linux-kernel - [PATCH 147/173] powerpc/kexec: Add ifdef CONFIG_PPC_STD_MMU

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Date:	Mon, 25 Apr 2011 22:04:59 +0200
From:	Willy Tarreau <w@....eu>
To:	linux-kernel@...r.kernel.org, stable@...nel.org,
	stable-review@...nel.org, Greg KH <greg@...ah.com>
Cc:	Ben Hutchings <ben@...adent.org.uk>,
	Debian kernel maintainers <debian-kernel@...ts.debian.org>,
	debian-release@...ts.debian.org,
	"Adam D. Barratt" <adam@...m-barratt.org.uk>,
	paulmck@...ux.vnet.ibm.com, mikey@...ling.org,
	benh@...nel.crashing.org, anton@...ba.org,
	dann frazier <dannf@...nf.org>, galak@...nel.crashing.org,
	Kamalesh Babulal <kamalesh@...ux.vnet.ibm.com>,
	Greg Kroah-Hartman <gregkh@...e.de>
Subject: [PATCH 147/173] powerpc/kexec: Add ifdef CONFIG_PPC_STD_MMU_64 to PPC64 code

2.6.27.59-stable review patch.  If anyone has any objections, please let us know.

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

From: Kamalesh Babulal <kamalesh@...ux.vnet.ibm.com>

powerpc/kexec: Add ifdef CONFIG_PPC_STD_MMU_64 to PPC64 code

This patch introduces PPC64 specific #ifdef bits from the upstream
commit: b3df895aebe091b1657a42a8c859bd49fc96646b.

Reported-and-tested-by: dann frazier <dannf@...nf.org>
Signed-off-by: Kumar Gala <galak@...nel.crashing.org>
Signed-off-by: Kamalesh Babulal <kamalesh@...ux.vnet.ibm.com>
cc: Benjamin Herrenschmidt <benh@...nel.crashing.org>
cc: Anton Blanchard <anton@...ba.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

---
 arch/powerpc/kernel/crash.c |    4 ++++
 1 file changed, 4 insertions(+)

--- a/arch/powerpc/kernel/crash.c
+++ b/arch/powerpc/kernel/crash.c
@@ -163,6 +163,7 @@ static void crash_kexec_prepare_cpus(int
 }
 
 /* wait for all the CPUs to hit real mode but timeout if they don't come in */
+#ifdef CONFIG_PPC_STD_MMU_64
 static void crash_kexec_wait_realmode(int cpu)
 {
 	unsigned int msecs;
@@ -187,6 +188,7 @@ static void crash_kexec_wait_realmode(in
 	}
 	mb();
 }
+#endif
 
 /*
  * This function will be called by secondary cpus or by kexec cpu
@@ -445,7 +447,9 @@ void default_machine_crash_shutdown(stru
 	crash_kexec_prepare_cpus(crashing_cpu);
 	cpu_set(crashing_cpu, cpus_in_crash);
 	crash_kexec_stop_spus();
+#ifdef CONFIG_PPC_STD_MMU_64
 	crash_kexec_wait_realmode(crashing_cpu);
+#endif
 	if (ppc_md.kexec_cpu_down)
 		ppc_md.kexec_cpu_down(1, 0);
 }


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