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| author | Andrew Jones <drjones@redhat.com> | 2020-02-14 17:59:20 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-02-24 22:05:23 +0300 |
| commit | 87a802d93e7ef55216d8884fdf7e5f491a6fe501 (patch) | |
| tree | 48eea7b90298e9a8eeb56bb61ee4bc39026b72aa /tools/testing/selftests/kvm/dirty_log_test.c | |
| parent | 377a41c9ef84181bff5a3af2da9dfd21d6a08911 (diff) | |
| download | linux-87a802d93e7ef55216d8884fdf7e5f491a6fe501.tar.xz | |
KVM: selftests: Introduce num-pages conversion utilities
Guests and hosts don't have to have the same page size. This means
calculations are necessary when selecting the number of guest pages
to allocate in order to ensure the number is compatible with the
host. Provide utilities to help with those calculations and apply
them where appropriate.
We also revert commit bffed38d4fb5 ("kvm: selftests: aarch64:
dirty_log_test: fix unaligned memslot size") and then use
vm_adjust_num_guest_pages() there instead.
Signed-off-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'tools/testing/selftests/kvm/dirty_log_test.c')
| -rw-r--r-- | tools/testing/selftests/kvm/dirty_log_test.c | 13 |
1 files changed, 6 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); } |