Re: [RFC 00/15] x86_64: Optimize percpu accesses

[H. Peter Anvin]

Eric W. Biederman wrote:
> > >
> > No, it's not irrelevant; we currently base the kernel at virtual address -2 GB
> > (KERNEL_IMAGE_START) + CONFIG_PHYSICAL_START, in order to have the proper
> > alignment for large pages.
>
> Ugh.  That is silly.  We need to restrict CONFIG_PHYSICAL_START to the aligned
> choices obviously.  But -2G is better aligned then anything else we can do virtually.

You may think it's silly, but it's actually an advantage in this case.

	-hpa
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