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s390/head64: correct init_task stack setup

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Add missing allocation of pt_regs at the bottom of the stack. This
makes it consistent with other stack setup cases and also what stack
unwinder expects.

Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
This commit is contained in:
Vasily Gorbik 2019-11-22 17:15:35 +01:00
parent 97806dfb6f
commit cb7948e8c3
1 changed files with 1 additions and 1 deletions
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2
arch/s390/kernel/head64.S
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@ -31,7 +31,7 @@ ENTRY(startup_continue)
#
larl %r14,init_task
stg %r14,__LC_CURRENT
larl %r15,init_thread_union+THREAD_SIZE-STACK_FRAME_OVERHEAD
larl %r15,init_thread_union+THREAD_SIZE-STACK_FRAME_OVERHEAD-__PT_SIZE
#ifdef CONFIG_KASAN
brasl %r14,kasan_early_init
#endif