Re: [PATCH v5 2/3] hw/mem: Use memory_region_size() in cxl_type3

[Gregory Price <gregory.price@memverge.com>]

On Fri, Apr 21, 2023 at 05:08:26PM +0100, Jonathan Cameron wrote:
> Accessors prefered over direct use of int128_get64() as they
> clamp out of range values.  None are expected here but
> cleaner to always use the accessor than mix and match.
> 
> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
> 
> ---
> v5: New patch to tidy up existing instance before adding more of
>     them.
>   - Use memory_region_size() to access the size of memory regions.
>     We may eventually need to allow for larger addresses but it
>     is unlikely to be a problem any time soon.
> ---
>  hw/mem/cxl_type3.c | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/hw/mem/cxl_type3.c b/hw/mem/cxl_type3.c
> index 1bd5963a3f..2db756851c 100644
> --- a/hw/mem/cxl_type3.c
> +++ b/hw/mem/cxl_type3.c
> @@ -52,7 +52,7 @@ static int ct3_build_cdat_entries_for_mr(CDATSubHeader **cdat_table,
>          .DSMADhandle = dsmad_handle,
>          .flags = CDAT_DSMAS_FLAG_NV,
>          .DPA_base = 0,
> -        .DPA_length = int128_get64(mr->size),
> +        .DPA_length = memory_region_size(mr),
>      };
>  
>      /* For now, no memory side cache, plausiblish numbers */
> @@ -133,7 +133,7 @@ static int ct3_build_cdat_entries_for_mr(CDATSubHeader **cdat_table,
>          /* Reserved - the non volatile from DSMAS matters */
>          .EFI_memory_type_attr = 2,
>          .DPA_offset = 0,
> -        .DPA_length = int128_get64(mr->size),
> +        .DPA_length = memory_region_size(mr),
>      };
>  
>      /* Header always at start of structure */
> @@ -698,7 +698,7 @@ MemTxResult cxl_type3_read(PCIDevice *d, hwaddr host_addr, uint64_t *data,
>          return MEMTX_ERROR;
>      }
>  
> -    if (dpa_offset > int128_get64(mr->size)) {
> +    if (dpa_offset > memory_region_size(mr)) {
>          return MEMTX_ERROR;
>      }
>  
> @@ -721,7 +721,7 @@ MemTxResult cxl_type3_write(PCIDevice *d, hwaddr host_addr, uint64_t data,
>          return MEMTX_OK;
>      }
>  
> -    if (dpa_offset > int128_get64(mr->size)) {
> +    if (dpa_offset > memory_region_size(mr)) {
>          return MEMTX_OK;
>      }
>      return address_space_write(&ct3d->hostmem_as, dpa_offset, attrs,
> -- 
> 2.37.2
> 

lgtm

Reviewed-by: Gregory Price <gregory.price@memverge.com>