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
next prev 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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