Re: [Xen-devel] Design doc of adding ACPI support for arm64 on Xen - version 5

["Jan Beulich" <jbeulich@xxxxxxxx>]

>>> Shannon Zhao <zhaoshenglong@xxxxxxxxxx> 09/02/15 8:03 AM >>>
>There are some descriptions in Documentation/arm64/booting.txt of Linux:
>
>"The Image must be placed text_offset bytes from a 2MB aligned base
>address near the start of usable system RAM and called there. Memory
>below that base address is currently unusable by Linux, and therefore it
>is strongly recommended that this location is the start of system RAM.
>At least image_size bytes from the start of the image must be free for
>use by the kernel."
>
>From this, it says "Memory below that base address is currently unusable
>by Linux". So if we put these tables below Dom0 RAM address and even
>describe these regions as RAM, the Linux could not use them.

May I remind you that a design should not take specific guest OS
implementation details (which even for that one OS may change over time)
as the basis for decisions?

Jan


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