Re: [Qemu-devel] [PATCH for-3.0 3/9] migration: fix incorrect bitmap size calculation

[Juan Quintela]

Peter Xu <address@hidden> wrote:
> The calculation on size of received bitmap is incorrect for postcopy
> recovery.  Here we wanted to let the size to cover all the valid bits in
> the bitmap, we should use DIV_ROUND_UP() instead of a division.
>
> For example, a RAMBlock with size=4K (which contains only one single 4K
> page) will have nbits=1, then nbits/8=0, then the real bitmap won't be
> sent to source at all.
>
> Signed-off-by: Peter Xu <address@hidden>

Reviewed-by: Juan Quintela <address@hidden>