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authorGlauber Costa <gcosta@redhat.com>2008-05-27 18:22:54 -0700
committerIngo Molnar <mingo@elte.hu>2008-07-08 12:48:14 +0200
commit9cf4f298e29abba25c16679fe7be70898223167e (patch)
tree009af01f7c8001fb86fcfa25226d0c78248b83c9 /arch/x86/kernel/head_64.S
parenta7bf0bd5e6af7fe69342dabf2a3b721f0163469a (diff)
downloadop-kernel-dev-9cf4f298e29abba25c16679fe7be70898223167e.zip
op-kernel-dev-9cf4f298e29abba25c16679fe7be70898223167e.tar.gz
x86: use stack_start in x86_64
call x86_64's init_rsp stack_start, just as i386 does. Put a zeroed stack segment for consistency. With this, we can eliminate one ugly ifdef in smpboot.c. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/head_64.S')
-rw-r--r--arch/x86/kernel/head_64.S5
1 files changed, 3 insertions, 2 deletions
diff --git a/arch/x86/kernel/head_64.S b/arch/x86/kernel/head_64.S
index 263b9d1..918a271 100644
--- a/arch/x86/kernel/head_64.S
+++ b/arch/x86/kernel/head_64.S
@@ -191,7 +191,7 @@ ENTRY(secondary_startup_64)
movq %rax, %cr0
/* Setup a boot time stack */
- movq init_rsp(%rip),%rsp
+ movq stack_start(%rip),%rsp
/* zero EFLAGS after setting rsp */
pushq $0
@@ -252,8 +252,9 @@ ENTRY(secondary_startup_64)
.quad x86_64_start_kernel
__FINITDATA
- ENTRY(init_rsp)
+ ENTRY(stack_start)
.quad init_thread_union+THREAD_SIZE-8
+ .word 0
bad_address:
jmp bad_address
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