linux-kernel - [PATCH 4.8 037/140] powerpc/xmon: Dont use ld on 32-bit

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Message-Id: <20161026122221.976226588@linuxfoundation.org>
Date:   Wed, 26 Oct 2016 14:21:37 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        John Paul Adrian Glaubitz <glaubitz@...sik.fu-berlin.de>,
        Michael Ellerman <mpe@...erman.id.au>
Subject: [PATCH 4.8 037/140] powerpc/xmon: Dont use ld on 32-bit

4.8-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Michael Ellerman <mpe@...erman.id.au>

commit b42d9023a31e384504f5b53fc9a437d5536a3f63 upstream.

In commit 31cdd0c39c75 ("powerpc/xmon: Fix SPR read/write commands and
add command to dump SPRs") I added two uses of the "ld" instruction in
spr_access.S. "ld" is a 64-bit instruction, so shouldn't be used on
32-bit CPUs.

Replace it with PPC_LL which is a macro that gives us either "ld" or
"lwz" depending on whether we're 64 or 32-bit.

Fixes: 31cdd0c39c75 ("powerpc/xmon: Fix SPR read/write commands and add command to dump SPRs")
Reported-by: John Paul Adrian Glaubitz <glaubitz@...sik.fu-berlin.de>
Signed-off-by: Michael Ellerman <mpe@...erman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 arch/powerpc/xmon/spr_access.S |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/arch/powerpc/xmon/spr_access.S
+++ b/arch/powerpc/xmon/spr_access.S
@@ -2,12 +2,12 @@
 
 /* unsigned long xmon_mfspr(sprn, default_value) */
 _GLOBAL(xmon_mfspr)
-	ld	r5, .Lmfspr_table@got(r2)
+	PPC_LL	r5, .Lmfspr_table@got(r2)
 	b	xmon_mxspr
 
 /* void xmon_mtspr(sprn, new_value) */
 _GLOBAL(xmon_mtspr)
-	ld	r5, .Lmtspr_table@got(r2)
+	PPC_LL	r5, .Lmtspr_table@got(r2)
 	b	xmon_mxspr
 
 /*