From: Julien Grall <julien.grall@linaro.org>
To: Stefano Stabellini <stefano.stabellini@eu.citrix.com>,
xen-devel@lists.xensource.com
Cc: julien.grall@citrix.com, Ian.Campbell@citrix.com
Subject: Re: [PATCH v10 10/10] xen/arm: make accesses to desc->status flags atomic
Date: Tue, 05 Aug 2014 13:35:52 +0100 [thread overview]
Message-ID: <53E0CFA8.2010104@linaro.org> (raw)
In-Reply-To: <1407237989-27654-10-git-send-email-stefano.stabellini@eu.citrix.com>
Hi Stefano,
On 08/05/2014 12:26 PM, Stefano Stabellini wrote:
> This way we don't need to take the desc->lock in order to access
> desc->status in many of the gic and vgic functions.
>
> Using *_bit manipulation functions on desc->status is safe on arm64:
> status is an unsigned int but is the first field of a struct that
> contains pointers, therefore the alignement of the struct is at least 8
> bytes.
>
> Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
> Acked-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Julien Grall <julien.grall@linaro.org>
Regards,
--
Julien Grall
prev parent reply other threads:[~2014-08-05 12:35 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-08-05 11:25 [PATCH v10 00/10] gic and vgic fixes and improvements Stefano Stabellini
2014-08-05 11:26 ` [PATCH v10 01/10] xen/arm: observe itargets setting in vgic_enable_irqs and vgic_disable_irqs Stefano Stabellini
2014-08-05 11:26 ` [PATCH v10 02/10] xen/arm: move setting GIC_IRQ_GUEST_QUEUED earlier Stefano Stabellini
2014-08-05 11:26 ` [PATCH v10 03/10] xen/arm: inflight irqs during migration Stefano Stabellini
2014-08-05 12:28 ` Julien Grall
2014-08-05 14:35 ` Stefano Stabellini
2014-08-05 11:26 ` [PATCH v10 04/10] xen/arm: support irq delivery to vcpu > 0 Stefano Stabellini
2014-08-05 11:26 ` [PATCH v10 05/10] xen/arm: physical irq follow virtual irq Stefano Stabellini
2014-08-05 11:57 ` Jan Beulich
2014-08-05 12:01 ` Jan Beulich
2014-08-05 11:26 ` [PATCH v10 06/10] xen: introduce sched_move_irqs Stefano Stabellini
2014-08-05 11:26 ` [PATCH v10 07/10] xen: remove workaround to inject evtchn_irq on irq enable Stefano Stabellini
2014-08-05 12:00 ` Jan Beulich
2014-08-05 12:34 ` Julien Grall
2014-08-05 11:26 ` [PATCH v10 08/10] xen/arm: take the rank lock before accessing ipriority Stefano Stabellini
2014-08-05 11:26 ` [PATCH v10 09/10] xen: introduce bit access macros for the IRQ line status flags Stefano Stabellini
2014-08-05 11:26 ` [PATCH v10 10/10] xen/arm: make accesses to desc->status flags atomic Stefano Stabellini
2014-08-05 12:35 ` Julien Grall [this message]
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