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add support for clang Control Flow Integrity (CFI)

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This change adds the CONFIG_CFI_CLANG option, CFI error handling,
and a faster look-up table for cross module CFI checks.

Bug: 67506682
Change-Id: Ic009f0a629b552a0eb16e6d89808c7029e91447d
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
This commit is contained in:
Sami Tolvanen 2017-05-11 15:03:36 -07:00
parent b13cf8585d
commit 00a195e7c0
13 changed files with 444 additions and 2 deletions
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2
include/linux/init.h
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@ -46,7 +46,7 @@
/* These are for everybody (although not all archs will actually
discard it in modules) */
#define __init __section(.init.text) __cold notrace __latent_entropy __noretpoline
#define __init __section(.init.text) __cold notrace __latent_entropy __noretpoline __nocfi
#define __initdata __section(.init.data)
#define __initconst __section(.init.rodata)
#define __exitdata __section(.exit.data)