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Re: [PATCH 4.14 03/69] x86/power/64: Use struct desc_ptr for the IDT in struct saved_context

On Mon 2019-04-15 20:58:21, Greg Kroah-Hartman wrote:
> [ Upstream commit 090edbe23ff57940fca7f57d9165ce57a826bd7a ]
> x86_64's saved_context nonsensically used separate idt_limit and
> idt_base fields and then cast &idt_limit to struct desc_ptr *.
> This was correct (with -fno-strict-aliasing), but it's confusing,
> served no purpose, and required #ifdeffery. Simplify this by
> using struct desc_ptr directly.
> No change in functionality.

While this is nice cleanup, I don't think it fixes real bug. I don't
think it is suitable for stable.

(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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