From: "Roger Pau Monné" <roger.pau@citrix.com>
To: Matt Fleming <matt@codeblueprint.co.uk>
Cc: "George Dunlap" <george.dunlap@citrix.com>,
"Michael Chang" <MChang@suse.com>,
"Linux Kernel Mailing List" <linux-kernel@vger.kernel.org>,
"Julien Grall" <julien.grall@arm.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>,
"Charles Arndol" <carnold@suse.com>,
"Stefano Stabellini" <stefano.stabellini@eu.citrix.com>,
joeyli <jlee@suse.com>, "Borislav Petkov" <bp@alien8.de>,
"Boris Ostrovsky" <boris.ostrovsky@oracle.com>,
"Juergen Gross" <jgross@suse.com>,
"Andrew Cooper" <andrew.cooper3@citrix.com>,
"Jim Fehlig" <jfehlig@suse.com>,
"Andy Lutomirski" <luto@amacapital.net>,
"Luis R. Rodriguez" <mcgrof@kernel.org>,
"David Vrabel" <david.vrabel@citrix.com>
Subject: Re: [Xen-devel] HVMLite / PVHv2 - using x86 EFI boot entry
Date: Wed, 13 Apr 2016 12:03:12 +0200 [thread overview]
Message-ID: <20160413100312.647eocdtbmak4btk@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.
next prev parent reply other threads:[~2016-04-13 10:04 UTC|newest]
Thread overview: 127+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-06 2:40 HVMLite / PVHv2 - using x86 EFI boot entry Luis R. Rodriguez
2016-04-06 9:40 ` David Vrabel
2016-04-06 9:40 ` David Vrabel
2016-04-08 20:40 ` Luis R. Rodriguez
2016-04-08 20:40 ` Luis R. Rodriguez
2016-04-11 5:12 ` Juergen Gross
2016-04-11 5:12 ` Juergen Gross
2016-04-12 21:02 ` Andy Lutomirski
2016-04-13 9:02 ` Roger Pau Monné
2016-04-13 10:15 ` Matt Fleming
2016-04-13 10:15 ` Matt Fleming
2016-04-13 10:40 ` Matt Fleming
2016-04-13 10:40 ` Matt Fleming
2016-04-13 11:12 ` George Dunlap
2016-04-13 11:12 ` [Xen-devel] " George Dunlap
2016-04-13 11:59 ` Roger Pau Monné
2016-04-15 22:53 ` Matt Fleming
2016-04-15 22:53 ` Matt Fleming
2016-04-13 11:59 ` Roger Pau Monné
2016-04-13 9:02 ` Roger Pau Monné
2016-04-12 21:02 ` Andy Lutomirski
2016-04-13 18:29 ` Luis R. Rodriguez
2016-04-13 18:29 ` Luis R. Rodriguez
2016-04-13 18:56 ` Konrad Rzeszutek Wilk
2016-04-13 20:40 ` Luis R. Rodriguez
2016-04-13 20:40 ` [Xen-devel] " Luis R. Rodriguez
2016-04-13 21:08 ` Konrad Rzeszutek Wilk
2016-04-13 22:23 ` [Xen-devel] " Luis R. Rodriguez
2016-04-14 1:01 ` Konrad Rzeszutek Wilk
2016-04-14 18:40 ` Luis R. Rodriguez
2016-04-14 18:40 ` [Xen-devel] " Luis R. Rodriguez
2016-04-14 19:56 ` Konrad Rzeszutek Wilk
2016-04-14 19:56 ` Konrad Rzeszutek Wilk
2016-04-14 20:56 ` [Xen-devel] " Luis R. Rodriguez
2016-04-15 2:02 ` Konrad Rzeszutek Wilk
2016-04-15 2:02 ` [Xen-devel] " Konrad Rzeszutek Wilk
2016-04-15 17:08 ` Luis R. Rodriguez
2016-04-15 17:08 ` [Xen-devel] " Luis R. Rodriguez
2016-04-15 10:06 ` Julien Grall
2016-04-15 10:06 ` [Xen-devel] " Julien Grall
2016-04-15 14:55 ` Luis R. Rodriguez
2016-04-15 18:44 ` Stefano Stabellini
2016-04-15 18:44 ` [Xen-devel] " Stefano Stabellini
2016-04-15 14:55 ` Luis R. Rodriguez
2016-04-14 20:56 ` Luis R. Rodriguez
2016-04-14 1:01 ` Konrad Rzeszutek Wilk
2016-04-13 22:23 ` Luis R. Rodriguez
2016-04-06 11:07 ` [Xen-devel] " George Dunlap
2016-04-06 15:02 ` Matt Fleming
2016-04-06 16:05 ` Konrad Rzeszutek Wilk
2016-04-06 16:23 ` Konrad Rzeszutek Wilk
2016-04-08 21:53 ` [Xen-devel] " Luis R. Rodriguez
2016-04-08 21:53 ` Luis R. Rodriguez
2016-04-13 10:03 ` Roger Pau Monné
2016-04-13 10:03 ` Roger Pau Monné [this message]
2016-04-13 10:21 ` [Xen-devel] " Matt Fleming
2016-04-13 10:21 ` Matt Fleming
2016-04-06 15:02 ` Matt Fleming
2016-04-07 18:51 ` [Xen-devel] " Luis R. Rodriguez
2016-04-08 14:16 ` George Dunlap
2016-04-08 21:58 ` Luis R. Rodriguez
2016-04-12 22:12 ` Luis R. Rodriguez
2016-04-13 10:05 ` George Dunlap
2016-04-13 18:54 ` Luis R. Rodriguez
2016-04-14 9:42 ` George Dunlap
2016-04-14 19:59 ` Luis R. Rodriguez
2016-04-14 19:59 ` [Xen-devel] " Luis R. Rodriguez
2016-04-14 9:42 ` George Dunlap
2016-04-13 18:54 ` Luis R. Rodriguez
2016-04-13 10:05 ` George Dunlap
2016-04-13 10:25 ` Roger Pau Monné
2016-04-13 10:25 ` [Xen-devel] " Roger Pau Monné
2016-04-13 19:10 ` Luis R. Rodriguez
2016-04-13 19:10 ` Luis R. Rodriguez
2016-04-12 22:12 ` Luis R. Rodriguez
2016-04-13 9:54 ` [Xen-devel] " Roger Pau Monné
2016-04-13 18:50 ` Luis R. Rodriguez
2016-04-13 18:50 ` [Xen-devel] " Luis R. Rodriguez
2016-04-13 19:02 ` Konrad Rzeszutek Wilk
2016-04-13 19:14 ` [Xen-devel] " Luis R. Rodriguez
2016-04-13 19:22 ` Konrad Rzeszutek Wilk
2016-04-13 20:01 ` Luis R. Rodriguez
2016-04-13 20:01 ` [Xen-devel] " Luis R. Rodriguez
2016-04-13 20:11 ` Konrad Rzeszutek Wilk
2016-04-13 20:35 ` [Xen-devel] " Luis R. Rodriguez
2016-04-13 20:48 ` Konrad Rzeszutek Wilk
2016-04-13 20:35 ` Luis R. Rodriguez
2016-04-14 10:13 ` George Dunlap
2016-04-14 10:13 ` [Xen-devel] " George Dunlap
2016-04-13 19:14 ` Luis R. Rodriguez
2016-04-13 9:54 ` Roger Pau Monné
2016-04-08 21:58 ` Luis R. Rodriguez
2016-04-08 14:16 ` George Dunlap
2016-04-13 15:44 ` [Xen-devel] " George Dunlap
2016-04-13 19:52 ` Luis R. Rodriguez
2016-04-13 19:52 ` [Xen-devel] " Luis R. Rodriguez
2016-04-14 9:53 ` George Dunlap
2016-04-14 9:53 ` [Xen-devel] " George Dunlap
2016-04-14 19:44 ` Luis R. Rodriguez
2016-04-14 20:38 ` Konrad Rzeszutek Wilk
2016-04-14 21:12 ` Luis R. Rodriguez
2016-04-14 21:12 ` [Xen-devel] " Luis R. Rodriguez
2016-04-15 2:14 ` Konrad Rzeszutek Wilk
2016-04-15 2:14 ` Konrad Rzeszutek Wilk
2016-04-14 20:38 ` Konrad Rzeszutek Wilk
2016-04-15 5:50 ` [Xen-devel] " Juergen Gross
2016-04-15 15:24 ` Luis R. Rodriguez
2016-04-15 15:24 ` [Xen-devel] " Luis R. Rodriguez
2016-04-15 5:50 ` Juergen Gross
2016-04-15 9:59 ` George Dunlap
2016-04-15 9:59 ` [Xen-devel] " George Dunlap
2016-04-15 15:30 ` Luis R. Rodriguez
2016-04-15 15:30 ` [Xen-devel] " Luis R. Rodriguez
2016-04-15 16:03 ` George Dunlap
2016-04-15 16:03 ` [Xen-devel] " George Dunlap
2016-04-15 17:17 ` Luis R. Rodriguez
2016-04-15 17:17 ` [Xen-devel] " Luis R. Rodriguez
2016-04-14 19:44 ` Luis R. Rodriguez
2016-04-13 15:44 ` George Dunlap
2016-04-07 18:51 ` Luis R. Rodriguez
2016-04-06 11:07 ` George Dunlap
2016-04-06 11:11 ` Daniel Kiper
2016-04-07 19:12 ` Luis R. Rodriguez
2016-04-07 19:12 ` Luis R. Rodriguez
2016-04-09 17:02 ` Luis R. Rodriguez
2016-04-09 17:02 ` Luis R. Rodriguez
2016-04-06 11:11 ` Daniel Kiper
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