mm/migrate: add migrate-shared test for migrate_vma_*()

	hmm_buffer_free(buffer);

}

/*

 * Migrate anonymous shared memory to device private memory.

 */

TEST_F(hmm, migrate_shared)

{

	struct hmm_buffer *buffer;

	unsigned long npages;

	unsigned long size;

	int ret;

	npages = ALIGN(HMM_BUFFER_SIZE, self->page_size) >> self->page_shift;

	ASSERT_NE(npages, 0);

	size = npages << self->page_shift;

	buffer = malloc(sizeof(*buffer));

	ASSERT_NE(buffer, NULL);

	buffer->fd = -1;

	buffer->size = size;

	buffer->mirror = malloc(size);

	ASSERT_NE(buffer->mirror, NULL);

	buffer->ptr = mmap(NULL, size,

			   PROT_READ | PROT_WRITE,

			   MAP_SHARED | MAP_ANONYMOUS,

			   buffer->fd, 0);

	ASSERT_NE(buffer->ptr, MAP_FAILED);

	/* Migrate memory to device. */

	ret = hmm_dmirror_cmd(self->fd, HMM_DMIRROR_MIGRATE, buffer, npages);

	ASSERT_EQ(ret, -ENOENT);

	hmm_buffer_free(buffer);

}

/*

 * Try to migrate various memory types to device private memory.

 */