diff options
| -rw-r--r-- | tools/testing/selftests/kvm/dirty_log_test.c | 13 | ||||
| -rw-r--r-- | tools/testing/selftests/kvm/include/kvm_util.h | 8 | ||||
| -rw-r--r-- | tools/testing/selftests/kvm/lib/kvm_util.c | 37 |
3 files changed, 51 insertions, 7 deletions
diff --git a/tools/testing/selftests/kvm/dirty_log_test.c b/tools/testing/selftests/kvm/dirty_log_test.c index e0f3337dfccb..edc5c071bf02 100644 --- a/tools/testing/selftests/kvm/dirty_log_test.c +++ b/tools/testing/selftests/kvm/dirty_log_test.c @@ -178,12 +178,11 @@ static void *vcpu_worker(void *data) return NULL; } -static void vm_dirty_log_verify(unsigned long *bmap) +static void vm_dirty_log_verify(enum vm_guest_mode mode, unsigned long *bmap) { + uint64_t step = vm_num_host_pages(mode, 1); uint64_t page; uint64_t *value_ptr; - uint64_t step = host_page_size >= guest_page_size ? 1 : - guest_page_size / host_page_size; for (page = 0; page < host_num_pages; page += step) { value_ptr = host_test_mem + page * host_page_size; @@ -289,14 +288,14 @@ static void run_test(enum vm_guest_mode mode, unsigned long iterations, * case where the size is not aligned to 64 pages. */ guest_num_pages = (1ul << (DIRTY_MEM_BITS - - vm_get_page_shift(vm))) + 16; + vm_get_page_shift(vm))) + 3; + guest_num_pages = vm_adjust_num_guest_pages(mode, guest_num_pages); #ifdef __s390x__ /* Round up to multiple of 1M (segment size) */ guest_num_pages = (guest_num_pages + 0xff) & ~0xffUL; #endif host_page_size = getpagesize(); - host_num_pages = (guest_num_pages * guest_page_size) / host_page_size + - !!((guest_num_pages * guest_page_size) % host_page_size); + host_num_pages = vm_num_host_pages(mode, guest_num_pages); if (!phys_offset) { guest_test_phys_mem = (vm_get_max_gfn(vm) - @@ -367,7 +366,7 @@ static void run_test(enum vm_guest_mode mode, unsigned long iterations, kvm_vm_clear_dirty_log(vm, TEST_MEM_SLOT_INDEX, bmap, 0, host_num_pages); #endif - vm_dirty_log_verify(bmap); + vm_dirty_log_verify(mode, bmap); iteration++; sync_global_to_guest(vm, iteration); } diff --git a/tools/testing/selftests/kvm/include/kvm_util.h b/tools/testing/selftests/kvm/include/kvm_util.h index ae0d14c2540a..1dc13bfa88b7 100644 --- a/tools/testing/selftests/kvm/include/kvm_util.h +++ b/tools/testing/selftests/kvm/include/kvm_util.h @@ -164,6 +164,14 @@ unsigned int vm_get_page_size(struct kvm_vm *vm); unsigned int vm_get_page_shift(struct kvm_vm *vm); unsigned int vm_get_max_gfn(struct kvm_vm *vm); +unsigned int vm_num_host_pages(enum vm_guest_mode mode, unsigned int num_guest_pages); +unsigned int vm_num_guest_pages(enum vm_guest_mode mode, unsigned int num_host_pages); +static inline unsigned int +vm_adjust_num_guest_pages(enum vm_guest_mode mode, unsigned int num_guest_pages) +{ + return vm_num_guest_pages(mode, vm_num_host_pages(mode, num_guest_pages)); +} + 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/lib/kvm_util.c b/tools/testing/selftests/kvm/lib/kvm_util.c index 1b133583d6c7..67f5dc9a6a32 100644 --- a/tools/testing/selftests/kvm/lib/kvm_util.c +++ b/tools/testing/selftests/kvm/lib/kvm_util.c @@ -580,6 +580,10 @@ void vm_userspace_mem_region_add(struct kvm_vm *vm, size_t huge_page_size = KVM_UTIL_PGS_PER_HUGEPG * vm->page_size; size_t alignment; + TEST_ASSERT(vm_adjust_num_guest_pages(vm->mode, npages) == npages, + "Number of guest pages is not compatible with the host. " + "Try npages=%d", vm_adjust_num_guest_pages(vm->mode, npages)); + TEST_ASSERT((guest_paddr % vm->page_size) == 0, "Guest physical " "address not on a page boundary.\n" " guest_paddr: 0x%lx vm->page_size: 0x%x", @@ -1701,3 +1705,36 @@ unsigned int vm_get_max_gfn(struct kvm_vm *vm) { return vm->max_gfn; } + +static unsigned int vm_calc_num_pages(unsigned int num_pages, + unsigned int page_shift, + unsigned int new_page_shift, + bool ceil) +{ + unsigned int n = 1 << (new_page_shift - page_shift); + + if (page_shift >= new_page_shift) + return num_pages * (1 << (page_shift - new_page_shift)); + + return num_pages / n + !!(ceil && num_pages % n); +} + +static inline int getpageshift(void) +{ + return __builtin_ffs(getpagesize()) - 1; +} + +unsigned int +vm_num_host_pages(enum vm_guest_mode mode, unsigned int num_guest_pages) +{ + return vm_calc_num_pages(num_guest_pages, + vm_guest_mode_params[mode].page_shift, + getpageshift(), true); +} + +unsigned int +vm_num_guest_pages(enum vm_guest_mode mode, unsigned int num_host_pages) +{ + return vm_calc_num_pages(num_host_pages, getpageshift(), + vm_guest_mode_params[mode].page_shift, false); +} |