From: Andrea Arcangeli <andrea@qumranet.com>
To: Christoph Lameter <clameter@sgi.com>
Cc: Robin Holt <holt@sgi.com>, Avi Kivity <avi@qumranet.com>,
Izik Eidus <izike@qumranet.com>,
kvm-devel@lists.sourceforge.net,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
steiner@sgi.com, linux-kernel@vger.kernel.org,
linux-mm@kvack.org, daniel.blueman@quadrics.com
Subject: Re: [patch 2/3] mmu_notifier: Callbacks to invalidate address ranges
Date: Thu, 31 Jan 2008 13:31:18 +0100 [thread overview]
Message-ID: <20080131123118.GK7185@v2.random> (raw)
In-Reply-To: <20080131045812.785269387@sgi.com>
On Wed, Jan 30, 2008 at 08:57:52PM -0800, Christoph Lameter wrote:
> @@ -211,7 +212,9 @@ asmlinkage long sys_remap_file_pages(uns
> spin_unlock(&mapping->i_mmap_lock);
> }
>
> + mmu_notifier(invalidate_range_begin, mm, start, start + size, 0);
> err = populate_range(mm, vma, start, size, pgoff);
> + mmu_notifier(invalidate_range_end, mm, 0);
> if (!err && !(flags & MAP_NONBLOCK)) {
> if (unlikely(has_write_lock)) {
> downgrade_write(&mm->mmap_sem);
This can't be enough for GRU, infact it can't work for KVM either. You
got 1) to have some invalidate_page for GRU before freeing the page,
and 2) to pass start, end to range_end (if you want kvm to use it
instead of invalidate_page).
mremap still missing as a whole.
WARNING: multiple messages have this Message-ID (diff)
From: Andrea Arcangeli <andrea-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
To: Christoph Lameter <clameter-sJ/iWh9BUns@public.gmane.org>
Cc: Peter Zijlstra
<a.p.zijlstra-/NLkJaSkS4VmR6Xm/wNWPw@public.gmane.org>,
linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org,
steiner-sJ/iWh9BUns@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Avi Kivity <avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org>,
kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org,
daniel.blueman-xqY44rlHlBpWk0Htik3J/w@public.gmane.org,
Robin Holt <holt-sJ/iWh9BUns@public.gmane.org>
Subject: Re: [patch 2/3] mmu_notifier: Callbacks to invalidate address ranges
Date: Thu, 31 Jan 2008 13:31:18 +0100 [thread overview]
Message-ID: <20080131123118.GK7185@v2.random> (raw)
In-Reply-To: <20080131045812.785269387-sJ/iWh9BUns@public.gmane.org>
On Wed, Jan 30, 2008 at 08:57:52PM -0800, Christoph Lameter wrote:
> @@ -211,7 +212,9 @@ asmlinkage long sys_remap_file_pages(uns
> spin_unlock(&mapping->i_mmap_lock);
> }
>
> + mmu_notifier(invalidate_range_begin, mm, start, start + size, 0);
> err = populate_range(mm, vma, start, size, pgoff);
> + mmu_notifier(invalidate_range_end, mm, 0);
> if (!err && !(flags & MAP_NONBLOCK)) {
> if (unlikely(has_write_lock)) {
> downgrade_write(&mm->mmap_sem);
This can't be enough for GRU, infact it can't work for KVM either. You
got 1) to have some invalidate_page for GRU before freeing the page,
and 2) to pass start, end to range_end (if you want kvm to use it
instead of invalidate_page).
mremap still missing as a whole.
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WARNING: multiple messages have this Message-ID (diff)
From: Andrea Arcangeli <andrea@qumranet.com>
To: Christoph Lameter <clameter@sgi.com>
Cc: Robin Holt <holt@sgi.com>, Avi Kivity <avi@qumranet.com>,
Izik Eidus <izike@qumranet.com>,
kvm-devel@lists.sourceforge.net,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
steiner@sgi.com, linux-kernel@vger.kernel.org,
linux-mm@kvack.org, daniel.blueman@quadrics.com
Subject: Re: [patch 2/3] mmu_notifier: Callbacks to invalidate address ranges
Date: Thu, 31 Jan 2008 13:31:18 +0100 [thread overview]
Message-ID: <20080131123118.GK7185@v2.random> (raw)
In-Reply-To: <20080131045812.785269387@sgi.com>
On Wed, Jan 30, 2008 at 08:57:52PM -0800, Christoph Lameter wrote:
> @@ -211,7 +212,9 @@ asmlinkage long sys_remap_file_pages(uns
> spin_unlock(&mapping->i_mmap_lock);
> }
>
> + mmu_notifier(invalidate_range_begin, mm, start, start + size, 0);
> err = populate_range(mm, vma, start, size, pgoff);
> + mmu_notifier(invalidate_range_end, mm, 0);
> if (!err && !(flags & MAP_NONBLOCK)) {
> if (unlikely(has_write_lock)) {
> downgrade_write(&mm->mmap_sem);
This can't be enough for GRU, infact it can't work for KVM either. You
got 1) to have some invalidate_page for GRU before freeing the page,
and 2) to pass start, end to range_end (if you want kvm to use it
instead of invalidate_page).
mremap still missing as a whole.
--
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next prev parent reply other threads:[~2008-01-31 12:31 UTC|newest]
Thread overview: 181+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-31 4:57 [patch 0/3] [RFC] MMU Notifiers V4 Christoph Lameter
2008-01-31 4:57 ` Christoph Lameter
2008-01-31 4:57 ` [patch 1/3] mmu_notifier: Core code Christoph Lameter
2008-01-31 4:57 ` Christoph Lameter
2008-02-01 1:56 ` Jack Steiner
2008-02-01 1:56 ` Jack Steiner
2008-02-01 1:56 ` Jack Steiner
2008-02-01 2:24 ` Robin Holt
2008-02-01 2:24 ` Robin Holt
2008-02-01 2:24 ` Robin Holt
2008-02-01 2:37 ` Jack Steiner
2008-02-01 2:37 ` Jack Steiner
2008-02-01 2:37 ` Jack Steiner
2008-02-01 2:39 ` Christoph Lameter
2008-02-01 2:39 ` Christoph Lameter
2008-02-01 2:39 ` Christoph Lameter
2008-02-01 2:31 ` Robin Holt
2008-02-01 2:31 ` Robin Holt
2008-02-01 2:31 ` Robin Holt
2008-02-01 2:39 ` Christoph Lameter
2008-02-01 2:39 ` Christoph Lameter
2008-02-01 2:39 ` Christoph Lameter
2008-02-01 2:47 ` Robin Holt
2008-02-01 2:47 ` Robin Holt
2008-02-01 2:47 ` Robin Holt
2008-02-01 3:01 ` Christoph Lameter
2008-02-01 3:01 ` Christoph Lameter
2008-02-01 3:01 ` Christoph Lameter
2008-02-01 3:01 ` Jack Steiner
2008-02-01 3:01 ` Jack Steiner
2008-02-01 3:01 ` Jack Steiner
2008-02-01 3:03 ` Christoph Lameter
2008-02-01 3:03 ` Christoph Lameter
2008-02-01 3:03 ` Christoph Lameter
2008-02-01 3:52 ` Robin Holt
2008-02-01 3:52 ` Robin Holt
2008-02-01 3:52 ` Robin Holt
2008-02-01 3:58 ` Christoph Lameter
2008-02-01 3:58 ` Christoph Lameter
2008-02-01 3:58 ` Christoph Lameter
2008-02-01 4:15 ` Robin Holt
2008-02-01 4:15 ` Robin Holt
2008-02-01 4:15 ` Robin Holt
2008-02-03 1:33 ` Andrea Arcangeli
2008-02-03 1:33 ` Andrea Arcangeli
2008-02-03 1:33 ` Andrea Arcangeli
2008-02-04 19:13 ` Christoph Lameter
2008-02-04 19:13 ` Christoph Lameter
2008-02-04 19:13 ` Christoph Lameter
2008-01-31 4:57 ` [patch 2/3] mmu_notifier: Callbacks to invalidate address ranges Christoph Lameter
2008-01-31 4:57 ` Christoph Lameter
2008-01-31 12:31 ` Andrea Arcangeli [this message]
2008-01-31 12:31 ` Andrea Arcangeli
2008-01-31 12:31 ` Andrea Arcangeli
2008-01-31 20:07 ` Christoph Lameter
2008-01-31 20:07 ` Christoph Lameter
2008-01-31 20:07 ` Christoph Lameter
2008-01-31 22:01 ` mmu_notifier: close hole in fork Christoph Lameter
2008-01-31 22:01 ` Christoph Lameter
2008-01-31 22:01 ` Christoph Lameter
2008-01-31 22:16 ` mmu_notifier: reduce size of mm_struct if !CONFIG_MMU_NOTIFIER Christoph Lameter
2008-01-31 22:16 ` Christoph Lameter
2008-01-31 22:16 ` Christoph Lameter
2008-01-31 22:21 ` mmu_notifier: Move mmu_notifier_release up to get rid of the invalidat_all() callback Christoph Lameter
2008-01-31 22:21 ` Christoph Lameter
2008-01-31 22:21 ` Christoph Lameter
2008-02-01 0:13 ` Andrea Arcangeli
2008-02-01 0:13 ` Andrea Arcangeli
2008-02-01 0:13 ` Andrea Arcangeli
2008-02-01 1:52 ` Christoph Lameter
2008-02-01 1:52 ` Christoph Lameter
2008-02-01 1:52 ` Christoph Lameter
2008-02-01 1:57 ` mmu_notifier: invalidate_range for move_page_tables Christoph Lameter
2008-02-01 1:57 ` Christoph Lameter
2008-02-01 1:57 ` Christoph Lameter
2008-02-01 2:38 ` Robin Holt
2008-02-01 2:38 ` Robin Holt
2008-02-01 2:38 ` Robin Holt
2008-02-01 2:41 ` Christoph Lameter
2008-02-01 2:41 ` Christoph Lameter
2008-02-01 2:41 ` Christoph Lameter
2008-02-01 0:01 ` mmu_notifier: close hole in fork Andrea Arcangeli
2008-02-01 0:01 ` Andrea Arcangeli
2008-02-01 0:01 ` Andrea Arcangeli
2008-02-01 1:48 ` Christoph Lameter
2008-02-01 1:48 ` Christoph Lameter
2008-02-01 1:48 ` Christoph Lameter
2008-02-01 4:24 ` [patch 2/3] mmu_notifier: Callbacks to invalidate address ranges Robin Holt
2008-02-01 4:24 ` Robin Holt
2008-02-01 4:24 ` Robin Holt
2008-02-01 4:43 ` Christoph Lameter
2008-02-01 4:43 ` Christoph Lameter
2008-02-01 4:43 ` Christoph Lameter
2008-02-01 10:32 ` Robin Holt
2008-02-01 10:32 ` Robin Holt
2008-02-01 10:32 ` Robin Holt
2008-02-01 10:37 ` Robin Holt
2008-02-01 10:37 ` Robin Holt
2008-02-01 19:13 ` Christoph Lameter
2008-02-01 19:13 ` Christoph Lameter
2008-02-01 19:13 ` Christoph Lameter
2008-01-31 4:57 ` [patch 3/3] mmu_notifier: invalidate_page callbacks Christoph Lameter
2008-01-31 4:57 ` Christoph Lameter
2008-01-31 17:18 ` [PATCH] mmu notifiers #v5 Andrea Arcangeli
2008-01-31 17:18 ` Andrea Arcangeli
2008-01-31 17:18 ` Andrea Arcangeli
2008-01-31 20:18 ` Christoph Lameter
2008-01-31 20:18 ` Christoph Lameter
2008-01-31 20:18 ` Christoph Lameter
2008-01-31 23:09 ` Christoph Lameter
2008-01-31 23:09 ` Christoph Lameter
2008-01-31 23:41 ` Andrea Arcangeli
2008-01-31 23:41 ` Andrea Arcangeli
2008-01-31 23:41 ` Andrea Arcangeli
2008-02-01 1:44 ` Christoph Lameter
2008-02-01 1:44 ` Christoph Lameter
2008-02-01 1:44 ` Christoph Lameter
2008-02-01 12:09 ` Andrea Arcangeli
2008-02-01 12:09 ` Andrea Arcangeli
2008-02-01 12:09 ` Andrea Arcangeli
2008-02-01 19:23 ` Christoph Lameter
2008-02-01 19:23 ` Christoph Lameter
2008-02-01 19:23 ` Christoph Lameter
2008-02-03 2:17 ` Andrea Arcangeli
2008-02-03 2:17 ` Andrea Arcangeli
2008-02-03 2:17 ` Andrea Arcangeli
2008-02-03 3:14 ` Jack Steiner
2008-02-03 3:14 ` Jack Steiner
2008-02-03 3:14 ` Jack Steiner
2008-02-03 3:33 ` Andrea Arcangeli
2008-02-03 3:33 ` Andrea Arcangeli
2008-02-03 3:33 ` Andrea Arcangeli
2008-02-04 19:09 ` Christoph Lameter
2008-02-04 19:09 ` Christoph Lameter
2008-02-04 19:09 ` Christoph Lameter
2008-02-05 5:25 ` Andrea Arcangeli
2008-02-05 5:25 ` Andrea Arcangeli
2008-02-05 6:11 ` Christoph Lameter
2008-02-05 6:11 ` Christoph Lameter
2008-02-05 6:11 ` Christoph Lameter
2008-02-05 18:08 ` Andrea Arcangeli
2008-02-05 18:08 ` Andrea Arcangeli
2008-02-05 18:08 ` Andrea Arcangeli
2008-02-05 18:17 ` Christoph Lameter
2008-02-05 18:17 ` Christoph Lameter
2008-02-05 18:17 ` Christoph Lameter
2008-02-05 20:55 ` Andrea Arcangeli
2008-02-05 20:55 ` Andrea Arcangeli
2008-02-05 20:55 ` Andrea Arcangeli
2008-02-05 22:06 ` Christoph Lameter
2008-02-05 22:06 ` Christoph Lameter
2008-02-05 22:06 ` Christoph Lameter
2008-02-05 22:12 ` Robin Holt
2008-02-05 22:12 ` Robin Holt
2008-02-05 22:12 ` Robin Holt
2008-02-05 22:26 ` Andrea Arcangeli
2008-02-05 22:26 ` Andrea Arcangeli
2008-02-05 22:26 ` Andrea Arcangeli
2008-02-05 23:10 ` Christoph Lameter
2008-02-05 23:10 ` Christoph Lameter
2008-02-05 23:10 ` Christoph Lameter
2008-02-05 23:47 ` Andrea Arcangeli
2008-02-05 23:47 ` Andrea Arcangeli
2008-02-05 23:47 ` Andrea Arcangeli
2008-02-06 0:04 ` Christoph Lameter
2008-02-06 0:04 ` Christoph Lameter
2008-02-06 0:04 ` Christoph Lameter
2008-01-31 23:28 ` Andrea Arcangeli
2008-01-31 23:28 ` Andrea Arcangeli
2008-02-01 1:37 ` Christoph Lameter
2008-02-01 1:37 ` Christoph Lameter
2008-02-01 1:37 ` Christoph Lameter
2008-02-01 2:23 ` Robin Holt
2008-02-01 2:23 ` Robin Holt
2008-02-01 2:23 ` Robin Holt
2008-02-01 2:26 ` Christoph Lameter
2008-02-01 2:26 ` Christoph Lameter
2008-02-01 2:26 ` Christoph Lameter
2008-02-01 12:00 ` Andrea Arcangeli
2008-02-01 12:00 ` Andrea Arcangeli
2008-02-01 12:00 ` Andrea Arcangeli
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