linux-kernel - Re: Regression with commit f9cde5f in 2.6.30-gitX

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Message-ID: <20090624161306.GC7239@us.ibm.com>
Date:	Wed, 24 Jun 2009 09:13:06 -0700
From:	Gary Hade <garyhade@...ibm.com>
To:	Jaswinder Singh Rajput <jaswinder@...nel.org>
Cc:	Thomas Gleixner <tglx@...utronix.de>,
	Larry Finger <Larry.Finger@...inger.net>,
	Gary Hade <garyhade@...ibm.com>,
	Jesse Barnes <jbarnes@...tuousgeek.org>,
	LKML <linux-kernel@...r.kernel.org>, Ingo Molnar <mingo@...e.hu>,
	x86 maintainers <x86@...nel.org>, Len Brown <lenb@...nel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: Regression with commit f9cde5f in 2.6.30-gitX

On Wed, Jun 24, 2009 at 09:27:48PM +0530, Jaswinder Singh Rajput wrote:
> On Wed, 2009-06-24 at 17:19 +0200, Thomas Gleixner wrote:
> > Larry,
> > 
> > On Wed, 24 Jun 2009, Larry Finger wrote:
> > > For the record, the printout from the patch results in the following:
> > > 
> > > PCI: Failed to allocate 0xd0000-0xd3fff from PCI mem for PCI Bus 0000:00
> > > PCI: Failed to allocate 0xec000-0xeffff from PCI mem for PCI Bus
> > > 0000:00 due to _CRS returning more than 13 resource descriptors
> > > PCI: Failed to allocate 0xf0000-0xfffff from PCI mem for PCI Bus
> > > 0000:00 due to _CRS returning more than 13 resource descriptors
> > > PCI: Failed to allocate 0xc0000000-0xfebfffff from PCI mem for PCI Bus
> > > 0000:00 due to _CRS returning more than 13 resource descriptors
> > 
> > can you please the patch below instead of the other one ?
> > 
> > Thanks,
> > 
> > 	tglx
> > ---
> > diff --git a/arch/x86/pci/acpi.c b/arch/x86/pci/acpi.c
> > index 16c3fda..39a0cce 100644
> > --- a/arch/x86/pci/acpi.c
> > +++ b/arch/x86/pci/acpi.c
> > @@ -99,7 +99,6 @@ setup_resource(struct acpi_resource *acpi_res, void *data)
> >  			"%d resource descriptors\n", (unsigned long) res->start,
> >  			(unsigned long) res->end, root->name, info->name,
> >  			max_root_bus_resources);
> > -		info->res_num++;
> >  		return AE_OK;
> >  	}
> >  
> 
> This fails and system does not boot, I already tested this patch 8 hours
> ago.

I think the resource array needs to be larger.  Can you try
the below patch?

Gary

--- linux-2.6.30-rc8/include/linux/pci.h.ORIG	2009-06-24 09:03:41.000000000 -0700
+++ linux-2.6.30-rc8/include/linux/pci.h	2009-06-24 09:06:50.000000000 -0700
@@ -319,7 +319,7 @@ static inline void pci_add_saved_cap(str
 }
 
 #ifndef PCI_BUS_NUM_RESOURCES
-#define PCI_BUS_NUM_RESOURCES	16
+#define PCI_BUS_NUM_RESOURCES	20
 #endif
 
 #define PCI_REGION_FLAG_MASK	0x0fU	/* These bits of resource flags tell us the PCI region flags */
--
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