Booting Kernel from a Higher Physical Memory Base on x86/x86_64

[Swapnil Pimpale]

Hi All,

I want to run a kernel in a higher physical offset. i.e. If I have 1
GB of memory, I want to give only upper 512 MB to the kernel and keep
lower 512 MB free (not mapped in virtual memory). Is this possible for
x86 or x86_64 architecture?

I have found that there is a PHYS_OFFSET macro in arm kernel which
makes it possible to use higher physical base address. Is there
anything similar to this for x86/x86_64?

Thanks in advance,
Swapnil Pimpale
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/