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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <alpine.DEB.2.02.1402192048240.2568@chino.kir.corp.google.com>
Date:	Wed, 19 Feb 2014 20:51:55 -0800 (PST)
From:	David Rientjes <rientjes@...gle.com>
To:	Luiz Capitulino <lcapitulino@...hat.com>
cc:	Marcelo Tosatti <mtosatti@...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

On Wed, 19 Feb 2014, Luiz Capitulino wrote:

> > Yes, my concrete objection is that the command line interface is 
> > unnecessary if you can dynamically allocate and free 1GB pages at runtime 
> > unless memory will be so fragmented that it cannot be done when userspace 
> > is brought up.  That is not your use case, thus this support is not 
> 
> Yes it is. The early boot is the most reliable moment to allocate huge pages
> and we want to take advantage from that.
> 

Your use case is 8GB of hugepages on a 32GB machine.  It shouldn't be 
necessary to do that at boot.

Thanks.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/