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From: "Naveen N. Rao" <naveen.n.rao@linux.vnet.ibm.com>
To: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Piggin <npiggin@gmail.com>,
	Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com>,
	Masami Hiramatsu <mhiramat@kernel.org>,
	Anton Blanchard <anton@samba.org>,
	linuxppc-dev@lists.ozlabs.org
Subject: [PATCH v4 2/7] powerpc/64s: Convert .L__replay_interrupt_return to a local label
Date: Thu, 29 Jun 2017 16:11:05 +0530	[thread overview]
Message-ID: <3c36ca1ad1a56c51f5da4e8c3690975ed4d86723.1498732172.git.naveen.n.rao@linux.vnet.ibm.com> (raw)
In-Reply-To: <cover.1498732172.git.naveen.n.rao@linux.vnet.ibm.com>
In-Reply-To: <cover.1498732172.git.naveen.n.rao@linux.vnet.ibm.com>

Commit b48bbb82e2b835 ("powerpc/64s: Don't unbalance the return branch
predictor in __replay_interrupt()") introduced __replay_interrupt_return
symbol with '.L' prefix in hopes of keeping it private. However, due to
the use of LOAD_REG_ADDR(), the assembler kept this symbol visible. Fix
the same by instead using the local label '1'.

Fixes: Commit b48bbb82e2b835 ("powerpc/64s: Don't unbalance the return branch
predictor in __replay_interrupt()")
Suggested-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
---
 arch/powerpc/kernel/exceptions-64s.S | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S
index 02a82777fd5b..3262e447b895 100644
--- a/arch/powerpc/kernel/exceptions-64s.S
+++ b/arch/powerpc/kernel/exceptions-64s.S
@@ -1631,7 +1631,7 @@ _GLOBAL(__replay_interrupt)
 	 * we don't give a damn about, so we don't bother storing them.
 	 */
 	mfmsr	r12
-	LOAD_REG_ADDR(r11, .L__replay_interrupt_return)
+	LOAD_REG_ADDR(r11, 1f)
 	mfcr	r9
 	ori	r12,r12,MSR_EE
 	cmpwi	r3,0x900
@@ -1649,6 +1649,6 @@ FTR_SECTION_ELSE
 	cmpwi	r3,0xa00
 	beq	doorbell_super_common_msgclr
 ALT_FTR_SECTION_END_IFSET(CPU_FTR_HVMODE)
-.L__replay_interrupt_return:
+1:
 	blr
 
-- 
2.13.1

  parent reply	other threads:[~2017-06-29 10:41 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-06-29 10:41 [PATCH v4 0/7] powerpc: build out kprobes blacklist -- series 3 Naveen N. Rao
2017-06-29 10:41 ` [PATCH v4 1/7] powerpc64/elfv1: Only dereference function descriptor for non-text symbols Naveen N. Rao
2017-06-29 10:49   ` Nicholas Piggin
2017-06-29 11:48     ` Naveen N. Rao
2017-06-29 10:41 ` Naveen N. Rao [this message]
2017-06-29 10:41 ` [PATCH v4 3/7] powerpc/64s: Blacklist system_call() and system_call_common() from kprobes Naveen N. Rao
2017-06-29 10:41 ` [PATCH v4 4/7] powerpc/64s: Move system_call() symbol to just after setting MSR_EE Naveen N. Rao
2017-06-29 11:44   ` Nicholas Piggin
2017-06-29 10:41 ` [PATCH v4 5/7] powerpc/64s: Un-blacklist system_call() from kprobes Naveen N. Rao
2017-06-29 10:55   ` Nicholas Piggin
2017-06-29 11:51     ` Naveen N. Rao
2017-06-29 10:41 ` [PATCH v4 6/7] powerpc/64s: Blacklist functions invoked on a trap Naveen N. Rao
2017-06-29 10:41 ` [PATCH v4 7/7] powerpc/64s: Blacklist rtas entry/exit from kprobes Naveen N. Rao
2017-06-29 11:01   ` Nicholas Piggin
2017-06-29 11:54     ` Naveen N. Rao
2017-06-29 12:13       ` Nicholas Piggin
2017-06-29 16:51         ` Naveen N. Rao

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