Re: [PATCH RFC 0/4] x86/fixmap: Unify FIXADDR_TOP

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On Mon, May 15 2023 at 16:19, Hou Wenlong wrote:

> This patchset unifies FIXADDR_TOP as a variable for x86, allowing the
> fixmap area to be movable and relocated with the kernel image in the
> x86/PIE patchset [0]. This enables the kernel image to be relocated in
> the top 512G of the address space.

What for? What's the use case.

Please provide a proper argument why this is generally useful and
important.

Thanks,

        tglx
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