linux-kernel - Re: "mm: use early_pfn_to_nid in page_ext

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20170630154416.GB9714@dhcp22.suse.cz>
Date:   Fri, 30 Jun 2017 17:44:16 +0200
From:   Michal Hocko <mhocko@...nel.org>
To:     Yang Shi <yang.shi@...aro.org>
Cc:     Joonsoo Kim <iamjoonsoo.kim@....com>,
        Mel Gorman <mgorman@...hsingularity.net>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Vlastimil Babka <vbabka@...e.cz>, linux-mm@...ck.org,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: "mm: use early_pfn_to_nid in page_ext_init" broken on some
 configurations?

On Fri 30-06-17 17:42:24, Michal Hocko wrote:
[...]
> diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
> index 16532fa0bb64..894697c1e6f5 100644
> --- a/include/linux/mmzone.h
> +++ b/include/linux/mmzone.h
> @@ -1055,6 +1055,7 @@ static inline struct zoneref *first_zones_zonelist(struct zonelist *zonelist,
>  	!defined(CONFIG_HAVE_MEMBLOCK_NODE_MAP)
>  static inline unsigned long early_pfn_to_nid(unsigned long pfn)
>  {
> +	BUILD_BUG_ON(!IS_ENABLED(CONFIG_NUMA));

Err, this should read BUILD_BUG_ON(IS_ENABLED(CONFIG_NUMA)) of course

>  	return 0;
>  }
>  #endif

-- 
Michal Hocko
SUSE Labs