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From: "Tian, Kevin" <kevin.tian@intel.com>
To: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
	Andrew Cooper <andrew.cooper3@citrix.com>
Cc: "xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>
Subject: RE: [PATCH 1 of 3] apic: record local apic state on boot
Date: Thu, 19 May 2011 08:56:24 +0800	[thread overview]
Message-ID: <625BA99ED14B2D499DC4E29D8138F1505C9BBF8DAF@shsmsx502.ccr.corp.intel.com> (raw)
In-Reply-To: <20110518204309.GA7647@dumpdata.com>

> From: Konrad Rzeszutek Wilk
> Sent: Thursday, May 19, 2011 4:43 AM
> 
> On Wed, May 18, 2011 at 09:27:56PM +0100, Andrew Cooper wrote:
> >
> >
> > On 18/05/11 19:49, Konrad Rzeszutek Wilk wrote:
> > >On Wed, May 18, 2011 at 07:08:14PM +0100, Andrew Cooper wrote:
> > >>Xen does not store the boot local apic state which leads to problems
> > >>when shutting down for a kexec jump.  This patch records the boot
> > >>state so we can return to the boot state when kexec'ing.
> > >>
> > >>This is per CPU because all 3 bioses on the boxes I have tested dont
> > >>enabled all local apics on boot.  As a result, we have to return to
> > >>the bios state so the ACPI tables match up with the hardware state
> > >>for the booting kernel.
> > >Which ACPI table requires this?
> > Cant remember offhand but linux (2.6.32) was doing finger pointing at
> > the multi-processor tables
> 
> MP tables? Those don't get used when ACPI is used..

He may mean ACPI MADT table...

Thanks
Kevin

  reply	other threads:[~2011-05-19  0:56 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-05-18 18:08 [PATCH 0 of 3] Fix kexec path in xen (take 2) Andrew Cooper
2011-05-18 18:08 ` [PATCH 1 of 3] apic: record local apic state on boot Andrew Cooper
2011-05-18 18:49   ` Konrad Rzeszutek Wilk
2011-05-18 20:27     ` Andrew Cooper
2011-05-18 20:43       ` Konrad Rzeszutek Wilk
2011-05-19  0:56         ` Tian, Kevin [this message]
2011-05-19  8:34         ` Ian Campbell
2011-05-19 16:21           ` Konrad Rzeszutek Wilk
2011-05-19  0:54       ` Tian, Kevin
2011-05-18 23:40   ` Keir Fraser
2011-05-19 11:14     ` Andrew Cooper
2011-05-19 14:26       ` Konrad Rzeszutek Wilk
2011-05-19 14:43         ` Andrew Cooper
2011-05-18 18:08 ` [PATCH 2 of 3] apic: remove 'enabled_via_apicbase' variable Andrew Cooper
2011-05-18 18:53   ` Konrad Rzeszutek Wilk
2011-05-18 20:35     ` Andrew Cooper
2011-05-18 20:45       ` Konrad Rzeszutek Wilk
2011-05-19  3:31       ` Tian, Kevin
2011-05-18 18:08 ` [PATCH 3 of 3] kexec: disable iommu jumping into the kdump kernel Andrew Cooper
2011-05-18 18:49   ` Konrad Rzeszutek Wilk
2011-05-18 20:48     ` Andrew Cooper
2011-05-18 20:57       ` Konrad Rzeszutek Wilk
2011-05-18 21:24         ` Andrew Cooper
2011-05-19 14:32           ` Konrad Rzeszutek Wilk
2011-05-20  0:33             ` Kay, Allen M
2011-05-20 21:55             ` Kay, Allen M
2011-05-18 18:39 ` [PATCH 0 of 3] Fix kexec path in xen (take 2) Konrad Rzeszutek Wilk

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