Re: [PATCH] s390: uv: Add offset comments to UV query struct

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On Tue,  7 Dec 2021 16:05:10 +0000
Janosch Frank <frankja@xxxxxxxxxxxxx> wrote:

> Changes to the struct are easier to manage with offset comments so
> let's add some.
> 
> Signed-off-by: Janosch Frank <frankja@xxxxxxxxxxxxx>
> ---
>  arch/s390/include/asm/uv.h | 34 +++++++++++++++++-----------------
>  1 file changed, 17 insertions(+), 17 deletions(-)
> 
> diff --git a/arch/s390/include/asm/uv.h b/arch/s390/include/asm/uv.h
> index 72d3e49c2860..235bd5cc8289 100644
> --- a/arch/s390/include/asm/uv.h
> +++ b/arch/s390/include/asm/uv.h
> @@ -91,23 +91,23 @@ struct uv_cb_header {
>  
>  /* Query Ultravisor Information */
>  struct uv_cb_qui {
> -	struct uv_cb_header header;
> -	u64 reserved08;
> -	u64 inst_calls_list[4];
> -	u64 reserved30[2];
> -	u64 uv_base_stor_len;
> -	u64 reserved48;
> -	u64 conf_base_phys_stor_len;
> -	u64 conf_base_virt_stor_len;
> -	u64 conf_virt_var_stor_len;
> -	u64 cpu_stor_len;
> -	u32 reserved70[3];
> -	u32 max_num_sec_conf;
> -	u64 max_guest_stor_addr;
> -	u8  reserved88[158 - 136];
> -	u16 max_guest_cpu_id;
> -	u64 uv_feature_indications;
> -	u8  reserveda0[200 - 168];
> +	struct uv_cb_header header;		/* 0x0000 */
> +	u64 reserved08;				/* 0x0008 */
> +	u64 inst_calls_list[4];			/* 0x0010 */
> +	u64 reserved30[2];			/* 0x0030 */
> +	u64 uv_base_stor_len;			/* 0x0040 */
> +	u64 reserved48;				/* 0x0048 */
> +	u64 conf_base_phys_stor_len;		/* 0x0050 */
> +	u64 conf_base_virt_stor_len;		/* 0x0058 */
> +	u64 conf_virt_var_stor_len;		/* 0x0060 */
> +	u64 cpu_stor_len;			/* 0x0068 */
> +	u32 reserved70[3];			/* 0x0070 */
> +	u32 max_num_sec_conf;			/* 0x007c */
> +	u64 max_guest_stor_addr;		/* 0x0080 */
> +	u8  reserved88[158 - 136];		/* 0x0088 */
> +	u16 max_guest_cpu_id;			/* 0x009e */
> +	u64 uv_feature_indications;		/* 0x00a0 */
> +	u8  reserveda0[200 - 168];		/* 0x00a8 */

since you're changing stuff, maybe fix the name?
s/reserveda0/reserveda8/

with that fixed:

Reviewed-by: Claudio Imbrenda <imbrenda@xxxxxxxxxxxxx>

>  } __packed __aligned(8);
>  
>  /* Initialize Ultravisor */




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