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authorThomas Gleixner <tglx@linutronix.de>2008-07-27 21:43:11 +0200
committerThomas Gleixner <tglx@linutronix.de>2008-07-27 21:43:11 +0200
commit583323b9d2f624884a8c9563fb5a4d795f39ab07 (patch)
tree33a8a505507f6b591c8181b5762ad20a063042fa
parent8be1a6d6c77ab4532e4476fdb8177030ef48b52c (diff)
downloadvexpress-lsk-583323b9d2f624884a8c9563fb5a4d795f39ab07.tar.gz
x86: fix cpu hotplug on 32bit
commit 3e9704739daf46a8ba6593d749c67b5f7cd633d2 ("x86: boot secondary cpus through initial_code") causes the kernel to crash when a CPU is brought online after the read only sections have been write protected. The write to initial_code in do_boot_cpu() fails. Move inital_code to .cpuinit.data section. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: H. Peter Anvin <hpa@zytor.com>
-rw-r--r--arch/x86/kernel/head_32.S8
1 files changed, 5 insertions, 3 deletions
diff --git a/arch/x86/kernel/head_32.S b/arch/x86/kernel/head_32.S
index f67e93441ca..a7010c3a377 100644
--- a/arch/x86/kernel/head_32.S
+++ b/arch/x86/kernel/head_32.S
@@ -456,9 +456,6 @@ is386: movl $2,%ecx # set MP
1:
#endif /* CONFIG_SMP */
jmp *(initial_code)
-.align 4
-ENTRY(initial_code)
- .long i386_start_kernel
/*
* We depend on ET to be correct. This checks for 287/387.
@@ -601,6 +598,11 @@ ignore_int:
#endif
iret
+.section .cpuinit.data,"wa"
+.align 4
+ENTRY(initial_code)
+ .long i386_start_kernel
+
.section .text
/*
* Real beginning of normal "text" segment