Re: [PATCH] x86: Reserve legacy VGA MMIO area for x86_64 as wellas x86_32

[Yinghai]

On 04/09/2010 06:43 PM, Andy Isaacson wrote:
> On Fri, Apr 09, 2010 at 06:10:49PM -0700, Yinghai wrote:
>> in addition to -v2 patch
>>
>> please apply this patch too
>>
>> also please boot with "debug" in boot command line.
>>
>> Thanks
>>
>> Yinghai
>>
>> [PATCH] x86,acpi: use request_resource instead of instead of insert_resource
>>
>> So make pci root resouce from _CRS honor the one We reserve in e820 below 1M
>>
>> Signed-off-by: Yinghai Lu <yinghai@xxxxxxxxxx>
>>
>> ---
>>  arch/x86/pci/acpi.c |    2 +-
>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> Index: linux-2.6/arch/x86/pci/acpi.c
>> ===================================================================
>> --- linux-2.6.orig/arch/x86/pci/acpi.c
>> +++ linux-2.6/arch/x86/pci/acpi.c
>> @@ -168,7 +168,7 @@ setup_resource(struct acpi_resource *acp
>>  		return AE_OK;
>>  	}
>>  
>> -	conflict = insert_resource_conflict(root, res);
>> +	conflict = request_resource_conflict(root, res);
>>  	if (conflict) {
>>  		dev_err(&info->bridge->dev,
>>  			"address space collision: host bridge window %pR "
> 
> That works.  dmesg.gz attached (I'm pretty sure I'm skating close to
> vger's size limit without gz).  "debug" didn't seem to make much
> difference?

[    0.636805] ACPI: PCI Root Bridge [PCI0] (0000:00)
[    0.654025] pci_root PNP0A03:00: address space collision: host bridge window [io  0x0000-0x0cf7] conflicts with dma1 [io  0x0000-0x001f]
[    0.654370] pci_root PNP0A03:00: host bridge window [io  0x0d00-0xffff]
[    0.654586] pci_root PNP0A03:00: address space collision: host bridge window [mem 0x000a0000-0x000bffff] conflicts with reserved [mem 0x000a0000-0x000fffff]
[    0.654933] pci_root PNP0A03:00: address space collision: host bridge window [mem 0x000c0000-0x000effff] conflicts with reserved [mem 0x000a0000-0x000fffff]
[    0.655002] pci_root PNP0A03:00: address space collision: host bridge window [mem 0x000f0000-0x000fffff] conflicts with reserved [mem 0x000a0000-0x000fffff]
[    0.655367] pci_root PNP0A03:00: host bridge window [mem 0xf0000000-0xfebfffff]
[    0.655706] pci_root PNP0A03:00: host bridge window [mem 0xbff00000-0xdfffffff]
[    0.656003] pci_root PNP0A03:00: host bridge window [mem 0xff980800-0xff980bff]
[    0.656360] pci_root PNP0A03:00: host bridge window [mem 0xff97c000-0xff97ffff]
[    0.657002] pci_root PNP0A03:00: host bridge window [mem 0xfed20000-0xfed9ffff]

still not optimal.

YH
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