From: "Roger Pau Monné" <roger.pau@citrix.com>
To: Matt Fleming <matt@codeblueprint.co.uk>
Cc: "Michael Chang" <MChang@suse.com>,
"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>,
"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>,
"Julien Grall" <julien.grall@arm.com>,
"Stefano Stabellini" <stefano.stabellini@eu.citrix.com>,
"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>,
"Linux Kernel Mailing List" <linux-kernel@vger.kernel.org>,
"Andy Lutomirski" <luto@amacapital.net>,
"Luis R. Rodriguez" <mcgrof@kernel.org>
Subject: Re: HVMLite / PVHv2 - using x86 EFI boot entry
Date: Wed, 13 Apr 2016 12:03:12 +0200 [thread overview]
Message-ID: <20160413100312.647eocdtbmak4btk__42749.5467629798$1460541964$gmane$org@mac> (raw)
In-Reply-To: <20160406150240.GO2701@codeblueprint.co.uk>
On Wed, Apr 06, 2016 at 04:02:40PM +0100, Matt Fleming wrote:
[...]
> One place that struck me as suitable for this "hypercall in an EFI
> service stub" approach is the trouble with doing ACPI reboot as
> documented here,
>
> http://lists.xen.org/archives/html/xen-devel/2016-02/msg01609.html
>
> Performing the reset hypercall from within HVMlite's custom EfiReset()
> service would avoid having to touch ACPICA at all, and would be
> indistinguishable from bare metal.
I don't get this, the "reset/shutdown" hypercall requires the following
steps from Dom0 (it's not as simple as calling a hypercall):
The way to perform a full system power off from Dom0 is different than
what's done in a DomU guest. In order to perform a power off from Dom0 the
native ACPI path should be followed, but the guest should not write the
`SLP_EN` bit to the Pm1Control register. Instead the
`XENPF_enter_acpi_sleep` hypercall should be used, filling the following
data in the `xen_platform_op` struct:
cmd = XENPF_enter_acpi_sleep
interface_version = XENPF_INTERFACE_VERSION
u.enter_acpi_sleep.pm1a_cnt_val = Pm1aControlValue
u.enter_acpi_sleep.pm1b_cnt_val = Pm1bControlValue
At which point it means that we are either going to duplicate ACPICA code
into the HVMlite's custom EfiReset() service, or we are going to call into
ACPICA, which is what we already do now.
Roger.
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next prev parent reply other threads:[~2016-04-13 10:04 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 [this message]
[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
[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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