* Jeremy Fitzhardinge <[email protected]> wrote:
> [...] The basic inner loop is:
>
> push %segreg
> mov %selectorreg, %segreg
> add $1,%segreg:offset # use the segment register
> pop %segreg
well, the most important thing i believe you didnt test: the effect of
mixing two descriptors on the _same_ selector: one %gs selector value
loaded and used by glibc, and another %gs selector value loaded and used
by the kernel, intermixed. It's the mixing that causes the descriptor
cache reload. (unless i missed some detail about your testcase)
Ingo
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
