linux-kernel - Re: [PATCH 1/5] rcu,nohz: add state parameter to context_tracking_user

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Date:	Fri, 06 Feb 2015 13:20:21 -0500
From:	Rik van Riel <riel@...hat.com>
To:	Frederic Weisbecker <fweisbec@...il.com>
CC:	kvm@...r.kernel.org, borntraeger@...ibm.com,
	linux-kernel@...r.kernel.org, mtosatti@...hat.com,
	mingo@...nel.orgm, ak@...ux.intel.com, oleg@...hat.com,
	masami.hiramatsu.pt@...achi.com, paulmck@...ux.vnet.ibm.com,
	lcapitulino@...hat.com, pbonzini@...hat.com
Subject: Re: [PATCH 1/5] rcu,nohz: add state parameter to context_tracking_user_enter/exit

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On 02/06/2015 12:22 PM, Frederic Weisbecker wrote:
> On Thu, Feb 05, 2015 at 03:23:48PM -0500, riel@...hat.com wrote:
>> From: Rik van Riel <riel@...hat.com>
>> 
>> Add the expected ctx_state as a parameter to
>> context_tracking_user_enter and context_tracking_user_exit,
>> allowing the same functions to not just track kernel <> user
>> space switching, but also kernel <> guest transitions.
>> 
>> Signed-off-by: Rik van Riel <riel@...hat.com>
> 
> You should consider using guest_enter() and guest_exit() instead.
> These are context tracking APIs too but specifically for guest.

What do you mean instead?  KVM already uses those.

I just wanted to avoid duplicating the code...

- -- 
All rights reversed
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