On 2/9/21 8:29 PM, Mark Cave-Ayland wrote:
> The ESP device already keeps track of the remaining bytes left to transfer via
> its TC (transfer counter) register which is decremented for each byte that
> is transferred across the SCSI bus.
> 
> Switch the transfer logic to use the value of TC instead of dma_left and then
> remove dma_left completely, adding logic to the vmstate_esp post_load() 
> function
> to transfer the old dma_left value to the TC register during migration from
> older versions.
> 
> Signed-off-by: Mark Cave-Ayland <mark.cave-ayl...@ilande.co.uk>
> ---
>  hw/scsi/esp.c         | 47 ++++++++++++++++++++++++++++---------------
>  include/hw/scsi/esp.h |  5 +++--
>  2 files changed, 34 insertions(+), 18 deletions(-)

I dare to add:
Reviewed-by: Philippe Mathieu-Daudé <f4...@amsat.org>

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