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From: "Luis R. Rodriguez" <mcgrof@kernel.org>
To: "Roger Pau Monné" <roger.pau@citrix.com>
Cc: "Matt Fleming" <matt@codeblueprint.co.uk>,
	jeffm@suse.com, "Michael Chang" <MChang@suse.com>,
	"Linux Kernel Mailing List" <linux-kernel@vger.kernel.org>,
	"Jim Fehlig" <jfehlig@suse.com>,
	"Jan Beulich" <JBeulich@suse.com>,
	"H. Peter Anvin" <hpa@zytor.com>,
	"Daniel Kiper" <daniel.kiper@oracle.com>,
	"the arch/x86 maintainers" <x86@kernel.org>,
	"Takashi Iwai" <tiwai@suse.de>,
	"Vojtěch Pavlík" <vojtech@suse.cz>, "Gary Lin" <GLin@suse.com>,
	xen-devel <xen-devel@lists.xenproject.org>,
	"Jeffrey Cheung" <JCheung@suse.com>,
	"Juergen Gross" <jgross@suse.com>,
	"Stefano Stabellini" <stefano.stabellini@eu.citrix.com>,
	"Julien Grall" <julien.grall@linaro.org>,
	"George Dunlap" <george.dunlap@citrix.com>,
	joeyli <jlee@suse.com>, "Borislav Petkov" <bp@alien8.de>,
	"Boris Ostrovsky" <boris.ostrovsky@oracle.com>,
	"Charles Arndol" <carnold@suse.com>,
	"Andrew Cooper" <andrew.cooper3@citrix.com>
Subject: Re: HVMLite / PVHv2 - using x86 EFI boot entry
Date: Wed, 13 Apr 2016 20:50:10 +0200	[thread overview]
Message-ID: <20160413185010.GX1990__22783.0594675199$1460573500$gmane$org@wotan.suse.de> (raw)
In-Reply-To: <20160413095428.5mcbrimvc6vxffcw@mac>

On Wed, Apr 13, 2016 at 11:54:29AM +0200, Roger Pau Monné wrote:
> On Fri, Apr 08, 2016 at 11:58:54PM +0200, Luis R. Rodriguez wrote:
> > OK thanks for the clarification -- still no custom entries for Xen!
> > We should strive for that, at the very least.
> > 
> > You do have a point about the legacy stuff. There are two options there:
> > 
> >   * Fold legacy support under HVMLite -- which seems to be what we
> >     currently want to do (we should evaluate the implications and
> >     requirements here for that); or
> 
> I'm not following here. What does it mean to fold legacy support under 
> HVMlite? HVMlite doesn't have any legacy hardware, and that's the issue when 
> it comes to using native Linux entry points. Linux might expect some legacy 
> PC hardware to be always present, which is not true for HVMlite.
> 
> Could you please clarify this point?

It seems there is a confusion on terms used. By folding legacy support under
HVMLite I meant folding legacy PV path (classic PV with PV interfaces) under
HVMlite.

I got the impression that if we wanted to remove the old PV path we had to see
if we can address old classic PV x86 guests through HVMlite, otherwise we'd
have to live with the old PV path for the long term.

> >   * Leave legacy stuff on the old PV path; this may be something to
> >     bring to the table if we had in place a proactive solution to
> >     avoid further fallout from the architecture of the huge differences
> >     on the entries. The work I'm doing should help with that. (We should
> >     also evaluate the implications and requirements here for that as
> >     well).
> 
> Classic PV guests don't have legacy hardware at all, they just have PV 
> interfaces, so I'm even less sure of what this means.

Using the terms you use by "Leave legacy stuff on the old PV path" I meant 
not having to address classic PV guest support through HVMLite.

  Luis

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  parent reply	other threads:[~2016-04-13 18:50 UTC|newest]

Thread overview: 68+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20160406024027.GX1990@wotan.suse.de>
2016-04-06  9:40 ` HVMLite / PVHv2 - using x86 EFI boot entry David Vrabel
2016-04-06 11:07 ` George Dunlap
2016-04-06 11:11 ` Daniel Kiper
     [not found] ` <CAFLBxZbRjB6QWH5GbG6osCXat9NQVUAyDYrAMrdALbCofpX3Dg@mail.gmail.com>
2016-04-06 15:02   ` Matt Fleming
2016-04-07 18:51   ` Luis R. Rodriguez
     [not found]   ` <20160406150240.GO2701@codeblueprint.co.uk>
2016-04-06 16:05     ` Konrad Rzeszutek Wilk
2016-04-06 16:23       ` Konrad Rzeszutek Wilk
2016-04-08 21:53         ` Luis R. Rodriguez
2016-04-13 10:03     ` Roger Pau Monné
     [not found]     ` <20160413100312.647eocdtbmak4btk@mac>
2016-04-13 10:21       ` Matt Fleming
     [not found]   ` <20160407185148.GL1990@wotan.suse.de>
2016-04-08 14:16     ` George Dunlap
     [not found]     ` <5707BD2E.20204@citrix.com>
2016-04-08 21:58       ` Luis R. Rodriguez
     [not found]       ` <20160408215854.GU1990@wotan.suse.de>
2016-04-12 22:12         ` Luis R. Rodriguez
2016-04-13  9:54         ` Roger Pau Monné
     [not found]         ` <20160412221225.GN1990@wotan.suse.de>
2016-04-13 10:05           ` George Dunlap
2016-04-13 10:25           ` Roger Pau Monné
     [not found]           ` <CAFLBxZbiGppNad=Z6-fLgx89O0yAFrSyARTCwv=vHBR3zJ=NsA@mail.gmail.com>
2016-04-13 18:54             ` Luis R. Rodriguez
     [not found]             ` <20160413185451.GY1990@wotan.suse.de>
2016-04-14  9:42               ` George Dunlap
     [not found]               ` <570F65F7.5050108@citrix.com>
2016-04-14 19:59                 ` Luis R. Rodriguez
     [not found]           ` <20160413102156.b4qwhwbqvnnpmxgw@mac>
2016-04-13 19:10             ` Luis R. Rodriguez
     [not found]         ` <20160413095428.5mcbrimvc6vxffcw@mac>
2016-04-13 18:50           ` Luis R. Rodriguez [this message]
     [not found]           ` <20160413185010.GX1990@wotan.suse.de>
2016-04-13 19:02             ` Konrad Rzeszutek Wilk
2016-04-13 19:14               ` Luis R. Rodriguez
     [not found]               ` <20160413191408.GA1990@wotan.suse.de>
2016-04-13 19:22                 ` Konrad Rzeszutek Wilk
2016-04-13 20:01                   ` Luis R. Rodriguez
     [not found]                   ` <20160413200118.GC1990@wotan.suse.de>
2016-04-13 20:11                     ` Konrad Rzeszutek Wilk
2016-04-13 20:35                       ` Luis R. Rodriguez
     [not found]                       ` <CAB=NE6VdTB1Bc=c0oCd_tTHpwwkQcxhnOFdcLfck2jX=JjuOAQ@mail.gmail.com>
2016-04-13 20:48                         ` Konrad Rzeszutek Wilk
2016-04-14 10:13                 ` George Dunlap
2016-04-13 15:44     ` George Dunlap
     [not found]     ` <CAFLBxZbJ4QyJQ1-ZuXg_Q-9YNXnWzDyPNp4SX=d9g0DS8mJKaw@mail.gmail.com>
2016-04-13 19:52       ` Luis R. Rodriguez
     [not found]       ` <20160413195257.GB1990@wotan.suse.de>
2016-04-14  9:53         ` George Dunlap
     [not found]         ` <570F68AB.2040400@citrix.com>
2016-04-14 19:44           ` Luis R. Rodriguez
     [not found]           ` <20160414194408.GP1990@wotan.suse.de>
2016-04-14 20:38             ` Konrad Rzeszutek Wilk
     [not found]             ` <20160414203847.GB21657@localhost.localdomain>
2016-04-14 21:12               ` Luis R. Rodriguez
     [not found]               ` <20160414211201.GS1990@wotan.suse.de>
2016-04-15  2:14                 ` Konrad Rzeszutek Wilk
2016-04-15  5:50             ` Juergen Gross
2016-04-15  9:59             ` George Dunlap
     [not found]             ` <57108121.1070307@suse.com>
2016-04-15 15:24               ` Luis R. Rodriguez
     [not found]             ` <5710BB74.2060409@citrix.com>
2016-04-15 15:30               ` Luis R. Rodriguez
     [not found]               ` <20160415153028.GX1990@wotan.suse.de>
2016-04-15 16:03                 ` George Dunlap
     [not found]                 ` <571110BB.2000408@citrix.com>
2016-04-15 17:17                   ` Luis R. Rodriguez
     [not found] ` <5704D978.1050101@citrix.com>
2016-04-08 20:40   ` Luis R. Rodriguez
     [not found]   ` <20160408204032.GR1990@wotan.suse.de>
2016-04-11  5:12     ` Juergen Gross
     [not found]     ` <570B3228.90400@suse.com>
2016-04-12 21:02       ` Andy Lutomirski
     [not found]       ` <CALCETrXvGR3XKJf5Ab_ZPc-iuNuzR8AzLpRBciemKz4r0vSrGA@mail.gmail.com>
2016-04-13  9:02         ` Roger Pau Monné
     [not found]         ` <20160413090202.bg2vfdl3iol7eedv@mac>
2016-04-13 10:15           ` Matt Fleming
     [not found]           ` <20160413101515.GJ2829@codeblueprint.co.uk>
2016-04-13 10:40             ` Matt Fleming
2016-04-13 11:12             ` George Dunlap
2016-04-13 11:59             ` Roger Pau Monné
     [not found]             ` <20160413115846.hyt4lg24rfkenbxu@mac>
2016-04-15 22:53               ` Matt Fleming
2016-04-13 18:29       ` Luis R. Rodriguez
     [not found]       ` <20160413182951.GW1990@wotan.suse.de>
2016-04-13 18:56         ` Konrad Rzeszutek Wilk
2016-04-13 20:40           ` Luis R. Rodriguez
     [not found]           ` <20160413204055.GD1990@wotan.suse.de>
2016-04-13 21:08             ` Konrad Rzeszutek Wilk
2016-04-13 22:23               ` Luis R. Rodriguez
     [not found]               ` <20160413222317.GH1990@wotan.suse.de>
2016-04-14  1:01                 ` Konrad Rzeszutek Wilk
     [not found]                 ` <20160414010131.GA21510@localhost.localdomain>
2016-04-14 18:40                   ` Luis R. Rodriguez
     [not found]                   ` <20160414184048.GM1990@wotan.suse.de>
2016-04-14 19:56                     ` Konrad Rzeszutek Wilk
2016-04-14 20:56                       ` Luis R. Rodriguez
     [not found]                       ` <20160414205619.GR1990@wotan.suse.de>
2016-04-15  2:02                         ` Konrad Rzeszutek Wilk
2016-04-15 10:06                         ` Julien Grall
     [not found]                         ` <5710BD0B.2070306@arm.com>
2016-04-15 14:55                           ` Luis R. Rodriguez
     [not found]                           ` <CAB=NE6UDuLOnW8xfTcgCGSbJ1aS4TkkokcGdeJGHMBps0T9=Sg@mail.gmail.com>
2016-04-15 18:44                             ` Stefano Stabellini
     [not found]                         ` <20160415020246.GA6956@localhost.localdomain>
2016-04-15 17:08                           ` Luis R. Rodriguez
     [not found] ` <20160406111130.GG3489@olila.local.net-space.pl>
2016-04-07 19:12   ` Luis R. Rodriguez
2016-04-09 17:02   ` Luis R. Rodriguez
2016-04-06  2:40 Luis R. Rodriguez

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