Re: [PATCH v3] x86, efi: Calling __pa() with an ioremap'd addressis invalid

From: H. Peter Anvin
Date: Mon Nov 07 2011 - 16:02:06 EST


On 11/07/2011 12:58 PM, Matthew Garrett wrote:
>
>> However, "EFI stub in the kernel" doesn't mean "can't use an external
>> bootloader."
>
> Agreed. It just means that we're still plausibly going to need some
> handshaking between them. Alternatively, as long as the bootloader
> passes us the memory map, we can just ignore any E820 map it gives us
> anyway.
>

I know we need to be able to pass the initramfs in memory; anything else
we need other than the normal EFI executable entry conditions?

-hpa
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