linux-kernel - Re: [git pull] Please pull powerpc.git merge branch

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Message-ID: <20110520135845.GG25179@zod.rchland.ibm.com>
Date:	Fri, 20 May 2011 09:58:45 -0400
From:	Josh Boyer <jwboyer@...ux.vnet.ibm.com>
To:	Richard Cochran <richardcochran@...il.com>
Cc:	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	linuxppc-dev list <linuxppc-dev@...abs.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Linux Kernel list <linux-kernel@...r.kernel.org>
Subject: Re: [git pull] Please pull powerpc.git merge branch

On Fri, May 20, 2011 at 03:23:29PM +0200, Richard Cochran wrote:
>When I try to build 'next' (now at 208b3a4c), it does not compile due
>to a change from the following commit.
>
>> Benjamin Herrenschmidt (1):
>>       powerpc/smp: Make start_secondary_resume available to all CPU variants
>
>I would appreciate your help in getting this fixed...

Could you try the patch below?

Commit 69e3cea8d5fd526 introduced start_secondary_resume to misc_32.S,
however it uses a 64-bit instruction which is not valid on 32-bit
platforms.  Use 'stw' instead.

Reported-by: Richard Cochran <richardcochran@...il.com>
Signed-off-by: Josh Boyer <jwboyer@...ux.vnet.ibm.com>

---

diff --git a/arch/powerpc/kernel/misc_32.S
b/arch/powerpc/kernel/misc_32.S
index 402560e..998a100 100644
--- a/arch/powerpc/kernel/misc_32.S
+++ b/arch/powerpc/kernel/misc_32.S
@@ -700,7 +700,7 @@ _GLOBAL(start_secondary_resume)
	rlwinm  r1,r1,0,0,(31-THREAD_SHIFT)     /* current_thread_info() */
	addi    r1,r1,THREAD_SIZE-STACK_FRAME_OVERHEAD
	li      r3,0
-	std     r3,0(r1)                /* Zero the stack frame pointer */
+	stw     r3,0(r1)                /* Zero the stack frame pointer */
	bl      start_secondary
	b       .
 #endif /* CONFIG_SMP */

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