Re: why change_page_attr on x86 uses __flush_tlb_all

[Andi Kleen]

Nagendra Singh Tomar <nagendra_tomar@xxxxxxxxxxx> writes:

> 	I would expect __flush_tlb_one (for each page) as a better choice.
> It'll be nice if someone can hoghlight on  why __flush_tlb_all is used.
> The kernel version I am referring from is 2.4.18-14

This works around a bug in some early Athlons with flushing global
large pages. Also it makes the code slightly simpler and change_page_attr
is not really performance critical.

-Andi

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