summaryrefslogtreecommitdiff
path: root/arch/arm64/kernel/asm-offsets.c
diff options
context:
space:
mode:
authorSami Tolvanen <samitolvanen@google.com>2020-04-27 09:00:16 -0700
committerWill Deacon <will@kernel.org>2020-05-15 16:35:50 +0100
commit5287569a790d2546a06db07e391bf84b8bd6cf51 (patch)
tree137dc42c9e15afc1b7880798d2ea1ed146301211 /arch/arm64/kernel/asm-offsets.c
parent9654736891c3ac6a60b52ce70d33cf57cf95bff7 (diff)
downloadlinux-next-5287569a790d2546a06db07e391bf84b8bd6cf51.tar.gz
arm64: Implement Shadow Call Stack
This change implements shadow stack switching, initial SCS set-up, and interrupt shadow stacks for arm64. Signed-off-by: Sami Tolvanen <samitolvanen@google.com> Reviewed-by: Kees Cook <keescook@chromium.org> Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'arch/arm64/kernel/asm-offsets.c')
-rw-r--r--arch/arm64/kernel/asm-offsets.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/arm64/kernel/asm-offsets.c b/arch/arm64/kernel/asm-offsets.c
index 9981a0a5a87f..d7934250b68c 100644
--- a/arch/arm64/kernel/asm-offsets.c
+++ b/arch/arm64/kernel/asm-offsets.c
@@ -34,6 +34,10 @@ int main(void)
#ifdef CONFIG_ARM64_SW_TTBR0_PAN
DEFINE(TSK_TI_TTBR0, offsetof(struct task_struct, thread_info.ttbr0));
#endif
+#ifdef CONFIG_SHADOW_CALL_STACK
+ DEFINE(TSK_TI_SCS_BASE, offsetof(struct task_struct, thread_info.scs_base));
+ DEFINE(TSK_TI_SCS_OFFSET, offsetof(struct task_struct, thread_info.scs_offset));
+#endif
DEFINE(TSK_STACK, offsetof(struct task_struct, stack));
#ifdef CONFIG_STACKPROTECTOR
DEFINE(TSK_STACK_CANARY, offsetof(struct task_struct, stack_canary));