linux-kernel - Re: [kvm-devel] include files for kvmclock

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Date:	Wed, 07 Nov 2007 22:27:46 +0900
From:	Akio Takebe <takebe_akio@...fujitsu.com>
To:	Glauber de Oliveira Costa <gcosta@...hat.com>
Cc:	linux-kernel@...r.kernel.org, jeremy@...p.org, hollisb@...ibm.com,
	kvm-devel@...ts.sourceforge.net, avi@...ranet.com,
	Akio Takebe <takebe_akio@...fujitsu.com>
Subject: Re: [kvm-devel] include files for kvmclock

Hi, 

>> Why does kvm_hv_clock need page_align?
>Each vcpu will register a page on its own. In the guest side, it will be
>an array of pages. So, we make it page sized.
>
>> And also the kvm_hv_clock is alloced with kvm_vcpu,
>There's no requirements on the host part at all. So it doesn't really
>matter. In the next version, I may make it even a simple pointer.
>
>> so the align is not enough, isn't it?
>> I thik __atribute__((__aligne__(PAGE_SIZE)))) is better than it.
>It deals with the start of the structure, but not with its size. See the
>guest part: Where it matters, I do use it.
Oh, I confused the guest/host part, but I could understand it.
Thank you for your explanation.

Best Regards,

Akio Takebe

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