• Dave Hansen's avatar
    x86/mm/pkeys: Add Kconfig option · 35e97790
    Dave Hansen authored
    I don't have a strong opinion on whether we need a Kconfig prompt
    or not.  Protection Keys has relatively little code associated
    with it, and it is not a heavyweight feature to keep enabled.
    However, I can imagine that folks would still appreciate being
    able to disable it.
    
    Note that, with disabled-features.h, the checks in the code
    for protection keys are always the same:
    
    	cpu_has(c, X86_FEATURE_PKU)
    
    With the config option disabled, this essentially turns into an
    
    We will hide the prompt for now.
    Signed-off-by: default avatarDave Hansen <dave.hansen@linux.intel.com>
    Reviewed-by: default avatarThomas Gleixner <tglx@linutronix.de>
    Cc: Andrew Morton <akpm@linux-foundation.org>
    Cc: Andy Lutomirski <luto@amacapital.net>
    Cc: Borislav Petkov <bp@alien8.de>
    Cc: Brian Gerst <brgerst@gmail.com>
    Cc: Dave Hansen <dave@sr71.net>
    Cc: Denys Vlasenko <dvlasenk@redhat.com>
    Cc: H. Peter Anvin <hpa@zytor.com>
    Cc: Linus Torvalds <torvalds@linux-foundation.org>
    Cc: Peter Zijlstra <peterz@infradead.org>
    Cc: Rik van Riel <riel@redhat.com>
    Cc: linux-mm@kvack.org
    Link: http://lkml.kernel.org/r/20160212210200.DB7055E8@viggo.jf.intel.comSigned-off-by: default avatarIngo Molnar <mingo@kernel.org>
    35e97790
Kconfig 87.9 KB