[Skiboot] [PATCH 1/2] debug_descriptor: Claim reserved field for host kernel log buffer

[Vasant Hegde]

On 05/24/2018 07:07 AM, Joel Stanley wrote:
> Signed-off-by: Joel Stanley <joel at jms.id.au>
> ---
> We could bump the version instead, but I don't think there's any call
> for that.
> 
> Another option would be to re-use some of the memcons fields that are
> currently only used by FSP.
> 
> A third option would be to use this field to link to yet another debug
> structure to allow for future flexibility.
> ---
>   include/skiboot.h | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/include/skiboot.h b/include/skiboot.h
> index b4bdf37795dd..7f3740965412 100644
> --- a/include/skiboot.h
> +++ b/include/skiboot.h
> @@ -75,7 +75,7 @@ struct debug_descriptor {
>   					 * low 4 bits driver (e.g. uart). */
>   	u8	state_flags; /* various state flags - OPAL_BOOT_COMPLETE etc */
>   	u16	reserved2;
> -	u32	reserved[2];
> +	u64	log_buf_phys;		/* Pointer to kernel log buffer */

May be increment DEBUG_DESC_VERSION as well? So that user can identify whether 
this field
is supported or not?

-Vasant