linux-kernel - Re: [PATCH v8 4/6] arm64: introduce CONFIG_PARAVIRT, PARAVIRT_TIME_ACCOUNTING and pv_time

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Message-ID: <52CDA34C.2030605@codeaurora.org>
Date:	Wed, 08 Jan 2014 14:13:16 -0500
From:	Christopher Covington <cov@...eaurora.org>
To:	Stefano Stabellini <stefano.stabellini@...citrix.com>
CC:	xen-devel@...ts.xensource.com, linux@....linux.org.uk,
	Ian.Campbell@...rix.com, arnd@...db.de, marc.zyngier@....com,
	Catalin.Marinas@....com, konrad.wilk@...cle.com,
	will.deacon@....com, linux-kernel@...r.kernel.org, nico@...aro.org,
	olof@...om.net, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v8 4/6] arm64: introduce CONFIG_PARAVIRT, PARAVIRT_TIME_ACCOUNTING
 and pv_time_ops

Hi Stefano,

On 01/08/2014 01:49 PM, Stefano Stabellini wrote:
> Introduce CONFIG_PARAVIRT and PARAVIRT_TIME_ACCOUNTING on ARM64.
> Necessary duplication of paravirt.h and paravirt.c with ARM.
> 
> The only paravirt interface supported is pv_time_ops.steal_clock, so no
> runtime pvops patching needed.
> 
> This allows us to make use of steal_account_process_tick for stolen
> ticks accounting.
> 
> Signed-off-by: Stefano Stabellini <stefano.stabellini@...citrix.com>
> CC: will.deacon@....com
> CC: nico@...aro.org
> CC: marc.zyngier@....com
> CC: cov@...eaurora.org
> CC: arnd@...db.de
> CC: olof@...om.net
> CC: Catalin.Marinas@....com

Looks good to me.

Acked-by Christopher Covington <cov@...eaurora.org>

While I don't think it should necessarily gate these changes, I wonder if at
some point the config options could be consolidated across the various
architectures using them.

Regards,
Christopher

-- 
Employee of Qualcomm Innovation Center, Inc.
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
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