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DateThu, 13 Jul 2006 23:22:31 -0700
From"H. Peter Anvin" <>
SubjectRe: [PATCH 1/1] Fix boot on efi 32 bit Machines [try #4]
Eric W. Biederman wrote:
> 
> While we are thinking about this I have a stupid question.
> Currently if a memory mapped region does not fall in a standard PCI
> bar we insist it must be E820 reserved.  However if we E820 reserve
> the memory of a standard pci bar it becomes unusable.
> 
> Is this really the behavior that we intend?
> 
> It gets confusing that E820 reserved gets double duty as memory
> the BIOS is using and MMIO space that is mapped by a non-standard bar.
> 

Well, they are both really the same thing... "memory space the OS has no 
idea how it works; here there be dragons."

	-hpa

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