From mboxrd@z Thu Jan 1 00:00:00 1970 From: Konrad Rzeszutek Wilk Subject: Re: Re: [RFC PATCH] acpi/xen: Evaluate the _PDC properly (for 2.6.32, and 2.6.39) Date: Wed, 15 Jun 2011 11:00:38 -0400 Message-ID: <20110615150038.GD11705@dumpdata.com> References: <20110615134615.GA7529@dumpdata.com> <4DF8DABF020000780004765C@nat28.tlf.novell.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <4DF8DABF020000780004765C@nat28.tlf.novell.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Jan Beulich Cc: Jeremy Fitzhardinge , xen-devel@lists.xensource.com, bderzhavets@yahoo.com, ke.yu@intel.com, carsten@schiers.de, tom.goetz@virtualcomputer.com List-Id: xen-devel@lists.xenproject.org On Wed, Jun 15, 2011 at 03:15:59PM +0100, Jan Beulich wrote: > >>> On 15.06.11 at 15:46, Konrad Rzeszutek Wilk wrote: > > I was trying to bring up an prototype box and it while it booted fine under > > Linux, if I tried to do it under Dom0 with a modified Linux kernel it > > crashed. > > By modified I mean it had the "xen/acpi: add xen acpi processor driver" > > patch in it. > > > > I traced it down to a one line fix which fixed the issue. > > It might make sense to back-port this to the 2.6.32 tree, and it _might_ fix > > The parameter type change happened in 2.6.33. Aha! That would explain why it was there - thank you for your sharp eye. BTW, are there any good materials on explaining _PSS, _PDC, _P.. and C-states and how to read the ACPI DSDT/SSDT to figure out what it has? One of my AMD boxes on baremetal finds the _PSS tables but when I boot under Xen it tells me it can't find it - and I am not even sure what they look like in the ACPI tables.