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SubjectRe: [PATCH] i386: handle an initrd in highmem (version 2)
On Mon, Jan 07, 2008 at 09:02:53PM -0800, H. Peter Anvin wrote:
> The boot protocol has until now required that the initrd be located in
> lowmem, which makes the lowmem/highmem boundary visible to the boot
> loader. This was exported to the bootloader via a compile-time
> field. Unfortunately, the vmalloc= command-line option breaks this
> part of the protocol; instead of adding yet another hack that affects
> the bootloader, have the kernel relocate the initrd down below the
> lowmem boundary inside the kernel itself.
> Note that this does not rely on HIGHMEM being enabled in the kernel.
> Signed-off-by: H. Peter Anvin <>
> ---
> Fix crash on NUMA reported by Dhaval Giani (reported as being a kexec issue.)

Yep, it does that. Just tested that on top of the x86 git tree (the mm
queue). It boots.

Tested-by: Dhaval Giani <>


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