• Thomas Petazzoni's avatar
    x86: configuration options to compile out x86 CPU support code · 8d02c211
    Thomas Petazzoni authored
    This patch adds some configuration options that allow to compile out
    CPU vendor-specific code in x86 kernels (in arch/x86/kernel/cpu). The
    new configuration options are only visible when CONFIG_EMBEDDED is
    selected, as they are mostly interesting for space savings reasons.
    
    An example of size saving, on x86 with only Intel CPU support:
    
       text	   data	    bss	    dec	    hex	filename
    1125479	 118760	 212992	1457231	 163c4f	vmlinux.old
    1121355	 116536	 212992	1450883	 162383	vmlinux
      -4124   -2224       0   -6348   -18CC +/-
    
    However, I'm not exactly sure that the Kconfig wording is correct with
    regard to !64BIT / 64BIT.
    
    [ mingo@elte.hu: convert macro to inline ]
    Signed-off-by: default avatarThomas Petazzoni <thomas.petazzoni@free-electrons.com>
    Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
    8d02c211
Kconfig.cpu 14.4 KB