From: Tim Deegan <tim@xen.org>
To: Ian Campbell <ian.campbell@citrix.com>
Cc: julien.grall@citrix.com, stefano.stabellini@eu.citrix.com,
xen-devel@lists.xen.org
Subject: Re: [PATCH 09/10] xen: arm: weaken SMP barriers to inner shareable.
Date: Thu, 4 Jul 2013 12:35:37 +0100 [thread overview]
Message-ID: <20130704113537.GK40611@ocelot.phlegethon.org> (raw)
In-Reply-To: <1372435856-14040-9-git-send-email-ian.campbell@citrix.com>
At 17:10 +0100 on 28 Jun (1372439455), Ian Campbell wrote:
> Since all processors are in the inner-shareable domain and we map everything
> that way this is sufficient.
>
> The non-SMP barriers remain full system. Although in principal they could
s/principal/principle/.
> become outer shareable barriers for some hardware this would require us to
> know which class a given device is. Given the small number of device drivers
> in Xen itself its probably not worth worrying over, although maybe someone
> will benchmark at some point.
>
> Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Tim Deegan <tim@xen.org>
next prev parent reply other threads:[~2013-07-04 11:35 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-28 16:10 [PATCH 00/10] xen: arm: map normal memory as inner shareable, reduce scope of various barriers Ian Campbell
2013-06-28 16:10 ` [PATCH 01/10] xen: arm: map memory as inner shareable Ian Campbell
2013-07-01 15:39 ` Stefano Stabellini
2013-07-01 15:42 ` Ian Campbell
2013-07-02 14:09 ` Leif Lindholm
2013-07-02 14:26 ` Ian Campbell
2013-07-04 10:58 ` Tim Deegan
2013-07-04 11:03 ` Ian Campbell
2013-06-28 16:10 ` [PATCH 02/10] xen: arm: Only upgrade guest barriers to " Ian Campbell
2013-07-01 15:24 ` Stefano Stabellini
2013-07-04 10:58 ` Tim Deegan
2013-06-28 16:10 ` [PATCH 03/10] xen: arm: reduce instruction cache and tlb flushes to inner-shareable Ian Campbell
2013-07-01 15:25 ` Stefano Stabellini
2013-07-04 11:07 ` Tim Deegan
2013-07-04 11:19 ` Tim Deegan
2013-07-04 11:21 ` Tim Deegan
2013-06-28 16:10 ` [PATCH 04/10] xen: arm: consolidate barrier definitions Ian Campbell
2013-07-01 15:25 ` Stefano Stabellini
2013-07-04 11:07 ` Tim Deegan
2013-06-28 16:10 ` [PATCH 05/10] xen: use SMP barrier in common code dealing with shared memory protocols Ian Campbell
2013-06-28 16:15 ` Ian Campbell
2013-06-28 16:20 ` Keir Fraser
2013-07-04 11:26 ` Tim Deegan
2013-06-28 16:10 ` [PATCH 06/10] xen: arm: Use SMP barriers when that is all which is required Ian Campbell
2013-07-01 15:19 ` Stefano Stabellini
2013-07-01 15:24 ` Ian Campbell
2013-07-04 11:30 ` Tim Deegan
2013-06-28 16:10 ` [PATCH 07/10] xen: arm: Use dmb for smp barriers Ian Campbell
2013-07-01 15:20 ` Stefano Stabellini
2013-07-04 11:31 ` Tim Deegan
2013-06-28 16:10 ` [PATCH 08/10] xen: arm: add scope to dsb and dmb macros Ian Campbell
2013-07-01 15:21 ` Stefano Stabellini
2013-07-01 15:22 ` Stefano Stabellini
2013-07-04 11:44 ` (no subject) Tim Deegan
2013-06-28 16:10 ` [PATCH 09/10] xen: arm: weaken SMP barriers to inner shareable Ian Campbell
2013-07-01 15:21 ` Stefano Stabellini
2013-07-01 15:22 ` Stefano Stabellini
2013-07-04 11:35 ` Tim Deegan [this message]
2013-06-28 16:10 ` [PATCH 10/10] xen: arm: use more specific barriers for read and write barriers Ian Campbell
2013-07-01 15:22 ` Stefano Stabellini
2013-07-04 11:42 ` Tim Deegan
2013-07-04 11:46 ` Ian Campbell
2013-06-28 16:11 ` [PATCH 00/10] xen: arm: map normal memory as inner shareable, reduce scope of various barriers Ian Campbell
2013-07-04 11:32 (no subject) Tim Deegan
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