Re: [Qemu-block] [PATCH v3 5/6] tests/virtio-blk: change assert on data_size in virtio_blk_request()

[Thomas Huth]

On 2019-02-06 12:27, Stefano Garzarella wrote:
> The size of data in the virtio_blk_request must be a multiple
> of 512 bytes for IN and OUT requests, or a multiple of the size
> of struct virtio_blk_discard_write_zeroes for DISCARD and
> WRITE_ZEROES requests.
> 
> Reviewed-by: Michael S. Tsirkin <address@hidden>
> Reviewed-by: Stefan Hajnoczi <address@hidden>
> Signed-off-by: Stefano Garzarella <address@hidden>
> ---
>  tests/virtio-blk-test.c | 15 ++++++++++++++-
>  1 file changed, 14 insertions(+), 1 deletion(-)
> 
> diff --git a/tests/virtio-blk-test.c b/tests/virtio-blk-test.c
> index 04c608764b..0739498da7 100644
> --- a/tests/virtio-blk-test.c
> +++ b/tests/virtio-blk-test.c
> @@ -144,7 +144,20 @@ static uint64_t virtio_blk_request(QGuestAllocator 
> *alloc, QVirtioDevice *d,
>      uint64_t addr;
>      uint8_t status = 0xFF;
>  
> -    g_assert_cmpuint(data_size % 512, ==, 0);
> +    switch (req->type) {
> +    case VIRTIO_BLK_T_IN:
> +    case VIRTIO_BLK_T_OUT:
> +        g_assert_cmpuint(data_size % 512, ==, 0);
> +        break;
> +    case VIRTIO_BLK_T_DISCARD:
> +    case VIRTIO_BLK_T_WRITE_ZEROES:
> +        g_assert_cmpuint(data_size %
> +                         sizeof(struct virtio_blk_discard_write_zeroes), ==, 
> 0);
> +        break;
> +    default:
> +        g_assert_cmpuint(data_size, ==, 0);
> +    }
> +
>      addr = guest_alloc(alloc, sizeof(*req) + data_size);
>  
>      virtio_blk_fix_request(d, req);

Reviewed-by: Thomas Huth <address@hidden>