2.6.17-rc6 does not boot on HP dc7600u - MCFG area is not E820-reserved

[Barry Scott <barry.scott@onelan.co.uk>]

I'm trying to boot 2.6.17-rc6 with Mismatched section patches applied.

On my HP dc7600U the last messages printed are:

PCI: BUIS Bug: MCFG area is not E820-reserved
PCI: Not using MMCONFIG

Googling I found a message about a IBM laptop reporting this message
but that it did go on to boot. THere was a suggestion that the test 
should be
removed. I commented out the code and I can boot further.

Here is the code I patched.

--- arch/i386/pci/mmconfig.c~   2006-06-15 13:04:58.000000000 +0100
+++ arch/i386/pci/mmconfig.c    2006-06-15 13:04:58.000000000 +0100
@@ -194,17 +194,19 @@
       if ((pci_mmcfg_config_num == 0) ||
           (pci_mmcfg_config == NULL) ||
           (pci_mmcfg_config[0].base_address == 0))
               return;

+/* qqq
       if (!e820_all_mapped(pci_mmcfg_config[0].base_address,
                       pci_mmcfg_config[0].base_address + 
MMCONFIG_APER_SIZE,
                       E820_RESERVED)) {
               printk(KERN_ERR "PCI: BIOS Bug: MCFG area is not 
E820-reserved\n");
               printk(KERN_ERR "PCI: Not using MMCONFIG.\n");
               return;
       }
+qqq */

       printk(KERN_INFO "PCI: Using MMCONFIG\n");
       raw_pci_ops = &pci_mmcfg;
       pci_probe = (pci_probe & ~PCI_PROBE_MASK) | PCI_PROBE_MMCONF;

Barry

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