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| author | Christophe Leroy <christophe.leroy@c-s.fr> | 2016-11-22 11:49:30 +0100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2016-11-23 12:57:15 +0100 |
| commit | 6533b7c16ee5712041b4e324100550e02a9a5dda (patch) | |
| tree | 4a177902f8805cd188f851154d24a673dc1b5449 /arch/powerpc/kernel/process.c | |
| parent | powerpc: Implement {cmp}xchg for u8 and u16 (diff) | |
| download | linux-6533b7c16ee5712041b4e324100550e02a9a5dda.tar.xz linux-6533b7c16ee5712041b4e324100550e02a9a5dda.zip | |
powerpc: Initial stack protector (-fstack-protector) support
Partialy copied from commit c743f38013aef ("ARM: initial stack protector
(-fstack-protector) support")
This is the very basic stuff without the changing canary upon
task switch yet. Just the Kconfig option and a constant canary
value initialized at boot time.
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/kernel/process.c')
| -rw-r--r-- | arch/powerpc/kernel/process.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c index 5b62e8c36210..9da9a42595ce 100644 --- a/arch/powerpc/kernel/process.c +++ b/arch/powerpc/kernel/process.c @@ -64,6 +64,12 @@ #include <linux/kprobes.h> #include <linux/kdebug.h> +#ifdef CONFIG_CC_STACKPROTECTOR +#include <linux/stackprotector.h> +unsigned long __stack_chk_guard __read_mostly; +EXPORT_SYMBOL(__stack_chk_guard); +#endif + /* Transactional Memory debug */ #ifdef TM_DEBUG_SW #define TM_DEBUG(x...) printk(KERN_INFO x) |