Re: 2.2.18Pre Lan Performance Rocks!

Ingo Molnar
2000-10-30T09:41:09Z

On Mon, 30 Oct 2000, Jeff V. Merkey wrote:

> ds: and es: are both used in copy-to-user and copy-from-user and they
> get reloaded.

And they all share the same segment descriptor. Whats your point? ES is
the default target segment for string operations. DS is the default data
segment. Have you ever profiled how many cycles it takes to do a "mov
__KERNEL_DS, %es" in entry.S, before making your (ridiculous) claim? I
have.

Ingo