Re: [Qemu-devel] [PATCH v3] arch_init/ram_load: add error message for block length mismatch

[Juan Quintela <quintela@redhat.com>]

Alon Levy <alevy@redhat.com> wrote:
> Makes it easier to debug situations where the source and target have
> different ram blocks in a device and migration fails due to that, for
> instance a BAR size change on a PCI device.
>
> Signed-off-by: Alon Levy <alevy@redhat.com>
> ---
> v3: use RAM_ADDR_FMT
>
>  arch_init.c | 3 +++
>  1 file changed, 3 insertions(+)
>

Reviewed-by: Juan Quintela <quintela@redhat.com>

will be included in next pull request. thanks.

> diff --git a/arch_init.c b/arch_init.c
> index 49c5dc2..cd27fcf 100644
> --- a/arch_init.c
> +++ b/arch_init.c
> @@ -808,6 +808,9 @@ static int ram_load(QEMUFile *f, void *opaque, int version_id)
>                      QTAILQ_FOREACH(block, &ram_list.blocks, next) {
>                          if (!strncmp(id, block->idstr, sizeof(id))) {
>                              if (block->length != length) {
> +                                fprintf(stderr, "Length mismatch: %s: %ld "
> +                                        "in != " RAM_ADDR_FMT "\n", id, length,
> +                                        block->length);
>                                  ret =  -EINVAL;
>                                  goto done;
>                              }