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Re: [Xen-devel] [PATCH 08/27] xen/arm: hsr_iabt: Document RES0 field



Hi,

On 14/08/17 15:23, Julien Grall wrote:
> Signed-off-by: Julien Grall <julien.grall@xxxxxxx>

Reviewed-by: Andre Przywara <andre.przywara@xxxxxxx>

> ---
>  xen/include/asm-arm/processor.h | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/xen/include/asm-arm/processor.h b/xen/include/asm-arm/processor.h
> index ab5225fa6c..51645f08c0 100644
> --- a/xen/include/asm-arm/processor.h
> +++ b/xen/include/asm-arm/processor.h
> @@ -505,9 +505,9 @@ union hsr {
>  
>      struct hsr_iabt {
>          unsigned long ifsc:6;  /* Instruction fault status code */
> -        unsigned long res0:1;
> +        unsigned long res0:1;  /* RES0 */
>          unsigned long s1ptw:1; /* Stage 2 fault during stage 1 translation */
> -        unsigned long res1:1;
> +        unsigned long res1:1;  /* RES0 */
>          unsigned long eat:1;   /* External abort type */
>          unsigned long res2:15;

As we are at it: newer versions of the ARM ARM have the "FnV" bit here
at bit 10, so would it be worth to update it as:

           unsigned long fnv:1;   /* FAR not Valid */
           unsigned long res2:14;

Cheers,
Andre.

>          unsigned long len:1;   /* Instruction length */
> 

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