linux-kernel - [RFC PATCH 09/10] fadump: Invalidate the fadump registration during machine shutdown.

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Message-ID: <20110713180830.6210.75084.stgit@mars.in.ibm.com>
Date:	Wed, 13 Jul 2011 23:38:36 +0530
From:	Mahesh J Salgaonkar <mahesh@...ux.vnet.ibm.com>
To:	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	linuxppc-dev <linuxppc-dev@...ts.ozlabs.org>,
	Linux Kernel <linux-kernel@...r.kernel.org>
Cc:	Michael Ellerman <michael@...erman.id.au>,
	Haren Myneni <hbabu@...ibm.com>,
	Anton Blanchard <anton@...ba.org>,
	Milton Miller <miltonm@....com>,
	"Eric W. Biederman" <ebiederm@...ssion.com>
Subject: [RFC PATCH 09/10] fadump: Invalidate the fadump registration during
	machine shutdown.

From: Mahesh Salgaonkar <mahesh@...ux.vnet.ibm.com>

If dump is active during system reboot, shutdown or halt then invalidate
the fadump registration as it does not get invalidated automatically.

Signed-off-by: Mahesh Salgaonkar <mahesh@...ux.vnet.ibm.com>
---
 arch/powerpc/kernel/setup-common.c |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)

diff --git a/arch/powerpc/kernel/setup-common.c b/arch/powerpc/kernel/setup-common.c
index 79fca26..5683661 100644
--- a/arch/powerpc/kernel/setup-common.c
+++ b/arch/powerpc/kernel/setup-common.c
@@ -61,6 +61,7 @@
 #include <asm/xmon.h>
 #include <asm/cputhreads.h>
 #include <mm/mmu_decl.h>
+#include <asm/fadump.h>
 
 #include "setup.h"
 
@@ -109,6 +110,14 @@ EXPORT_SYMBOL(ppc_do_canonicalize_irqs);
 /* also used by kexec */
 void machine_shutdown(void)
 {
+#ifdef CONFIG_FA_DUMP
+	/*
+	 * if fadump is active, cleanup the fadump registration before we
+	 * shutdown.
+	 */
+	fadump_cleanup();
+#endif
+
 	if (ppc_md.machine_shutdown)
 		ppc_md.machine_shutdown();
 }

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