linux-kernel - Re: [PATCH] hugetlb: call arch_prepare

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: <1217951014.13182.12.camel@localhost.localdomain>
Date:	Tue, 05 Aug 2008 10:43:34 -0500
From:	Adam Litke <agl@...ibm.com>
To:	Gerald Schaefer <gerald.schaefer@...ibm.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	linux-s390@...r.kernel.org, schwidefsky@...ibm.com,
	heiko.carstens@...ibm.com, Nishanth Aravamudan <nacc@...ibm.com>
Subject: Re: [PATCH] hugetlb: call arch_prepare_hugepage() for surplus pages

On Tue, 2008-08-05 at 17:29 +0200, Gerald Schaefer wrote:
> From: Gerald Schaefer <gerald.schaefer@...ibm.com>
> 
> The s390 software large page emulation implements shared page tables
> by using page->index of the first tail page from a compound large page
> to store page table information. This is set up in arch_prepare_hugepage(),
> which is called from alloc_fresh_huge_page_node().
> 
> A similar call to arch_prepare_hugepage() is missing for surplus large
> pages that are allocated in alloc_buddy_huge_page(), which breaks the
> software emulation mode for (surplus) large pages on s390. This patch
> adds the missing call to arch_prepare_hugepage(). It will have no effect
> on other architectures where arch_prepare_hugepage() is a nop.
> 
> Acked-by: Martin Schwidefsky <schwidefsky@...ibm.com>
> Signed-off-by: Gerald Schaefer <gerald.schaefer@...ibm.com>

Seems fine.

Acked-by: Adam Litke <agl@...ibm.com>

-- 
Adam Litke - (agl at us.ibm.com)
IBM Linux Technology Center

--
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/