl on a VCPU fd. */ -void vcpu_ioctl(struct kvm_vm *vm, - uint32_t vcpuid, unsigned long cmd, void *arg) +void vcpu_ioctl(struct kvm_vm *vm, uint32_t vcpuid, + unsigned long cmd, void *arg) { struct vcpu *vcpu = vcpu_find(vm, vcpuid); int ret; @@ -1448,7 +1251,8 @@ void vcpu_ioctl(struct kvm_vm *vm, cmd, ret, errno, strerror(errno)); } -/* VM Ioctl +/* + * VM Ioctl * * Input Args: * vm - Virtual Machine @@ -1468,7 +1272,8 @@ void vm_ioctl(struct kvm_vm *vm, unsigned long cmd, void *arg) cmd, ret, errno, strerror(errno)); } -/* VM Dump +/* + * VM Dump * * Input Args: * vm - Virtual Machine @@ -1515,38 +1320,6 @@ void vm_dump(FILE *stream, struct kvm_vm *vm, uint8_t indent) vcpu_dump(stream, vm, vcpu->id, indent + 2); } -/* VM VCPU Dump - * - * Input Args: - * vm - Virtual Machine - * vcpuid - VCPU ID - * indent - Left margin indent amount - * - * Output Args: - * stream - Output FILE stream - * - * Return: None - * - * Dumps the current state of the VCPU specified by vcpuid, within the VM - * given by vm, to the FILE stream given by stream. - */ -void vcpu_dump(FILE *stream, struct kvm_vm *vm, - uint32_t vcpuid, uint8_t indent) -{ - struct kvm_regs regs; - struct kvm_sregs sregs; - - fprintf(stream, "%*scpuid: %u\n", indent, "", vcpuid); - - fprintf(stream, "%*sregs:\n", indent + 2, ""); - vcpu_regs_get(vm, vcpuid, ®s); - regs_dump(stream, ®s, indent + 4); - - fprintf(stream, "%*ssregs:\n", indent + 2, ""); - vcpu_sregs_get(vm, vcpuid, &sregs); - sregs_dump(stream, &sregs, indent + 4); -} - /* Known KVM exit reasons */ static struct exit_reason { unsigned int reason; @@ -1577,7 +1350,8 @@ static struct exit_reason { #endif }; -/* Exit Reason String +/* + * Exit Reason String * * Input Args: * exit_reason - Exit reason @@ -1603,7 +1377,8 @@ const char *exit_reason_str(unsigned int exit_reason) return "Unknown"; } -/* Physical Page Allocate +/* + * Physical Page Allocate * * Input Args: * vm - Virtual Machine @@ -1620,8 +1395,8 @@ const char *exit_reason_str(unsigned int exit_reason) * and its address is returned. A TEST_ASSERT failure occurs if no * page is available at or above paddr_min. */ -vm_paddr_t vm_phy_page_alloc(struct kvm_vm *vm, - vm_paddr_t paddr_min, uint32_t memslot) +vm_paddr_t vm_phy_page_alloc(struct kvm_vm *vm, vm_paddr_t paddr_min, + uint32_t memslot) { struct userspace_mem_region *region; sparsebit_idx_t pg; @@ -1631,17 +1406,15 @@ vm_paddr_t vm_phy_page_alloc(struct kvm_vm *vm, " paddr_min: 0x%lx page_size: 0x%x", paddr_min, vm->page_size); - /* Locate memory region. */ region = memslot2region(vm, memslot); - - /* Locate next available physical page at or above paddr_min. */ pg = paddr_min >> vm->page_shift; + /* Locate next available physical page at or above paddr_min. */ if (!sparsebit_is_set(region->unused_phy_pages, pg)) { pg = sparsebit_next_set(region->unused_phy_pages, pg); if (pg == 0) { fprintf(stderr, "No guest physical page available, " - "paddr_min: 0x%lx page_size: 0x%x memslot: %u", + "paddr_min: 0x%lx page_size: 0x%x memslot: %u\n", paddr_min, vm->page_size, memslot); fputs("---- vm dump ----\n", stderr); vm_dump(stderr, vm, 2); @@ -1655,7 +1428,8 @@ vm_paddr_t vm_phy_page_alloc(struct kvm_vm *vm, return pg * vm->page_size; } -/* Address Guest Virtual to Host Virtual +/* + * Address Guest Virtual to Host Virtual * * Input Args: * vm - Virtual Machine diff --git a/tools/testing/selftests/kvm/lib/kvm_util_internal.h b/tools/testing/selftests/kvm/lib/kvm_util_internal.h index 36367be0fe26..3702c560bbf2 100644 --- a/tools/testing/selftests/kvm/lib/kvm_util_internal.h +++ b/tools/testing/selftests/kvm/lib/kvm_util_internal.h @@ -11,18 +11,19 @@ #include "sparsebit.h" +#define KVM_DEV_PATH "/dev/kvm" + #ifndef BITS_PER_BYTE -#define BITS_PER_BYTE 8 +#define BITS_PER_BYTE 8 #endif #ifndef BITS_PER_LONG -#define BITS_PER_LONG (BITS_PER_BYTE * sizeof(long)) +#define BITS_PER_LONG (BITS_PER_BYTE * sizeof(long)) #endif #define DIV_ROUND_UP(n, d) (((n) + (d) - 1) / (d)) -#define BITS_TO_LONGS(nr) DIV_ROUND_UP(nr, BITS_PER_LONG) +#define BITS_TO_LONGS(nr) DIV_ROUND_UP(nr, BITS_PER_LONG) -/* Concrete definition of struct kvm_vm. */ struct userspace_mem_region { struct userspace_mem_region *next, *prev; struct kvm_userspace_memory_region region; @@ -53,7 +54,6 @@ struct kvm_vm { struct userspace_mem_region *userspace_mem_region_head; struct sparsebit *vpages_valid; struct sparsebit *vpages_mapped; - bool has_irqchip; bool pgd_created; vm_paddr_t pgd; @@ -61,13 +61,11 @@ struct kvm_vm { vm_vaddr_t tss; }; -struct vcpu *vcpu_find(struct kvm_vm *vm, - uint32_t vcpuid); -void vcpu_setup(struct kvm_vm *vm, int vcpuid, int pgd_memslot, int gdt_memslot); +struct vcpu *vcpu_find(struct kvm_vm *vm, uint32_t vcpuid); +void vcpu_setup(struct kvm_vm *vm, int vcpuid, int pgd_memslot, + int gdt_memslot); void virt_dump(FILE *stream, struct kvm_vm *vm, uint8_t indent); -void regs_dump(FILE *stream, struct kvm_regs *regs, - uint8_t indent); -void sregs_dump(FILE *stream, struct kvm_sregs *sregs, - uint8_t indent); +void regs_dump(FILE *stream, struct kvm_regs *regs, uint8_t indent); +void sregs_dump(FILE *stream, struct kvm_sregs *sregs, uint8_t indent); #endif /* SELFTEST_KVM_UTIL_INTERNAL_H */ diff --git a/tools/testing/selftests/kvm/lib/x86_64/processor.c b/tools/testing/selftests/kvm/lib/x86_64/processor.c index 79c2c5c203c0..67f84fbb0ca4 100644 --- a/tools/testing/selftests/kvm/lib/x86_64/processor.c +++ b/tools/testing/selftests/kvm/lib/x86_64/processor.c @@ -672,6 +672,102 @@ void vm_vcpu_add_default(struct kvm_vm *vm, uint32_t vcpuid, void *guest_code) vcpu_set_mp_state(vm, vcpuid, &mp_state); } +/* Allocate an instance of struct kvm_cpuid2 + * + * Input Args: None + * + * Output Args: None + * + * Return: A pointer to the allocated struct. The caller is responsible + * for freeing this struct. + * + * Since kvm_cpuid2 uses a 0-length array to allow a the size of the + * array to be decided at allocation time, allocation is slightly + * complicated. This function uses a reasonable default length for + * the array and performs the appropriate allocation. + */ +static struct kvm_cpuid2 *allocate_kvm_cpuid2(void) +{ + struct kvm_cpuid2 *cpuid; + int nent = 100; + size_t size; + + size = sizeof(*cpuid); + size += nent * sizeof(struct kvm_cpuid_entry2); + cpuid = malloc(size); + if (!cpuid) { + perror("malloc"); + abort(); + } + + cpuid->nent = nent; + + return cpuid; +} + +/* KVM Supported CPUID Get + * + * Input Args: None + * + * Output Args: + * + * Return: The supported KVM CPUID + * + * Get the guest CPUID supported by KVM. + */ +struct kvm_cpuid2 *kvm_get_supported_cpuid(void) +{ + static struct kvm_cpuid2 *cpuid; + int ret; + int kvm_fd; + + if (cpuid) + return cpuid; + + cpuid = allocate_kvm_cpuid2(); + kvm_fd = open(KVM_DEV_PATH, O_RDONLY); + if (kvm_fd < 0) + exit(KSFT_SKIP); + + ret = ioctl(kvm_fd, KVM_GET_SUPPORTED_CPUID, cpuid); + TEST_ASSERT(ret == 0, "KVM_GET_SUPPORTED_CPUID failed %d %d\n", + ret, errno); + + close(kvm_fd); + return cpuid; +} + +/* Locate a cpuid entry. + * + * Input Args: + * cpuid: The cpuid. + * function: The function of the cpuid entry to find. + * + * Output Args: None + * + * Return: A pointer to the cpuid entry. Never returns NULL. + */ +struct kvm_cpuid_entry2 * +kvm_get_supported_cpuid_index(uint32_t function, uint32_t index) +{ + struct kvm_cpuid2 *cpuid; + struct kvm_cpuid_entry2 *entry = NULL; + int i; + + cpuid = kvm_get_supported_cpuid(); + for (i = 0; i < cpuid->nent; i++) { + if (cpuid->entries[i].function == function && + cpuid->entries[i].index == index) { + entry = &cpuid->entries[i]; + break; + } + } + + TEST_ASSERT(entry, "Guest CPUID entry not found: (EAX=%x, ECX=%x).", + function, index); + return entry; +} + /* VM VCPU CPUID Set * * Input Args: @@ -698,6 +794,7 @@ void vcpu_set_cpuid(struct kvm_vm *vm, rc, errno); } + /* Create a VM with reasonable defaults * * Input Args: @@ -742,6 +839,154 @@ struct kvm_vm *vm_create_default(uint32_t vcpuid, uint64_t extra_mem_pages, return vm; } +/* VCPU Get MSR + * + * Input Args: + * vm - Virtual Machine + * vcpuid - VCPU ID + * msr_index - Index of MSR + * + * Output Args: None + * + * Return: On success, value of the MSR. On failure a TEST_ASSERT is produced. + * + * Get value of MSR for VCPU. + */ +uint64_t vcpu_get_msr(struct kvm_vm *vm, uint32_t vcpuid, uint64_t msr_index) +{ + struct vcpu *vcpu = vcpu_find(vm, vcpuid); + struct { + struct kvm_msrs header; + struct kvm_msr_entry entry; + } buffer = {}; + int r; + + TEST_ASSERT(vcpu != NULL, "vcpu not found, vcpuid: %u", vcpuid); + buffer.header.nmsrs = 1; + buffer.entry.index = msr_index; + r = ioctl(vcpu->fd, KVM_GET_MSRS, &buffer.header); + TEST_ASSERT(r == 1, "KVM_GET_MSRS IOCTL failed,\n" + " rc: %i errno: %i", r, errno); + + return buffer.entry.data; +} + +/* VCPU Set MSR + * + * Input Args: + * vm - Virtual Machine + * vcpuid - VCPU ID + * msr_index - Index of MSR + * msr_value - New value of MSR + * + * Output Args: None + * + * Return: On success, nothing. On failure a TEST_ASSERT is produced. + * + * Set value of MSR for VCPU. + */ +void vcpu_set_msr(struct kvm_vm *vm, uint32_t vcpuid, uint64_t msr_index, + uint64_t msr_value) +{ + struct vcpu *vcpu = vcpu_find(vm, vcpuid); + struct { + struct kvm_msrs header; + struct kvm_msr_entry entry; + } buffer = {}; + int r; + + TEST_ASSERT(vcpu != NULL, "vcpu not found, vcpuid: %u", vcpuid); + memset(&buffer, 0, sizeof(buffer)); + buffer.header.nmsrs = 1; + buffer.entry.index = msr_index; + buffer.entry.data = msr_value; + r = ioctl(vcpu->fd, KVM_SET_MSRS, &buffer.header); + TEST_ASSERT(r == 1, "KVM_SET_MSRS IOCTL failed,\n" + " rc: %i errno: %i", r, errno); +} + +/* VM VCPU Args Set + * + * Input Args: + * vm - Virtual Machine + * vcpuid - VCPU ID + * num - number of arguments + * ... - arguments, each of type uint64_t + * + * Output Args: None + * + * Return: None + * + * Sets the first num function input arguments to the values + * given as variable args. Each of the variable args is expected to + * be of type uint64_t. + */ +void vcpu_args_set(struct kvm_vm *vm, uint32_t vcpuid, unsigned int num, ...) +{ + va_list ap; + struct kvm_regs regs; + + TEST_ASSERT(num >= 1 && num <= 6, "Unsupported number of args,\n" + " num: %u\n", + num); + + va_start(ap, num); + vcpu_regs_get(vm, vcpuid, ®s); + + if (num >= 1) + regs.rdi = va_arg(ap, uint64_t); + + if (num >= 2) + regs.rsi = va_arg(ap, uint64_t); + + if (num >= 3) + regs.rdx = va_arg(ap, uint64_t); + + if (num >= 4) + regs.rcx = va_arg(ap, uint64_t); + + if (num >= 5) + regs.r8 = va_arg(ap, uint64_t); + + if (num >= 6) + regs.r9 = va_arg(ap, uint64_t); + + vcpu_regs_set(vm, vcpuid, ®s); + va_end(ap); +} + +/* + * VM VCPU Dump + * + * Input Args: + * vm - Virtual Machine + * vcpuid - VCPU ID + * indent - Left margin indent amount + * + * Output Args: + * stream - Output FILE stream + * + * Return: None + * + * Dumps the current state of the VCPU specified by vcpuid, within the VM + * given by vm, to the FILE stream given by stream. + */ +void vcpu_dump(FILE *stream, struct kvm_vm *vm, uint32_t vcpuid, uint8_t indent) +{ + struct kvm_regs regs; + struct kvm_sregs sregs; + + fprintf(stream, "%*scpuid: %u\n", indent, "", vcpuid); + + fprintf(stream, "%*sregs:\n", indent + 2, ""); + vcpu_regs_get(vm, vcpuid, ®s); + regs_dump(stream, ®s, indent + 4); + + fprintf(stream, "%*ssregs:\n", indent + 2, ""); + vcpu_sregs_get(vm, vcpuid, &sregs); + sregs_dump(stream, &sregs, indent + 4); +} + struct kvm_x86_state { struct kvm_vcpu_events events; struct kvm_mp_state mp_state; diff --git a/tools/testing/selftests/kvm/x86_64/dirty_log_test.c b/tools/testing/selftests/kvm/x86_64/dirty_log_test.c index 7cf3e4ae6046..395a6e07d37c 100644 --- a/tools/testing/selftests/kvm/x86_64/dirty_log_test.c +++ b/tools/testing/selftests/kvm/x86_64/dirty_log_test.c @@ -15,6 +15,7 @@ #include "test_util.h" #include "kvm_util.h" +#include "processor.h" #define DEBUG printf |