linux-kernel - Re: [PATCH] mm, x86: Do not zero hugetlbfs pages at boot. -v2

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: <20130403140247.GJ16471@dhcp22.suse.cz>
Date:	Wed, 3 Apr 2013 16:02:47 +0200
From:	Michal Hocko <mhocko@...e.cz>
To:	Robin Holt <holt@....com>
Cc:	Cliff Wickman <cpw@....com>, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org, x86@...nel.org, wli@...omorphy.com
Subject: Re: [PATCH] mm, x86: Do not zero hugetlbfs pages at boot. -v2

On Tue 02-04-13 21:43:44, Robin Holt wrote:
[...]
> diff --git a/mm/hugetlb.c b/mm/hugetlb.c
> index ca9a7c6..7683f6a 100644
> --- a/mm/hugetlb.c
> +++ b/mm/hugetlb.c
> @@ -1185,7 +1185,7 @@ int __weak alloc_bootmem_huge_page(struct hstate *h)
>  	while (nr_nodes) {
>  		void *addr;
>  
> -		addr = __alloc_bootmem_node_nopanic(
> +		addr = __alloc_bootmem_node_nopanic_notzeroed(
>  				NODE_DATA(hstate_next_node_to_alloc(h,
>  						&node_states[N_MEMORY])),
>  				huge_page_size(h), huge_page_size(h), 0);

Ohh, and powerpc seems to have its own opinion how to allocate huge
pages. See arch/powerpc/mm/hugetlbpage.c

-- 
Michal Hocko
SUSE Labs
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/