From: Mel Gorman <mel@csn.ul.ie>
To: Rik van Riel <riel@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>,
linux-mm@kvack.org, Marcelo Tosatti <mtosatti@redhat.com>,
Adam Litke <agl@us.ibm.com>, Avi Kivity <avi@redhat.com>,
Izik Eidus <ieidus@redhat.com>,
Hugh Dickins <hugh.dickins@tiscali.co.uk>,
Nick Piggin <npiggin@suse.de>,
Dave Hansen <dave@linux.vnet.ibm.com>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Ingo Molnar <mingo@elte.hu>, Mike Travis <travis@sgi.com>,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
Christoph Lameter <cl@linux-foundation.org>,
Chris Wright <chrisw@sous-sol.org>,
Andrew Morton <akpm@linux-foundation.org>,
bpicco@redhat.com, Christoph Hellwig <hch@infradead.org>,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
Balbir Singh <balbir@linux.vnet.ibm.com>,
Arnd Bergmann <arnd@arndb.de>
Subject: Re: [PATCH 25 of 31] transparent hugepage core
Date: Thu, 28 Jan 2010 18:07:42 +0000 [thread overview]
Message-ID: <20100128180742.GG7139@csn.ul.ie> (raw)
In-Reply-To: <4B61D1E6.6020507@redhat.com>
On Thu, Jan 28, 2010 at 01:05:26PM -0500, Rik van Riel wrote:
> On 01/28/2010 12:57 PM, Mel Gorman wrote:
>> Sorry for the long delay getting to this patch. I ran out of beans the
>> first time around. Unlike Rik, I can't handle 31 patches in one sitting.
>>
>> On Thu, Jan 28, 2010 at 03:33:39PM +0100, Andrea Arcangeli wrote:
>>> From: Andrea Arcangeli<aarcange@redhat.com>
>>>
>>> Lately I've been working to make KVM use hugepages transparently
>>> without the usual restrictions of hugetlbfs. Some of the restrictions
>>> I'd like to see removed:
>>>
>>> 1) hugepages have to be swappable or the guest physical memory remains
>>> locked in RAM and can't be paged out to swap
>>>
>>
>> It occurs to me that this infrastructure should be reusable to make allow
>> optional swapping of hugetlbfs. I haven't investigated the possibility properly
>> but it should be doable as a mount option with maybe a boot-parameter for
>> shared memory.
>
> I agree that would be nice. However, as you noticed above this
> patch set is quite large already. Merging the infrastructure from
> hugetlb and the anonymous hugepages is probably better done in a
> follow up patch series, since the two are pretty different beasts
> at this point.
>
Fully agreed on all counts.
--
Mel Gorman
Part-time Phd Student Linux Technology Center
University of Limerick IBM Dublin Software Lab
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next prev parent reply other threads:[~2010-01-28 18:07 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-28 14:33 [PATCH 00 of 31] Transparent Hugepage support #8 Andrea Arcangeli
2010-01-28 14:33 ` [PATCH 01 of 31] define MADV_HUGEPAGE Andrea Arcangeli
2010-01-28 20:30 ` Arnd Bergmann
2010-01-28 14:33 ` [PATCH 02 of 31] compound_lock Andrea Arcangeli
2010-01-28 14:33 ` [PATCH 03 of 31] alter compound get_page/put_page Andrea Arcangeli
2010-01-28 14:33 ` [PATCH 04 of 31] update futex compound knowledge Andrea Arcangeli
2010-01-28 16:11 ` Mel Gorman
2010-02-01 7:45 ` Andrea Arcangeli
2010-01-28 14:33 ` [PATCH 05 of 31] fix bad_page to show the real reason the page is bad Andrea Arcangeli
2010-01-28 14:33 ` [PATCH 06 of 31] clear compound mapping Andrea Arcangeli
2010-01-28 14:33 ` [PATCH 07 of 31] add native_set_pmd_at Andrea Arcangeli
2010-01-28 14:33 ` [PATCH 08 of 31] add pmd paravirt ops Andrea Arcangeli
2010-01-28 14:33 ` [PATCH 09 of 31] no paravirt version of pmd ops Andrea Arcangeli
2010-01-28 14:33 ` [PATCH 10 of 31] export maybe_mkwrite Andrea Arcangeli
2010-01-28 14:33 ` [PATCH 11 of 31] comment reminder in destroy_compound_page Andrea Arcangeli
2010-01-28 14:33 ` [PATCH 12 of 31] config_transparent_hugepage Andrea Arcangeli
2010-01-28 14:33 ` [PATCH 13 of 31] special pmd_trans_* functions Andrea Arcangeli
2010-01-28 14:33 ` [PATCH 14 of 31] add pmd mangling generic functions Andrea Arcangeli
2010-01-28 14:33 ` [PATCH 15 of 31] add pmd mangling functions to x86 Andrea Arcangeli
2010-01-28 14:33 ` [PATCH 16 of 31] bail out gup_fast on splitting pmd Andrea Arcangeli
2010-01-28 14:33 ` [PATCH 17 of 31] pte alloc trans splitting Andrea Arcangeli
2010-01-28 14:33 ` [PATCH 18 of 31] add pmd mmu_notifier helpers Andrea Arcangeli
2010-01-28 14:33 ` [PATCH 19 of 31] clear page compound Andrea Arcangeli
2010-01-28 14:33 ` [PATCH 20 of 31] add pmd_huge_pte to mm_struct Andrea Arcangeli
2010-01-28 14:33 ` [PATCH 21 of 31] split_huge_page_mm/vma Andrea Arcangeli
2010-01-28 14:33 ` [PATCH 22 of 31] split_huge_page paging Andrea Arcangeli
2010-01-28 14:33 ` [PATCH 23 of 31] clear_copy_huge_page Andrea Arcangeli
2010-01-28 14:33 ` [PATCH 24 of 31] kvm mmu transparent hugepage support Andrea Arcangeli
2010-01-28 14:33 ` [PATCH 25 of 31] transparent hugepage core Andrea Arcangeli
2010-01-28 17:57 ` Mel Gorman
2010-01-28 18:05 ` Rik van Riel
2010-01-28 18:07 ` Mel Gorman [this message]
2010-01-28 22:36 ` Andrea Arcangeli
2010-01-28 22:43 ` Andrea Arcangeli
2010-01-29 0:00 ` Andrea Arcangeli
2010-01-29 15:29 ` Mel Gorman
2010-01-29 18:59 ` Andrea Arcangeli
2010-01-31 20:24 ` Andrea Arcangeli
2010-02-01 13:27 ` Andrea Arcangeli
2010-02-01 13:53 ` Mel Gorman
2010-01-28 14:33 ` [PATCH 26 of 31] madvise(MADV_HUGEPAGE) Andrea Arcangeli
2010-01-28 14:33 ` [PATCH 27 of 31] pmd_trans_huge migrate bugcheck Andrea Arcangeli
2010-01-28 14:33 ` [PATCH 28 of 31] memcg compound Andrea Arcangeli
2010-01-28 14:33 ` [PATCH 29 of 31] memcg huge memory Andrea Arcangeli
2010-01-28 14:33 ` [PATCH 30 of 31] transparent hugepage vmstat Andrea Arcangeli
2010-01-28 14:33 ` [PATCH 31 of 31] khugepaged Andrea Arcangeli
2010-01-28 17:05 ` [PATCH 00 of 31] Transparent Hugepage support #8 Andrea Arcangeli
-- strict thread matches above, loose matches on Subject: below --
2010-01-26 13:51 [PATCH 00 of 31] Transparent Hugepage support #7 Andrea Arcangeli
2010-01-26 13:52 ` [PATCH 25 of 31] transparent hugepage core Andrea Arcangeli
2010-01-26 22:34 ` Rik van Riel
2010-01-25 17:18 [PATCH 00 of 31] Transparent Hugepage support #6 Andrea Arcangeli
2010-01-25 17:19 ` [PATCH 25 of 31] transparent hugepage core Andrea Arcangeli
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