Re: [PATCH v2 2/4] pci: Support 64-bit address translation

[Thomas Huth <thuth@redhat.com>]

On Mon, 27 Apr 2015 13:32:31 +0530
Nikunj A Dadhania <nikunj@linux.vnet.ibm.com> wrote:

> Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
> ---
>  slof/fs/translate.fs | 6 ++----
>  1 file changed, 2 insertions(+), 4 deletions(-)
> 
> diff --git a/slof/fs/translate.fs b/slof/fs/translate.fs
> index e2633e5..9654f24 100644
> --- a/slof/fs/translate.fs
> +++ b/slof/fs/translate.fs
> @@ -33,11 +33,9 @@
>        dup l@ FF AND 0<> ( prop_type address data cfgspace_offset? )
>        3 pick 0= ( prop_type address data cfgspace_offset? reg_prop? )
>        AND NOT IF 
> -         2dup 8 + ( prop_type address data address data' )
> -         2dup l@ 2 pick 8 + l@ + <= -rot l@  >= and  IF
> +         2dup 4 + ( prop_type address data address data' )
> +         2dup @ 2 pick 8 + @ + <= -rot @  >= and  IF
>              l@ 03000000 and 18 rshift nip
> -            \ no 64bit translations supported pretend it is 32bit
> -            dup 3 = IF  1-  THEN
>              ( prop_type type )
>              swap drop ( type )
>              UNLOOP EXIT

Phew, translate-address stuff ... one of my "favorites" ;-)
I wonder whether this will break "legacy" code like board-js2x ...
there might have been a reason for this "pretend it is 32bit" hack
(I've put Adrian Reber on CC:, maybe he still remembers why this was
needed).

Anyway, I think we can fix that up as soon as somebody tries to run the
js2x code again (I still have a YDL PowerStation at home somewhere,
maybe I will have enough spare time to reactivate it one day).

And since your changes itself looks fine to me:

Reviewed-by: Thomas Huth <thuth@redhat.com>