linux-kernel - Re: [patch 05/11] syslets: core code

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Message-ID: <20070214094629.GA6801@elte.hu>
Date:	Wed, 14 Feb 2007 10:46:29 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Evgeniy Polyakov <johnpol@....mipt.ru>
Cc:	Andi Kleen <andi@...stfloor.org>, linux-kernel@...r.kernel.org,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Arjan van de Ven <arjan@...radead.org>,
	Christoph Hellwig <hch@...radead.org>,
	Andrew Morton <akpm@....com.au>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Ulrich Drepper <drepper@...hat.com>,
	Zach Brown <zach.brown@...cle.com>,
	"David S. Miller" <davem@...emloft.net>,
	Benjamin LaHaise <bcrl@...ck.org>,
	Suparna Bhattacharya <suparna@...ibm.com>,
	Davide Libenzi <davidel@...ilserver.org>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [patch 05/11] syslets: core code


* Evgeniy Polyakov <johnpol@....mipt.ru> wrote:

> This will end up badly - I used the same approach in the early kevent 
> days and was proven to have swapable memory for the ring. I think it 
> would be much better to have userspace allocated ring and use 
> copy_to_user() there.

it is a userspace allocated ring - but pinned down by the kernel.

	Ingo
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