linux-kernel - Re: [RFC v2 0/2] Early use of boot service memory

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Message-ID: <20131122023406.GG31921@redhat.com>
Date:	Thu, 21 Nov 2013 21:34:06 -0500
From:	Vivek Goyal <vgoyal@...hat.com>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	Yinghai Lu <yinghai@...nel.org>, jerry.hoemann@...com,
	Matthew Garrett <mjg59@...f.ucam.org>,
	Rob Landley <rob@...dley.net>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	the arch/x86 maintainers <x86@...nel.org>,
	Matt Fleming <matt.fleming@...el.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Borislav Petkov <bp@...e.de>,
	"linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	linux-efi@...r.kernel.org, Pekka Enberg <penberg@...nel.org>,
	Ingo Molnar <mingo.kernel.org@...il.com>
Subject: Re: [RFC v2 0/2] Early use of boot service memory

On Thu, Nov 21, 2013 at 05:31:54PM -0800, H. Peter Anvin wrote:
> On 11/21/2013 05:29 PM, Yinghai Lu wrote:
> > On Thu, Nov 21, 2013 at 5:25 PM,  <jerry.hoemann@...com> wrote:
> >> On Thu, Nov 21, 2013 at 05:12:57PM -0800, H. Peter Anvin wrote:
> >>
> >> Large systems w/ lots of IO require large crash kernel allocations for
> >> the kernel to boot.  Then you have to worry about the OOM killer.....
> > 
> > so go with crashkernel=1024M,high.
> > 
> 
> Yes, there is no bloody excuse to hog that much low memory.

Curious, why is low memory precious on x86_64? Who is going to use it?

Thanks
Vivek
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