From: Andrea Arcangeli <aarcange@redhat.com>
To: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Izik Eidus <ieidus@redhat.com>,
linux-kernel@vger.kernel.org, kvm@vger.kernel.org,
linux-mm@kvack.org, avi@redhat.com, chrisw@redhat.com,
mtosatti@redhat.com, hugh@veritas.com,
kamezawa.hiroyu@jp.fujitsu.com
Subject: Re: [PATCH 4/4] add ksm kernel shared memory driver.
Date: Thu, 16 Apr 2009 13:39:31 +0200 [thread overview]
Message-ID: <20090416113931.GF4524@random.random> (raw)
In-Reply-To: <49E67F17.1070805@goop.org>
On Wed, Apr 15, 2009 at 05:43:03PM -0700, Jeremy Fitzhardinge wrote:
> Shouldn't that be kmap_atomic's job anyway? Otherwise it would be hard to
No because those are full noops in no-highmem kernels. I commented in
other email why I think it's safe thanks to the wrprotect + smp tlb
flush of the userland PTE.
WARNING: multiple messages have this Message-ID (diff)
From: Andrea Arcangeli <aarcange@redhat.com>
To: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Izik Eidus <ieidus@redhat.com>,
linux-kernel@vger.kernel.org, kvm@vger.kernel.org,
linux-mm@kvack.org, avi@redhat.com, chrisw@redhat.com,
mtosatti@redhat.com, hugh@veritas.com,
kamezawa.hiroyu@jp.fujitsu.com
Subject: Re: [PATCH 4/4] add ksm kernel shared memory driver.
Date: Thu, 16 Apr 2009 13:39:31 +0200 [thread overview]
Message-ID: <20090416113931.GF4524@random.random> (raw)
In-Reply-To: <49E67F17.1070805@goop.org>
On Wed, Apr 15, 2009 at 05:43:03PM -0700, Jeremy Fitzhardinge wrote:
> Shouldn't that be kmap_atomic's job anyway? Otherwise it would be hard to
No because those are full noops in no-highmem kernels. I commented in
other email why I think it's safe thanks to the wrprotect + smp tlb
flush of the userland PTE.
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next prev parent reply other threads:[~2009-04-16 11:40 UTC|newest]
Thread overview: 106+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-09 3:58 [PATCH 0/4] ksm - dynamic page sharing driver for linux v3 Izik Eidus
2009-04-09 3:58 ` Izik Eidus
2009-04-09 3:58 ` [PATCH 1/4] MMU_NOTIFIERS: add set_pte_at_notify() Izik Eidus
2009-04-09 3:58 ` Izik Eidus
2009-04-09 3:58 ` [PATCH 2/4] add page_wrprotect(): write protecting page Izik Eidus
2009-04-09 3:58 ` Izik Eidus
2009-04-09 3:58 ` [PATCH 3/4] add replace_page(): change the page pte is pointing to Izik Eidus
2009-04-09 3:58 ` Izik Eidus
2009-04-09 3:58 ` [PATCH 4/4] add ksm kernel shared memory driver Izik Eidus
2009-04-09 3:58 ` Izik Eidus
2009-04-14 22:09 ` Andrew Morton
2009-04-14 22:09 ` Andrew Morton
2009-04-14 22:09 ` Andrew Morton
2009-04-15 22:37 ` Izik Eidus
2009-04-15 22:37 ` Izik Eidus
2009-04-15 22:50 ` Andrew Morton
2009-04-15 22:50 ` Andrew Morton
2009-04-15 23:21 ` Andrea Arcangeli
2009-04-15 23:21 ` Andrea Arcangeli
2009-04-16 0:43 ` Jeremy Fitzhardinge
2009-04-16 0:43 ` Jeremy Fitzhardinge
2009-04-16 0:57 ` Izik Eidus
2009-04-16 0:57 ` Izik Eidus
2009-04-16 11:39 ` Andrea Arcangeli [this message]
2009-04-16 11:39 ` Andrea Arcangeli
2009-04-16 16:08 ` Jeremy Fitzhardinge
2009-04-16 16:08 ` Jeremy Fitzhardinge
2009-04-18 14:58 ` Andrea Arcangeli
2009-04-18 14:58 ` Andrea Arcangeli
2009-04-14 22:09 ` [PATCH 3/4] add replace_page(): change the page pte is pointing to Andrew Morton
2009-04-14 22:09 ` Andrew Morton
2009-04-14 22:09 ` Andrew Morton
2009-04-15 11:25 ` Andrea Arcangeli
2009-04-15 11:25 ` Andrea Arcangeli
2009-04-15 22:48 ` Izik Eidus
2009-04-15 22:48 ` Izik Eidus
2009-04-14 22:09 ` [PATCH 0/4] ksm - dynamic page sharing driver for linux v3 Andrew Morton
2009-04-14 22:09 ` Andrew Morton
2009-04-14 22:09 ` Andrew Morton
2009-04-16 17:55 ` Nick Piggin
2009-04-16 17:55 ` Nick Piggin
2009-04-16 18:25 ` Izik Eidus
2009-04-16 18:25 ` Izik Eidus
2009-04-17 7:08 ` Jared Hulbert
2009-04-17 7:08 ` Jared Hulbert
2009-04-21 2:59 ` Nick Piggin
2009-04-21 2:59 ` Nick Piggin
-- strict thread matches above, loose matches on Subject: below --
2009-04-04 14:35 [PATCH 0/4] ksm - dynamic page sharing driver for linux v2 Izik Eidus
2009-04-04 14:35 ` [PATCH 1/4] MMU_NOTIFIERS: add set_pte_at_notify() Izik Eidus
2009-04-04 14:35 ` [PATCH 2/4] add page_wrprotect(): write protecting page Izik Eidus
2009-04-04 14:35 ` [PATCH 3/4] add replace_page(): change the page pte is pointing to Izik Eidus
2009-04-04 14:35 ` [PATCH 4/4] add ksm kernel shared memory driver Izik Eidus
2009-04-04 14:35 ` Izik Eidus
2009-04-06 9:13 ` Andrey Panin
2009-04-06 9:13 ` Andrey Panin
2009-04-06 10:58 ` Izik Eidus
2009-04-06 10:58 ` Izik Eidus
2009-04-06 10:58 ` Izik Eidus
2009-03-30 23:59 [PATCH 0/4] ksm - dynamic page sharing driver for linux Izik Eidus
2009-03-30 23:59 ` [PATCH 1/4] MMU_NOTIFIERS: add set_pte_at_notify() Izik Eidus
2009-03-30 23:59 ` [PATCH 2/4] add page_wrprotect(): write protecting page Izik Eidus
2009-03-30 23:59 ` [PATCH 3/4] add replace_page(): change the page pte is pointing to Izik Eidus
2009-03-30 23:59 ` [PATCH 4/4] add ksm kernel shared memory driver Izik Eidus
2009-03-30 23:59 ` Izik Eidus
2009-03-31 2:12 ` Anthony Liguori
2009-03-31 2:12 ` Anthony Liguori
2009-03-31 12:24 ` Izik Eidus
2009-03-31 12:24 ` Izik Eidus
2009-03-31 13:31 ` Anthony Liguori
2009-03-31 13:31 ` Anthony Liguori
2009-03-31 14:25 ` Andrea Arcangeli
2009-03-31 14:25 ` Andrea Arcangeli
2009-03-31 14:37 ` Anthony Liguori
2009-03-31 14:37 ` Anthony Liguori
2009-03-31 15:02 ` Andrea Arcangeli
2009-03-31 15:02 ` Andrea Arcangeli
2009-03-31 15:09 ` Anthony Liguori
2009-03-31 15:09 ` Anthony Liguori
2009-03-31 15:18 ` Andrea Arcangeli
2009-03-31 15:18 ` Andrea Arcangeli
2009-03-31 15:54 ` Anthony Liguori
2009-03-31 15:54 ` Anthony Liguori
2009-03-31 16:25 ` Andrea Arcangeli
2009-03-31 16:25 ` Andrea Arcangeli
2009-03-31 16:51 ` Anthony Liguori
2009-03-31 16:51 ` Anthony Liguori
2009-03-31 17:11 ` Andrea Arcangeli
2009-03-31 17:11 ` Andrea Arcangeli
2009-04-01 22:54 ` Izik Eidus
2009-04-01 22:54 ` Izik Eidus
2009-04-02 0:31 ` Anthony Liguori
2009-04-02 0:31 ` Anthony Liguori
2009-04-02 0:48 ` Chris Wright
2009-04-02 0:48 ` Chris Wright
2009-04-02 1:22 ` Chris Wright
2009-04-02 1:22 ` Chris Wright
2009-04-02 2:36 ` Anthony Liguori
2009-04-02 2:36 ` Anthony Liguori
2009-04-02 7:24 ` Avi Kivity
2009-04-02 7:24 ` Avi Kivity
2009-04-02 9:38 ` Andrea Arcangeli
2009-04-02 9:38 ` Andrea Arcangeli
2009-04-02 11:23 ` Izik Eidus
2009-04-02 11:23 ` Izik Eidus
2009-03-31 2:15 ` KAMEZAWA Hiroyuki
2009-03-31 2:15 ` KAMEZAWA Hiroyuki
2009-03-31 12:21 ` Izik Eidus
2009-03-31 12:21 ` Izik Eidus
2009-03-31 23:57 ` KAMEZAWA Hiroyuki
2009-03-31 23:57 ` KAMEZAWA Hiroyuki
2009-04-01 17:28 ` Izik Eidus
2009-04-01 17:28 ` Izik Eidus
2009-03-31 20:52 ` Andrea Arcangeli
2009-03-31 20:52 ` Andrea Arcangeli
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