linux-kernel - Re: [PATCH 4/4] hugetlb: add hugepages

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Message-ID: <20140221223616.GG22728@two.firstfloor.org>
Date:	Fri, 21 Feb 2014 23:36:16 +0100
From:	Andi Kleen <andi@...stfloor.org>
To:	David Rientjes <rientjes@...gle.com>
Cc:	Marcelo Tosatti <mtosatti@...hat.com>,
	Luiz Capitulino <lcapitulino@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Mel Gorman <mgorman@...e.de>,
	Andrea Arcangeli <aarcange@...hat.com>,
	Andi Kleen <andi@...stfloor.org>,
	Rik van Riel <riel@...hat.com>, davidlohr@...com,
	isimatu.yasuaki@...fujitsu.com, yinghai@...nel.org,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [PATCH 4/4] hugetlb: add hugepages_node= command-line option

> > 2) it improves the kernel command line interface from incomplete
> > (lacking the ability to specify node<->page correlation), to 
> > a complete interface.
> > 
> 
> If GB hugepages can be allocated dynamically, I really think we should be 
> able to remove hugepagesz= entirely for x86 after a few years of 
> supporting it for backwards compatibility, even though Linus has insisted 

That doesn't make any sense. Why break a perfectly fine interface?

-Andi

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