linux-kernel - Re: [PATCH v5 03/12] Add async PF initialization to PV guest.

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Date:	Mon, 23 Aug 2010 11:08:06 -0500 (CDT)
From:	Christoph Lameter <cl@...ux.com>
To:	Gleb Natapov <gleb@...hat.com>
cc:	Avi Kivity <avi@...hat.com>, kvm@...r.kernel.org,
	linux-mm@...ck.org, linux-kernel@...r.kernel.org, mingo@...e.hu,
	a.p.zijlstra@...llo.nl, tglx@...utronix.de, hpa@...or.com,
	riel@...hat.com, mtosatti@...hat.com
Subject: Re: [PATCH v5 03/12] Add async PF initialization to PV guest.

On Mon, 23 Aug 2010, Gleb Natapov wrote:

> > The guest will have to align this on a 64 byte boundary, should this
> > be marked __aligned(64) here?
> >
> I do __aligned(64) when I declare variable of that type:
>
> static DEFINE_PER_CPU(struct kvm_vcpu_pv_apf_data, apf_reason) __aligned(64);

64 byte boundary: You mean cacheline aligned? We have a special define for
that.

DEFINE_PER_CPU_SHARED_ALIGNED

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