diff options
| author | Kees Cook <keescook@chromium.org> | 2013-10-10 17:18:15 -0700 |
|---|---|---|
| committer | H. Peter Anvin <hpa@linux.intel.com> | 2013-10-13 03:12:12 -0700 |
| commit | 5bfce5ef55cbe78ee2ee6e97f2e26a8a582008f3 (patch) | |
| tree | ead4a5281554b6f2e0a334cc7e1d83dccf35e15c /arch/x86/boot/compressed/misc.h | |
| parent | 8ab3820fd5b2896d66da7bb2a906bc382e63e7bc (diff) | |
x86, kaslr: Provide randomness functions
Adds potential sources of randomness: RDRAND, RDTSC, or the i8254.
This moves the pre-alternatives inline rdrand function into the header so
both pieces of code can use it. Availability of RDRAND is then controlled
by CONFIG_ARCH_RANDOM, if someone wants to disable it even for kASLR.
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: http://lkml.kernel.org/r/1381450698-28710-4-git-send-email-keescook@chromium.org
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'arch/x86/boot/compressed/misc.h')
| -rw-r--r-- | arch/x86/boot/compressed/misc.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/boot/compressed/misc.h b/arch/x86/boot/compressed/misc.h index 9077af7fd0b8..0782eb0b6e30 100644 --- a/arch/x86/boot/compressed/misc.h +++ b/arch/x86/boot/compressed/misc.h @@ -52,6 +52,8 @@ unsigned char *choose_kernel_location(unsigned char *input, unsigned long input_size, unsigned char *output, unsigned long output_size); +/* cpuflags.c */ +bool has_cpuflag(int flag); #else static inline unsigned char *choose_kernel_location(unsigned char *input, |