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authorTejun Heo <tj@kernel.org>2009-01-20 12:29:19 +0900
committerTejun Heo <tj@kernel.org>2009-01-20 12:29:19 +0900
commitc6e50f93db5bd0895ec7c7d1b6f3886c6e1f11b6 (patch)
tree3d6b2d04118bb61fb50cf7624aaf7f7e4f5916ce /arch/x86/kernel/process_64.c
parent7890ba8c87604ca4c2c73f7de846bf5305d743e4 (diff)
downloadblackbird-op-linux-c6e50f93db5bd0895ec7c7d1b6f3886c6e1f11b6.tar.gz
blackbird-op-linux-c6e50f93db5bd0895ec7c7d1b6f3886c6e1f11b6.zip
x86: cleanup stack protector
Impact: cleanup Make the following cleanups. * remove duplicate comment from boot_init_stack_canary() which fits better in the other place - cpu_idle(). * move stack_canary offset check from __switch_to() to boot_init_stack_canary(). Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'arch/x86/kernel/process_64.c')
-rw-r--r--arch/x86/kernel/process_64.c7
1 files changed, 0 insertions, 7 deletions
diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c
index aa89eabf09e0..088bc9a0f82c 100644
--- a/arch/x86/kernel/process_64.c
+++ b/arch/x86/kernel/process_64.c
@@ -638,13 +638,6 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p)
percpu_write(kernel_stack,
(unsigned long)task_stack_page(next_p) +
THREAD_SIZE - KERNEL_STACK_OFFSET);
-#ifdef CONFIG_CC_STACKPROTECTOR
- /*
- * Build time only check to make sure the stack_canary is at
- * offset 40 in the pda; this is a gcc ABI requirement
- */
- BUILD_BUG_ON(offsetof(struct x8664_pda, stack_canary) != 40);
-#endif
/*
* Now maybe reload the debug registers and handle I/O bitmaps
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