linux-kernel - Re: [Xen-devel] HVMLite / PVHv2

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Message-ID: <20160415152417.GW1990@wotan.suse.de>
Date:	Fri, 15 Apr 2016 17:24:17 +0200
From:	"Luis R. Rodriguez" <mcgrof@...nel.org>
To:	Juergen Gross <jgross@...e.com>
Cc:	"Luis R. Rodriguez" <mcgrof@...nel.org>,
	George Dunlap <george.dunlap@...rix.com>,
	Matt Fleming <matt@...eblueprint.co.uk>, jeffm@...e.com,
	Michael Chang <MChang@...e.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Jim Fehlig <jfehlig@...e.com>, Jan Beulich <JBeulich@...e.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	Daniel Kiper <daniel.kiper@...cle.com>,
	the arch/x86 maintainers <x86@...nel.org>,
	Takashi Iwai <tiwai@...e.de>,
	Vojtěch Pavlík <vojtech@...e.cz>,
	Gary Lin <GLin@...e.com>,
	xen-devel <xen-devel@...ts.xenproject.org>,
	Jeffrey Cheung <JCheung@...e.com>,
	Stefano Stabellini <stefano.stabellini@...citrix.com>,
	joeyli <jlee@...e.com>, Borislav Petkov <bp@...en8.de>,
	Boris Ostrovsky <boris.ostrovsky@...cle.com>,
	Charles Arndol <carnold@...e.com>,
	Andrew Cooper <andrew.cooper3@...rix.com>,
	Julien Grall <julien.grall@....com>,
	Andy Lutomirski <luto@...capital.net>,
	David Vrabel <david.vrabel@...rix.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Roger Pau Monné <roger.pau@...rix.com>
Subject: Re: [Xen-devel] HVMLite / PVHv2 - using x86 EFI boot entry

On Fri, Apr 15, 2016 at 07:50:25AM +0200, Juergen Gross wrote:
> On 14/04/16 21:44, Luis R. Rodriguez wrote:
> > No, I meant to ask, would it be possible to make booting HVMLite using EFI
> > be optional ? That way if you already support EFI that can be used on
> > your entires with some small modifications.
> 
> So you suggest to add two HVMlite modes regarding boot interface
> instead of one?

Not suggest, I'm evaluating what options we have available. That's very
different from suggesting. That's the point to this whole topic, pure and
simple evaluation of options.

> Given how long the EFI standard is available now and how buggy many
> vendor's implementations are I don't expect all computers sold in 5
> years will have a usable EFI. This will be true especially for
> consumer devices where no EFI is available today.

Thanks this really helps.

  Luis