| Message ID | 20210225055940.18748-4-wangyanan55@huawei.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Some improvement and a new test for kvm page table | expand |
On Thu, Feb 25, 2021 at 01:59:36PM +0800, Yanan Wang wrote: > For generality and conciseness, make an API which can be used in all > kvm libs and selftests to get vm guest mode strings. And the index i > is checked in the API in case of possiable faults. > > Signed-off-by: Yanan Wang <wangyanan55@huawei.com> > --- > .../testing/selftests/kvm/include/kvm_util.h | 4 +-- > tools/testing/selftests/kvm/lib/kvm_util.c | 29 ++++++++++++------- > 2 files changed, 19 insertions(+), 14 deletions(-) > > diff --git a/tools/testing/selftests/kvm/include/kvm_util.h b/tools/testing/selftests/kvm/include/kvm_util.h > index 2d7eb6989e83..f52a7492f47f 100644 > --- a/tools/testing/selftests/kvm/include/kvm_util.h > +++ b/tools/testing/selftests/kvm/include/kvm_util.h > @@ -68,9 +68,6 @@ enum vm_guest_mode { > #define MIN_PAGE_SIZE (1U << MIN_PAGE_SHIFT) > #define PTES_PER_MIN_PAGE ptes_per_page(MIN_PAGE_SIZE) > > -#define vm_guest_mode_string(m) vm_guest_mode_string[m] > -extern const char * const vm_guest_mode_string[]; > - > struct vm_guest_mode_params { > unsigned int pa_bits; > unsigned int va_bits; > @@ -84,6 +81,7 @@ int vm_enable_cap(struct kvm_vm *vm, struct kvm_enable_cap *cap); > int vcpu_enable_cap(struct kvm_vm *vm, uint32_t vcpu_id, > struct kvm_enable_cap *cap); > void vm_enable_dirty_ring(struct kvm_vm *vm, uint32_t ring_size); > +const char *vm_guest_mode_string(uint32_t i); > > struct kvm_vm *vm_create(enum vm_guest_mode mode, uint64_t phy_pages, int perm); > void kvm_vm_free(struct kvm_vm *vmp); > diff --git a/tools/testing/selftests/kvm/lib/kvm_util.c b/tools/testing/selftests/kvm/lib/kvm_util.c > index d787cb802b4a..cc22c4ab7d67 100644 > --- a/tools/testing/selftests/kvm/lib/kvm_util.c > +++ b/tools/testing/selftests/kvm/lib/kvm_util.c > @@ -141,17 +141,24 @@ static void vm_open(struct kvm_vm *vm, int perm) > "rc: %i errno: %i", vm->fd, errno); > } > > -const char * const vm_guest_mode_string[] = { > - "PA-bits:52, VA-bits:48, 4K pages", > - "PA-bits:52, VA-bits:48, 64K pages", > - "PA-bits:48, VA-bits:48, 4K pages", > - "PA-bits:48, VA-bits:48, 64K pages", > - "PA-bits:40, VA-bits:48, 4K pages", > - "PA-bits:40, VA-bits:48, 64K pages", > - "PA-bits:ANY, VA-bits:48, 4K pages", > -}; > -_Static_assert(sizeof(vm_guest_mode_string)/sizeof(char *) == NUM_VM_MODES, > - "Missing new mode strings?"); > +const char *vm_guest_mode_string(uint32_t i) > +{ > + static const char * const strings[] = { > + [VM_MODE_P52V48_4K] = "PA-bits:52, VA-bits:48, 4K pages", > + [VM_MODE_P52V48_64K] = "PA-bits:52, VA-bits:48, 64K pages", > + [VM_MODE_P48V48_4K] = "PA-bits:48, VA-bits:48, 4K pages", > + [VM_MODE_P48V48_64K] = "PA-bits:48, VA-bits:48, 64K pages", > + [VM_MODE_P40V48_4K] = "PA-bits:40, VA-bits:48, 4K pages", > + [VM_MODE_P40V48_64K] = "PA-bits:40, VA-bits:48, 64K pages", > + [VM_MODE_PXXV48_4K] = "PA-bits:ANY, VA-bits:48, 4K pages", > + }; > + _Static_assert(sizeof(strings)/sizeof(char *) == NUM_VM_MODES, > + "Missing new mode strings?"); > + > + TEST_ASSERT(i < NUM_VM_MODES, "Guest mode ID %d too big", i); > + > + return strings[i]; > +} > > const struct vm_guest_mode_params vm_guest_mode_params[] = { > { 52, 48, 0x1000, 12 }, > -- > 2.19.1 > Reviewed-by: Andrew Jones <drjones@redhat.com>
On 2021/2/25 13:59, Yanan Wang wrote: > For generality and conciseness, make an API which can be used in all > kvm libs and selftests to get vm guest mode strings. And the index i > is checked in the API in case of possiable faults. > > Signed-off-by: Yanan Wang <wangyanan55@huawei.com> And here too, will include Suggested-by: Sean Christopherson <seanjc@google.com>. > --- > .../testing/selftests/kvm/include/kvm_util.h | 4 +-- > tools/testing/selftests/kvm/lib/kvm_util.c | 29 ++++++++++++------- > 2 files changed, 19 insertions(+), 14 deletions(-) > > diff --git a/tools/testing/selftests/kvm/include/kvm_util.h b/tools/testing/selftests/kvm/include/kvm_util.h > index 2d7eb6989e83..f52a7492f47f 100644 > --- a/tools/testing/selftests/kvm/include/kvm_util.h > +++ b/tools/testing/selftests/kvm/include/kvm_util.h > @@ -68,9 +68,6 @@ enum vm_guest_mode { > #define MIN_PAGE_SIZE (1U << MIN_PAGE_SHIFT) > #define PTES_PER_MIN_PAGE ptes_per_page(MIN_PAGE_SIZE) > > -#define vm_guest_mode_string(m) vm_guest_mode_string[m] > -extern const char * const vm_guest_mode_string[]; > - > struct vm_guest_mode_params { > unsigned int pa_bits; > unsigned int va_bits; > @@ -84,6 +81,7 @@ int vm_enable_cap(struct kvm_vm *vm, struct kvm_enable_cap *cap); > int vcpu_enable_cap(struct kvm_vm *vm, uint32_t vcpu_id, > struct kvm_enable_cap *cap); > void vm_enable_dirty_ring(struct kvm_vm *vm, uint32_t ring_size); > +const char *vm_guest_mode_string(uint32_t i); > > struct kvm_vm *vm_create(enum vm_guest_mode mode, uint64_t phy_pages, int perm); > void kvm_vm_free(struct kvm_vm *vmp); > diff --git a/tools/testing/selftests/kvm/lib/kvm_util.c b/tools/testing/selftests/kvm/lib/kvm_util.c > index d787cb802b4a..cc22c4ab7d67 100644 > --- a/tools/testing/selftests/kvm/lib/kvm_util.c > +++ b/tools/testing/selftests/kvm/lib/kvm_util.c > @@ -141,17 +141,24 @@ static void vm_open(struct kvm_vm *vm, int perm) > "rc: %i errno: %i", vm->fd, errno); > } > > -const char * const vm_guest_mode_string[] = { > - "PA-bits:52, VA-bits:48, 4K pages", > - "PA-bits:52, VA-bits:48, 64K pages", > - "PA-bits:48, VA-bits:48, 4K pages", > - "PA-bits:48, VA-bits:48, 64K pages", > - "PA-bits:40, VA-bits:48, 4K pages", > - "PA-bits:40, VA-bits:48, 64K pages", > - "PA-bits:ANY, VA-bits:48, 4K pages", > -}; > -_Static_assert(sizeof(vm_guest_mode_string)/sizeof(char *) == NUM_VM_MODES, > - "Missing new mode strings?"); > +const char *vm_guest_mode_string(uint32_t i) > +{ > + static const char * const strings[] = { > + [VM_MODE_P52V48_4K] = "PA-bits:52, VA-bits:48, 4K pages", > + [VM_MODE_P52V48_64K] = "PA-bits:52, VA-bits:48, 64K pages", > + [VM_MODE_P48V48_4K] = "PA-bits:48, VA-bits:48, 4K pages", > + [VM_MODE_P48V48_64K] = "PA-bits:48, VA-bits:48, 64K pages", > + [VM_MODE_P40V48_4K] = "PA-bits:40, VA-bits:48, 4K pages", > + [VM_MODE_P40V48_64K] = "PA-bits:40, VA-bits:48, 64K pages", > + [VM_MODE_PXXV48_4K] = "PA-bits:ANY, VA-bits:48, 4K pages", > + }; > + _Static_assert(sizeof(strings)/sizeof(char *) == NUM_VM_MODES, > + "Missing new mode strings?"); > + > + TEST_ASSERT(i < NUM_VM_MODES, "Guest mode ID %d too big", i); > + > + return strings[i]; > +} > > const struct vm_guest_mode_params vm_guest_mode_params[] = { > { 52, 48, 0x1000, 12 },
diff --git a/tools/testing/selftests/kvm/include/kvm_util.h b/tools/testing/selftests/kvm/include/kvm_util.h index 2d7eb6989e83..f52a7492f47f 100644 --- a/tools/testing/selftests/kvm/include/kvm_util.h +++ b/tools/testing/selftests/kvm/include/kvm_util.h @@ -68,9 +68,6 @@ enum vm_guest_mode { #define MIN_PAGE_SIZE (1U << MIN_PAGE_SHIFT) #define PTES_PER_MIN_PAGE ptes_per_page(MIN_PAGE_SIZE) -#define vm_guest_mode_string(m) vm_guest_mode_string[m] -extern const char * const vm_guest_mode_string[]; - struct vm_guest_mode_params { unsigned int pa_bits; unsigned int va_bits; @@ -84,6 +81,7 @@ int vm_enable_cap(struct kvm_vm *vm, struct kvm_enable_cap *cap); int vcpu_enable_cap(struct kvm_vm *vm, uint32_t vcpu_id, struct kvm_enable_cap *cap); void vm_enable_dirty_ring(struct kvm_vm *vm, uint32_t ring_size); +const char *vm_guest_mode_string(uint32_t i); struct kvm_vm *vm_create(enum vm_guest_mode mode, uint64_t phy_pages, int perm); void kvm_vm_free(struct kvm_vm *vmp); diff --git a/tools/testing/selftests/kvm/lib/kvm_util.c b/tools/testing/selftests/kvm/lib/kvm_util.c index d787cb802b4a..cc22c4ab7d67 100644 --- a/tools/testing/selftests/kvm/lib/kvm_util.c +++ b/tools/testing/selftests/kvm/lib/kvm_util.c @@ -141,17 +141,24 @@ static void vm_open(struct kvm_vm *vm, int perm) "rc: %i errno: %i", vm->fd, errno); } -const char * const vm_guest_mode_string[] = { - "PA-bits:52, VA-bits:48, 4K pages", - "PA-bits:52, VA-bits:48, 64K pages", - "PA-bits:48, VA-bits:48, 4K pages", - "PA-bits:48, VA-bits:48, 64K pages", - "PA-bits:40, VA-bits:48, 4K pages", - "PA-bits:40, VA-bits:48, 64K pages", - "PA-bits:ANY, VA-bits:48, 4K pages", -}; -_Static_assert(sizeof(vm_guest_mode_string)/sizeof(char *) == NUM_VM_MODES, - "Missing new mode strings?"); +const char *vm_guest_mode_string(uint32_t i) +{ + static const char * const strings[] = { + [VM_MODE_P52V48_4K] = "PA-bits:52, VA-bits:48, 4K pages", + [VM_MODE_P52V48_64K] = "PA-bits:52, VA-bits:48, 64K pages", + [VM_MODE_P48V48_4K] = "PA-bits:48, VA-bits:48, 4K pages", + [VM_MODE_P48V48_64K] = "PA-bits:48, VA-bits:48, 64K pages", + [VM_MODE_P40V48_4K] = "PA-bits:40, VA-bits:48, 4K pages", + [VM_MODE_P40V48_64K] = "PA-bits:40, VA-bits:48, 64K pages", + [VM_MODE_PXXV48_4K] = "PA-bits:ANY, VA-bits:48, 4K pages", + }; + _Static_assert(sizeof(strings)/sizeof(char *) == NUM_VM_MODES, + "Missing new mode strings?"); + + TEST_ASSERT(i < NUM_VM_MODES, "Guest mode ID %d too big", i); + + return strings[i]; +} const struct vm_guest_mode_params vm_guest_mode_params[] = { { 52, 48, 0x1000, 12 },
For generality and conciseness, make an API which can be used in all kvm libs and selftests to get vm guest mode strings. And the index i is checked in the API in case of possiable faults. Signed-off-by: Yanan Wang <wangyanan55@huawei.com> --- .../testing/selftests/kvm/include/kvm_util.h | 4 +-- tools/testing/selftests/kvm/lib/kvm_util.c | 29 ++++++++++++------- 2 files changed, 19 insertions(+), 14 deletions(-)