From: sboyd@codeaurora.org (Stephen Boyd)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v3 1/2] ARM: arch_timers: enable the use of the virtual timer
Date: Thu, 30 Aug 2012 16:28:08 -0700 [thread overview]
Message-ID: <503FF708.10603@codeaurora.org> (raw)
In-Reply-To: <1345819976-6339-2-git-send-email-marc.zyngier@arm.com>
On 8/24/2012 7:52 AM, Marc Zyngier wrote:
> At the moment, the arch_timer driver only uses the physical timer,
> which can cause problem if PL2 hasn't enabled PL1 access in CNTHCTL,
> which is likely in a virtualized environment. Instead, the virtual
> timer is always available.
>
> This patch enables the use of the virtual timer, unless no
> interrupt is provided in the DT for it, in which case it falls
> back to the physical timer.
Is this a good candidate for static keys? It looks like we make the
decision fairly early and then we're done and have a bunch of if
statements. Maybe its premature optimization though...
--
Sent by an employee of the Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum.
next prev parent reply other threads:[~2012-08-30 23:28 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-24 14:52 [PATCH v3 0/2] arch_timers patches to enable KVM support Marc Zyngier
2012-08-24 14:52 ` [PATCH v3 1/2] ARM: arch_timers: enable the use of the virtual timer Marc Zyngier
2012-08-30 18:28 ` Cyril Chemparathy
2012-09-04 14:46 ` Marc Zyngier
2012-08-30 23:28 ` Stephen Boyd [this message]
2012-08-24 14:52 ` [PATCH v3 2/2] ARM: arch_timers: register a time/cycle counter Marc Zyngier
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