From: Andi Kleen <andi@firstfloor.org>
To: Mel Gorman <mel@csn.ul.ie>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
Andi Kleen <andi@firstfloor.org>,
Andrew Morton <akpm@linux-foundation.org>,
Wu Fengguang <fengguang.wu@intel.com>
Subject: Re: [PATCH 1/7] hugetlb, rmap: add reverse mapping for hugepage
Date: Thu, 13 May 2010 18:14:15 +0200 [thread overview]
Message-ID: <20100513161415.GC28226@basil.fritz.box> (raw)
In-Reply-To: <20100513152737.GE27949@csn.ul.ie>
> I think what you're getting with this is the ability to unmap MAP_PRIVATE pages
> from one process but if there are multiple processes, the second process could
> still end up referencing the poisoned MAP_PRIVATE page. Is this accurate? Even
> if it is, I guess it's still an improvement over what currently happens.
The only real requirement is that all PTEs pointing to that page
get replaced by poisoned PTEs.
(that's essentially always "late kill" mode)
-Andi
--
ak@linux.intel.com -- Speaking for myself only.
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next prev parent reply other threads:[~2010-05-13 16:14 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-13 7:55 [PATCH 0/7] HWPOISON for hugepage (v5) Naoya Horiguchi
2010-05-13 7:55 ` [PATCH 1/7] hugetlb, rmap: add reverse mapping for hugepage Naoya Horiguchi
2010-05-13 9:18 ` Andi Kleen
2010-05-17 4:53 ` Naoya Horiguchi
2010-05-13 15:27 ` Mel Gorman
2010-05-13 16:14 ` Andi Kleen [this message]
2010-05-14 7:46 ` Naoya Horiguchi
2010-05-14 9:54 ` Mel Gorman
2010-05-24 7:15 ` Naoya Horiguchi
2010-05-25 10:59 ` Mel Gorman
2010-05-26 6:51 ` Naoya Horiguchi
2010-05-26 9:03 ` Mel Gorman
2010-05-26 9:19 ` Andi Kleen
2010-05-26 9:44 ` Mel Gorman
2010-05-26 9:58 ` Andi Kleen
2010-05-13 7:55 ` [PATCH 2/7] HWPOISON, hugetlb: enable error handling path " Naoya Horiguchi
2010-05-13 7:55 ` [PATCH 3/7] HWPOISON, hugetlb: set/clear PG_hwpoison bits on hugepage Naoya Horiguchi
2010-05-13 7:55 ` [PATCH 4/7] HWPOISON, hugetlb: maintain mce_bad_pages in handling hugepage error Naoya Horiguchi
2010-05-13 7:55 ` [PATCH 5/7] HWPOISON, hugetlb: isolate corrupted hugepage Naoya Horiguchi
2010-05-13 7:55 ` [PATCH 6/7] HWPOISON, hugetlb: detect hwpoison in hugetlb code Naoya Horiguchi
2010-05-13 7:55 ` [PATCH 7/7] HWPOISON, hugetlb: support hwpoison injection for hugepage Naoya Horiguchi
2010-05-13 14:27 ` [PATCH 0/7] HWPOISON for hugepage (v5) Mel Gorman
2010-05-14 7:35 ` Naoya Horiguchi
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