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x86, kaslr: boot-time selectable with hibernation

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Changes kASLR from being compile-time selectable (blocked by
CONFIG_HIBERNATION), to being boot-time selectable (with hibernation
available by default) via the "kaslr" kernel command line.

Signed-off-by: Kees Cook <keescook@chromium.org>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Kees Cook 2014-06-13 13:30:36 -07:00 • committed by Rafael J. Wysocki
parent a6e15a3904
commit 24f2e0273f
4 changed files with 22 additions and 7 deletions
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6
kernel/power/hibernate.c
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@ -1153,6 +1153,11 @@ static int __init nohibernate_setup(char *str)
return 1;
}
static int __init kaslr_nohibernate_setup(char *str)
{
return nohibernate_setup(str);
}
__setup("noresume", noresume_setup);
__setup("resume_offset=", resume_offset_setup);
__setup("resume=", resume_setup);
@ -1160,3 +1165,4 @@ __setup("hibernate=", hibernate_setup);
__setup("resumewait", resumewait_setup);
__setup("resumedelay=", resumedelay_setup);
__setup("nohibernate", nohibernate_setup);
__setup("kaslr", kaslr_nohibernate_setup);