Re: [PATCH] x86: static_cpu_has_safe: discard dynamic check after init

[Borislav Petkov]

On Sat, Jan 16, 2016 at 02:58:21PM -0500, Brian Gerst wrote:
> It saves space.  The only thing left in main text is one jump
> instruction (5 bytes).

How do I measure this?

Because with my tailored config here, the only thing I'm seeing is a growth of
text by 730 bytes:

before:
   text    data     bss     dec     hex filename
10926552        3598944 16642048        31167544        1db9438 vmlinux

[    0.056552] Freeing SMP alternatives memory: 24K (ffffffff81dd7000 - ffffffff81ddd000)
[    2.883728] Freeing unused kernel memory: 2904K (ffffffff81b01000 - ffffffff81dd7000)


after:
   text    data     bss     dec     hex filename
10927282        3598944 16642048        31168274        1db9712 vmlinux

[    0.052559] Freeing SMP alternatives memory: 24K (ffffffff81dd7000 - ffffffff81ddd000)
[    3.225318] Freeing unused kernel memory: 2904K (ffffffff81b01000 - ffffffff81dd7000)

-- 
Regards/Gruss,
    Boris.

SUSE Linux GmbH, GF: Felix ImendÃrffer, Jane Smithard, Graham Norton, HRB 21284 (AG NÃrnberg)
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