Commit d92de65c authored by Shaohua Li's avatar Shaohua Li Committed by Linus Torvalds
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[PATCH] variable overflow after hundreds round of hotplug CPU

I'm doing the cpu hotplug stress test and found a variable ('ready') is
overflow after several hundreds rounds of cpu hotplug.  Here is a fix.

Signed-off-by: Shaohua Li<>
Signed-off-by: default avatarAndrew Morton <>
Signed-off-by: default avatarLinus Torvalds <>
parent a13db566
......@@ -299,7 +299,6 @@ is386: movl $2,%ecx # set MP
movl %eax,%cr0
call check_x87
incb ready
lgdt cpu_gdt_descr
lidt idt_descr
ljmp $(__KERNEL_CS),$1f
......@@ -316,8 +315,9 @@ is386: movl $2,%ecx # set MP
lldt %ax
cld # gcc2 wants the direction flag cleared at all times
movb ready, %cl
cmpb $1,%cl
movb ready, %cl
movb $1, ready
cmpb $0,%cl
je 1f # the first CPU calls start_kernel
# all other CPUs call initialize_secondary
call initialize_secondary
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