linux-kernel - Re: [PATCH 0/3] Early use of boot service memory

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Message-ID: <52866C0D.3050006@zytor.com>
Date:	Fri, 15 Nov 2013 10:46:37 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Vivek Goyal <vgoyal@...hat.com>
CC:	Yinghai Lu <yinghai@...nel.org>, Ingo Molnar <mingo@...nel.org>,
	jerry.hoemann@...com, Pekka Enberg <penberg@...nel.org>,
	Rob Landley <rob@...dley.net>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	x86 maintainers <x86@...nel.org>,
	Matt Fleming <matt.fleming@...el.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"list@...ederm.org:DOCUMENTATION" <linux-doc@...r.kernel.org>,
	"list@...ederm.org:MEMORY MANAGEMENT" <linux-mm@...ck.org>,
	linux-efi@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 0/3] Early use of boot service memory

On 11/15/2013 10:30 AM, Vivek Goyal wrote:
> 
> I agree taking assistance of hypervisor should be useful.
> 
> One reason we use kdump for VM too because it makes life simple. There
> is no difference in how we configure, start and manage crash dumps
> in baremetal or inside VM. And in practice have not heard of lot of
> failures of kdump in VM environment.
> 
> So while reliability remains a theoritical concern, in practice it
> has not been a real concern and that's one reason I think we have
> not seen a major push for alternative method in VM environment.
> 

Another reason, again, is that it doesn't sit on all that memory.

	-hpa

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