From: "Naveen N. Rao" <naveen.n.rao@linux.vnet.ibm.com>
To: Michael Ellerman <mpe@ellerman.id.au>
Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com>,
Masami Hiramatsu <mhiramat@kernel.org>,
Nicholas Piggin <npiggin@gmail.com>,
linuxppc-dev@lists.ozlabs.org
Subject: [PATCH v3 2/6] powerpc/64s: Convert .L__replay_interrupt_return to a local label
Date: Thu, 22 Jun 2017 00:08:38 +0530 [thread overview]
Message-ID: <e1a688655f74052b98ae9eed8cad864b4e8c8183.1498069502.git.naveen.n.rao@linux.vnet.ibm.com> (raw)
In-Reply-To: <cover.1498069502.git.naveen.n.rao@linux.vnet.ibm.com>
In-Reply-To: <cover.1498069502.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>
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 07b79c2c70f8..2df6d7b3070f 100644
--- a/arch/powerpc/kernel/exceptions-64s.S
+++ b/arch/powerpc/kernel/exceptions-64s.S
@@ -1629,7 +1629,7 @@ _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
@@ -1647,6 +1647,6 @@ 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
next prev parent reply other threads:[~2017-06-21 18:39 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-21 18:38 [PATCH v3 0/6] powerpc: build out kprobes blacklist -- series 3 Naveen N. Rao
2017-06-21 18:38 ` [PATCH v3 1/6] powerpc64/elfv1: Validate function pointer address in the function descriptor Naveen N. Rao
2017-06-22 3:22 ` Nicholas Piggin
2017-06-22 10:59 ` Michael Ellerman
2017-06-22 13:06 ` Nicholas Piggin
2017-06-22 14:01 ` Naveen N. Rao
2017-06-21 18:38 ` Naveen N. Rao [this message]
2017-06-22 3:23 ` [PATCH v3 2/6] powerpc/64s: Convert .L__replay_interrupt_return to a local label Nicholas Piggin
2017-06-21 18:38 ` [PATCH v3 3/6] powerpc/64s: Blacklist system_call() and system_call_common() from kprobes Naveen N. Rao
2017-06-22 3:36 ` Nicholas Piggin
2017-06-22 11:07 ` Michael Ellerman
2017-06-22 13:08 ` Nicholas Piggin
2017-06-22 14:34 ` Naveen N. Rao
2017-06-21 18:38 ` [PATCH v3 4/6] powerpc/64s: Un-blacklist system_call() " Naveen N. Rao
2017-06-22 3:41 ` Nicholas Piggin
2017-06-22 11:14 ` Michael Ellerman
2017-06-22 13:14 ` Nicholas Piggin
2017-06-22 15:43 ` Naveen N. Rao
2017-06-21 18:38 ` [PATCH v3 5/6] powerpc/64s: Blacklist functions invoked on a trap Naveen N. Rao
2017-06-22 3:44 ` Nicholas Piggin
2017-06-22 11:12 ` Michael Ellerman
2017-06-21 18:38 ` [PATCH v3 6/6] powerpc/64s: Blacklist rtas entry/exit from kprobes Naveen N. Rao
2017-06-22 3:48 ` Nicholas Piggin
2017-06-22 16:52 ` Naveen N. Rao
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