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Commit 0edfdd10 authored by Kevin Hao's avatar Kevin Hao Committed by Benjamin Herrenschmidt
Browse files

powerpc/ppc64: Remove the unneeded load of ti_flags in resume_kernel 



We already got the value of current_thread_info and ti_flags and store
them into r9 and r4 respectively before jumping to resume_kernel. So
there is no reason to reload them again.

Signed-off-by: default avatarKevin Hao <haokexin@gmail.com>
Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
parent 1443d6a2

arch/powerpc/kernel/entry_64.S

+1 −3
Original line number Diff line number Diff line
@@ -673,9 +673,7 @@ _GLOBAL(ret_from_except_lite) 


resume_kernel:

	/* check current_thread_info, _TIF_EMULATE_STACK_STORE */

	CURRENT_THREAD_INFO(r9, r1)

	ld	r8,TI_FLAGS(r9)

	andis.	r8,r8,_TIF_EMULATE_STACK_STORE@h

	andis.	r8,r4,_TIF_EMULATE_STACK_STORE@h

	beq+	1f



	addi	r8,r1,INT_FRAME_SIZE	/* Get the kprobed function entry */