[Crash-utility] Subject: [PATCH] s390x: fix vtop for 1M pages

[Michael Holzheu]

Hi Petr,

On Mon, 2012-04-16 at 10:31 +0200, Petr Tesarik wrote:
> Hi Michael,
> 
> I'm not a z/Series guru, but it seems to me that the address should not be 
> returned directly, but rather assigned to the phys_addr output parameter.

The fix looks good, thanks! Dave could you please add the patch to the
next release?

Michael

> Petr Tesarik
> SUSE Linux
> differences between files attachment
> (s390x-fix-vtop-for-1M-pages.patch)
> Subject: [PATCH] s390x: fix vtop for 1M pages
> 
> It seems to me that the address should not be returned directly,
> but rather assigned to the phys_addr output parameter.
> 
> Signed-off-by: Petr Tesarik <ptesarik at suse.cz>
> 
> ---
>  s390x.c |    6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)
> 
> --- a/s390x.c
> +++ b/s390x.c
> @@ -614,9 +614,11 @@ int s390x_vtop(ulong table, ulong vaddr,
>  	}
> 
>  	/* Check if this is a large page. */
> -	if (entry & 0x400ULL)
> +	if (entry & 0x400ULL) {
>  		/* Add the 1MB page offset and return the final value. */
> -		return table + (vaddr & 0xfffffULL);
> +		*phys_addr = table + (vaddr & 0xfffffULL);
> +		return TRUE;
> +	}
> 
>  	/* Get the page table entry */
>  	entry = _kl_pg_table_deref_s390x(vaddr, entry & ~0x7ffULL);