Re: [PATCH 02/11] PCI: Try to allocate mem64 above 4G at first

[Yinghai Lu]

On Fri, May 25, 2012 at 10:53 AM, Yinghai Lu <yinghai@xxxxxxxxxx> wrote:
>> I don't really like the dependency on PCIBIOS_MAX_MEM_32 + 1ULL
>> overflowing to zero -- that means the reader has to know what the
>> value of PCIBIOS_MAX_MEM_32 is, and things would break in non-obvious
>> ways if we changed it.
>>

please check if attached one is more clear.

make max and bottom is only related to _MEM and not default one.

-       if (!(res->flags & IORESOURCE_MEM_64))
-               max = PCIBIOS_MAX_MEM_32;
+       if (res->flags & IORESOURCE_MEM) {
+               if (!(res->flags & IORESOURCE_MEM_64))
+                       max = PCIBIOS_MAX_MEM_32;
+               else if (PCIBIOS_MAX_MEM_32 != -1)
+                       bottom = (resource_size_t)(1ULL<<32);
+       }

will still not affect to other arches.


Thanks

Yinghai

Attachment: allocate_high_at_first.patch
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