From: "Nakajima, Jun" <jun.nakajima@intel.com>
To: Jeremy Fitzhardinge <jeremy@goop.org>,
"Eric W. Biederman" <ebiederm@xmission.com>
Cc: Xen-devel <xen-devel@lists.xensource.com>,
the arch/x86 maintainers <x86@kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Ingo Molnar <mingo@redhat.com>,
Keir Fraser <keir.fraser@eu.citrix.com>,
"H. Peter Anvin" <hpa@zytor.com>,
Thomas Gleixner <tglx@linutronix.de>, Len Brown <lenb@kernel.org>
Subject: RE: [Xen-devel] Re: [PATCH RFC] x86/acpi: don't ignore I/O APICs just because there's no local APIC
Date: Fri, 19 Jun 2009 16:44:24 -0700 [thread overview]
Message-ID: <0B53E02A2965CE4F9ADB38B34501A3A188656507@orsmsx505.amr.corp.intel.com> (raw)
In-Reply-To: <4A3BEDD6.6070303@goop.org>
Jeremy Fitzhardinge wrote on Fri, 19 Jun 2009 at 12:58:14:
>>
>> Which if dom0 is to be redundant/restartable seems to make the
>> argument for AML living in Xen.
>>
>> Xen has everything except the AML interpreter.
>>
>
> I assume that putting AML into Xen has been considered, but I don't
> anything about those deliberations. Keir? Jun?
>
Yes, it was one of the options years ago. We did not do that because Linux and Solaris (as dom0) already had the AML interpreter and it's overkill and redundant to have such a large component in the Xen hypervisor. Since the hypervisor does most of the power management (i.e. P, C, S-state, etc.) getting the info from dom0 today, we might want to reconsider the option.
Jun
___
Intel Open Source Technology Center
WARNING: multiple messages have this Message-ID (diff)
From: "Nakajima, Jun" <jun.nakajima@intel.com>
To: Jeremy Fitzhardinge <jeremy@goop.org>,
"Eric W. Biederman" <ebiederm@xmission.com>
Cc: Xen-devel <xen-devel@lists.xensource.com>,
the arch/x86 maintainers <x86@kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Ingo Molnar <mingo@redhat.com>,
Keir Fraser <keir.fraser@eu.citrix.com>,
"H. Peter Anvin" <hpa@zytor.com>,
Thomas Gleixner <tglx@linutronix.de>, Len Brown <lenb@kernel.org>
Subject: RE: Re: [PATCH RFC] x86/acpi: don't ignore I/O APICs just because there's no local APIC
Date: Fri, 19 Jun 2009 16:44:24 -0700 [thread overview]
Message-ID: <0B53E02A2965CE4F9ADB38B34501A3A188656507@orsmsx505.amr.corp.intel.com> (raw)
In-Reply-To: <4A3BEDD6.6070303@goop.org>
Jeremy Fitzhardinge wrote on Fri, 19 Jun 2009 at 12:58:14:
>>
>> Which if dom0 is to be redundant/restartable seems to make the
>> argument for AML living in Xen.
>>
>> Xen has everything except the AML interpreter.
>>
>
> I assume that putting AML into Xen has been considered, but I don't
> anything about those deliberations. Keir? Jun?
>
Yes, it was one of the options years ago. We did not do that because Linux and Solaris (as dom0) already had the AML interpreter and it's overkill and redundant to have such a large component in the Xen hypervisor. Since the hypervisor does most of the power management (i.e. P, C, S-state, etc.) getting the info from dom0 today, we might want to reconsider the option.
Jun
___
Intel Open Source Technology Center
next prev parent reply other threads:[~2009-06-19 23:44 UTC|newest]
Thread overview: 79+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-12 18:22 [PATCH RFC] x86/acpi: don't ignore I/O APICs just because there's no local APIC Jeremy Fitzhardinge
2009-06-12 18:22 ` Jeremy Fitzhardinge
2009-06-12 18:28 ` Alan Cox
2009-06-12 18:28 ` Alan Cox
2009-06-12 18:33 ` Jeremy Fitzhardinge
2009-06-12 18:33 ` Jeremy Fitzhardinge
2009-06-12 20:11 ` Cyrill Gorcunov
2009-06-15 2:01 ` Jeremy Fitzhardinge
2009-06-12 20:35 ` Eric W. Biederman
2009-06-12 20:35 ` Eric W. Biederman
2009-06-15 2:06 ` Jeremy Fitzhardinge
2009-06-15 10:47 ` Eric W. Biederman
2009-06-15 10:47 ` Eric W. Biederman
2009-06-15 20:49 ` Jeremy Fitzhardinge
2009-06-15 20:49 ` Jeremy Fitzhardinge
2009-06-15 21:58 ` Eric W. Biederman
2009-06-15 21:58 ` Eric W. Biederman
2009-06-16 19:38 ` Jeremy Fitzhardinge
2009-06-16 19:38 ` Jeremy Fitzhardinge
2009-06-17 5:10 ` Eric W. Biederman
2009-06-17 5:10 ` Eric W. Biederman
2009-06-17 12:02 ` Eric W. Biederman
2009-06-17 12:02 ` Eric W. Biederman
2009-06-17 17:32 ` Jeremy Fitzhardinge
2009-06-17 17:32 ` Jeremy Fitzhardinge
2009-06-18 2:58 ` Eric W. Biederman
2009-06-18 2:58 ` Eric W. Biederman
2009-06-18 19:34 ` Jeremy Fitzhardinge
2009-06-18 19:34 ` Jeremy Fitzhardinge
2009-06-18 20:28 ` Eric W. Biederman
2009-06-18 21:09 ` Jeremy Fitzhardinge
2009-06-18 21:09 ` Jeremy Fitzhardinge
2009-06-19 1:38 ` Eric W. Biederman
2009-06-19 1:38 ` Eric W. Biederman
2009-06-19 3:10 ` [Xen-devel] " Jiang, Yunhong
2009-06-19 3:10 ` Jiang, Yunhong
2009-06-18 12:26 ` Eric W. Biederman
2009-06-15 10:51 ` Eric W. Biederman
2009-06-15 10:51 ` Eric W. Biederman
2009-06-18 16:08 ` Len Brown
2009-06-18 19:14 ` Jeremy Fitzhardinge
2009-06-18 19:14 ` Jeremy Fitzhardinge
2009-06-18 19:27 ` Eric W. Biederman
2009-06-18 19:48 ` Jeremy Fitzhardinge
2009-06-18 19:48 ` Jeremy Fitzhardinge
2009-06-18 20:39 ` Eric W. Biederman
2009-06-18 22:33 ` Jeremy Fitzhardinge
2009-06-18 22:33 ` Jeremy Fitzhardinge
2009-06-19 2:42 ` Eric W. Biederman
2009-06-19 2:42 ` Eric W. Biederman
2009-06-19 19:58 ` Jeremy Fitzhardinge
2009-06-19 19:58 ` Jeremy Fitzhardinge
2009-06-19 23:44 ` Nakajima, Jun [this message]
2009-06-19 23:44 ` Nakajima, Jun
2009-06-20 7:39 ` [Xen-devel] " Keir Fraser
2009-06-20 7:39 ` Keir Fraser
2009-06-20 8:21 ` [Xen-devel] " Eric W. Biederman
2009-06-20 8:21 ` Eric W. Biederman
2009-06-20 8:57 ` [Xen-devel] " Tian, Kevin
2009-06-20 8:57 ` Tian, Kevin
2009-06-20 10:22 ` [Xen-devel] " Keir Fraser
2009-06-20 10:22 ` Keir Fraser
2009-06-20 8:18 ` [Xen-devel] " Eric W. Biederman
2009-06-20 8:18 ` Eric W. Biederman
2009-06-19 5:32 ` Yinghai Lu
2009-06-19 5:32 ` Yinghai Lu
2009-06-19 5:50 ` Eric W. Biederman
2009-06-19 5:50 ` Eric W. Biederman
2009-06-19 7:52 ` [Xen-devel] Re: [PATCH RFC] x86/acpi: don't ignore I/O APICs justbecause " Jan Beulich
2009-06-19 7:52 ` Jan Beulich
2009-06-19 8:16 ` [Xen-devel] " Eric W. Biederman
2009-06-19 8:16 ` Eric W. Biederman
2009-06-20 3:58 ` [Xen-devel] " Yinghai Lu
2009-06-20 3:58 ` Yinghai Lu
2009-06-20 5:40 ` [Xen-devel] " Eric W. Biederman
2009-06-20 5:40 ` Eric W. Biederman
2009-06-20 5:58 ` [Xen-devel] " Yinghai Lu
2009-06-20 5:58 ` Yinghai Lu
2009-06-18 22:51 ` [PATCH RFC] x86/acpi: don't ignore I/O APICs just because " Maciej W. Rozycki
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