Re: [Qemu-devel] [RFC 12/13] dp8393x: put DMA temp buffer in the state, not in the stack

[Thomas Huth <huth@tuxfamily.org>]

On 08.06.2018 22:05, Laurent Vivier wrote:
> It's only 32 bytes, and this simplifies the dp8393x_get()/
> dp8393x_put() interface.

Maybe not worth the effort ... or do you need this in a later patch,
too? If so, please mention it in the patch description here.

> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
> ---
>  hw/net/dp8393x.c | 107 ++++++++++++++++++++++++++-----------------------------
>  1 file changed, 51 insertions(+), 56 deletions(-)
> 
> diff --git a/hw/net/dp8393x.c b/hw/net/dp8393x.c
> index 5061474e6b..40e5f8257b 100644
> --- a/hw/net/dp8393x.c
> +++ b/hw/net/dp8393x.c
> @@ -168,6 +168,7 @@ typedef struct dp8393xState {
>  
>      /* Temporaries */
>      uint8_t tx_buffer[0x10000];
> +    uint16_t data[16];

Why 16? The biggest array that you replaced has only 12 entries...

Also, while you're at it, maybe change the name of the variable
("dma_data"?) or add a comment with a short explanation ?

 Thomas