linuxppc-dev.lists.ozlabs.org archive mirror
 help / color / mirror / Atom feed
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

  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

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=e1a688655f74052b98ae9eed8cad864b4e8c8183.1498069502.git.naveen.n.rao@linux.vnet.ibm.com \
    --to=naveen.n.rao@linux.vnet.ibm.com \
    --cc=ananth@linux.vnet.ibm.com \
    --cc=linuxppc-dev@lists.ozlabs.org \
    --cc=mhiramat@kernel.org \
    --cc=mpe@ellerman.id.au \
    --cc=npiggin@gmail.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).