From: Rik van Riel <riel@redhat.com>
To: Jerome Glisse <j.glisse@gmail.com>,
Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>,
linux-mm <linux-mm@kvack.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
linux-fsdevel <linux-fsdevel@vger.kernel.org>,
Mel Gorman <mgorman@suse.de>, "H. Peter Anvin" <hpa@zytor.com>,
Andrew Morton <akpm@linux-foundation.org>,
Linda Wang <lwang@redhat.com>, Kevin E Martin <kem@redhat.com>,
Jerome Glisse <jglisse@redhat.com>,
Andrea Arcangeli <aarcange@redhat.com>,
Johannes Weiner <jweiner@redhat.com>,
Larry Woodman <lwoodman@redhat.com>,
Dave Airlie <airlied@redhat.com>, Jeff Law <law@redhat.com>,
Brendan Conoboy <blc@redhat.com>,
Joe Donohue <jdonohue@redhat.com>,
Duncan Poole <dpoole@nvidia.com>,
Sherry Cheung <SCheung@nvidia.com>,
Subhash Gutti <sgutti@nvidia.com>,
John Hubbard <jhubbard@nvidia.com>, Mark Hairgrove <
Subject: Re: [RFC] Heterogeneous memory management (mirror process address space on a device mmu).
Date: Tue, 06 May 2014 11:42:58 -0400 [thread overview]
Message-ID: <53690302.5070600@redhat.com> (raw)
In-Reply-To: <20140506153315.GB6731@gmail.com>
On 05/06/2014 11:33 AM, Jerome Glisse wrote:
> So how can i solve the issue at hand. A device that has its own page
> table and can not mirror the cpu page table, nor can the device page
> table be updated atomicly from the cpu. Yes such device will exist
TLB invalidation on very large systems can already take
essentially forever.
Are we OK with extending that "forever" period for heterogeneous
memory management with crappy devices, or is this something we
could/should look into improving in the general case?
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next prev parent reply other threads:[~2014-05-06 15:42 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-02 13:51 [RFC] Heterogeneous memory management (mirror process address space on a device mmu) j.glisse
2014-05-02 13:52 ` [PATCH 01/11] mm: differentiate unmap for vmscan from other unmap j.glisse
2014-05-02 13:52 ` [PATCH 02/11] mmu_notifier: add action information to address invalidation j.glisse
2014-05-02 13:52 ` [PATCH 03/11] mmu_notifier: pass through vma to invalidate_range and invalidate_page j.glisse
2014-05-02 13:52 ` [PATCH 04/11] interval_tree: helper to find previous item of a node in rb interval tree j.glisse
2014-05-02 13:52 ` [PATCH 05/11] mm/memcg: support accounting null page and transfering null charge to new page j.glisse
2014-05-02 13:52 ` [PATCH 06/11] hmm: heterogeneous memory management j.glisse
2014-05-02 13:52 ` [PATCH 07/11] hmm: support moving anonymous page to remote memory j.glisse
2014-05-02 13:52 ` [PATCH 08/11] hmm: support for migrate file backed pages " j.glisse
2014-05-02 13:52 ` [PATCH 09/11] fs/ext4: add support for hmm migration to remote memory of pagecache j.glisse
2014-05-02 13:52 ` [PATCH 10/11] hmm/dummy: dummy driver to showcase the hmm api j.glisse
2014-05-02 13:52 ` [PATCH 11/11] hmm/dummy_driver: add support for fake remote memory using pages j.glisse
2014-05-06 10:29 ` [RFC] Heterogeneous memory management (mirror process address space on a device mmu) Peter Zijlstra
2014-05-06 14:57 ` Linus Torvalds
2014-05-06 15:00 ` Jerome Glisse
2014-05-06 15:18 ` Linus Torvalds
2014-05-06 15:33 ` Jerome Glisse
2014-05-06 15:42 ` Rik van Riel [this message]
2014-05-06 15:47 ` Linus Torvalds
2014-05-06 16:18 ` Jerome Glisse
2014-05-06 16:32 ` Linus Torvalds
2014-05-06 16:49 ` Jerome Glisse
2014-05-06 17:28 ` Jerome Glisse
2014-05-06 17:43 ` Linus Torvalds
2014-05-06 18:13 ` Jerome Glisse
2014-05-06 18:22 ` Linus Torvalds
2014-05-06 18:38 ` Jerome Glisse
2014-05-07 7:18 ` Benjamin Herrenschmidt
2014-05-07 7:14 ` Benjamin Herrenschmidt
2014-05-07 12:39 ` Jerome Glisse
2014-05-09 1:26 ` Jerome Glisse
2014-05-10 4:28 ` Benjamin Herrenschmidt
2014-05-11 0:48 ` Jerome Glisse
2014-05-06 16:30 ` Rik van Riel
2014-05-06 16:34 ` Linus Torvalds
2014-05-06 16:47 ` Rik van Riel
2014-05-06 16:54 ` Jerome Glisse
2014-05-06 18:02 ` H. Peter Anvin
2014-05-06 18:26 ` Jerome Glisse
2014-05-06 22:44 ` David Airlie
2014-05-07 2:33 ` Davidlohr Bueso
2014-05-07 13:00 ` Peter Zijlstra
2014-05-07 17:34 ` Davidlohr Bueso
2014-05-07 16:21 ` Linus Torvalds
2014-05-08 16:47 ` sagi grimberg
2014-05-08 17:56 ` Jerome Glisse
2014-05-09 1:42 ` Davidlohr Bueso
2014-05-09 1:45 ` Jerome Glisse
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