diff options
| author | Andrew Jones <drjones@redhat.com> | 2020-02-14 15:59:20 +0100 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-02-24 20:05:23 +0100 |
| commit | 87a802d93e7ef55216d8884fdf7e5f491a6fe501 (patch) | |
| tree | 48eea7b90298e9a8eeb56bb61ee4bc39026b72aa /tools/testing/selftests/kvm/include/kvm_util.h | |
| parent | 377a41c9ef84181bff5a3af2da9dfd21d6a08911 (diff) | |
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/include/kvm_util.h')
| -rw-r--r-- | tools/testing/selftests/kvm/include/kvm_util.h | 8 |
1 files changed, 8 insertions, 0 deletions
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); |