Re: [PATCH] xen/mm: Improve message in populate physmap when the domain is direct mapped

[Andrew Cooper <andrew.cooper3@citrix.com>]

On 27/10/15 11:33, Julien Grall wrote:
> The current domain and the domain pointed by the variable "d" are not
> the same.
>
> However, when it's not possible to get a reference on the page, the
> target domain ID is not printed. This makes the message difficult to
> understand.
>
> Improve the message by printing the target domain ID.
>
> Signed-off-by: Julien Grall <julien.grall@citrix.com>

Reviewed-by: Andrew Cooper <andrew.cooper3@citrix.com>, with a
suggestion as well.

>
> ---
> Cc: Ian Campbell <ian.campbell@citrix.com>
> Cc: Jan Beulich <jbeulich@suse.com>
> Cc: Keir Fraser <keir@xen.org>
> Cc: Tim Deegan <tim@xen.org>
> ---
>  xen/common/memory.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/xen/common/memory.c b/xen/common/memory.c
> index f6aed0d..206955f 100644
> --- a/xen/common/memory.c
> +++ b/xen/common/memory.c
> @@ -141,7 +141,7 @@ static void populate_physmap(struct memop_args *a)
>                      {
>                          gdprintk(XENLOG_INFO,
>                                   "mfn %#"PRI_xen_pfn" doesn't belong to the"
> -                                 " domain\n", mfn);
> +                                 " domain %d\n", mfn, d->domain_id);

This could easily be shortened to "doesn't belong to d%d" which matches
our other domain identification.

~Andrew