5 files changed, 26 insertions, 28 deletions

diff --git a/arch/powerpc/platforms/pseries/Kconfig b/arch/powerpc/platforms/pseries/Kconfig
index 756b482f819..a758a9c3bbb 100644
--- a/arch/powerpc/platforms/pseries/Kconfig
+++ b/arch/powerpc/platforms/pseries/Kconfig
@@ -34,6 +34,16 @@ config PPC_SPLPAR
 	  processors, that is, which share physical processors between
 	  two or more partitions.
 
+config DTL
+	bool "Dispatch Trace Log"
+	depends on PPC_SPLPAR && DEBUG_FS
+	help
+	  SPLPAR machines can log hypervisor preempt & dispatch events to a
+	  kernel buffer. Saying Y here will enable logging these events,
+	  which are accessible through a debugfs file.
+
+	  Say N if you are unsure.
+
 config PSERIES_MSI
        bool
        depends on PCI_MSI && PPC_PSERIES && EEH
@@ -123,13 +133,3 @@ config HV_PERF_CTRS
 	  systems. 24x7 is available on Power 8 systems.
 
           If unsure, select Y.
-
-config DTL
-	bool "Dispatch Trace Log"
-	depends on PPC_SPLPAR && DEBUG_FS
-	help
-	  SPLPAR machines can log hypervisor preempt & dispatch events to a
-	  kernel buffer. Saying Y here will enable logging these events,
-	  which are accessible through a debugfs file.
-
-	  Say N if you are unsure.
diff --git a/arch/powerpc/platforms/pseries/hotplug-cpu.c b/arch/powerpc/platforms/pseries/hotplug-cpu.c
index f30cf4d136a..62475440fd4 100644
--- a/arch/powerpc/platforms/pseries/hotplug-cpu.c
+++ b/arch/powerpc/platforms/pseries/hotplug-cpu.c
@@ -272,7 +272,7 @@ static int pseries_add_processor(struct device_node *np)
 		 */
 		printk(KERN_ERR "Cannot add cpu %s; this system configuration"
 		       " supports %d logical cpus.\n", np->full_name,
-		       cpumask_weight(cpu_possible_mask));
+		       num_possible_cpus());
 		goto out_unlock;
 	}
 
diff --git a/arch/powerpc/platforms/pseries/lpar.c b/arch/powerpc/platforms/pseries/lpar.c
index 469751d9200..b5682fd6c98 100644
--- a/arch/powerpc/platforms/pseries/lpar.c
+++ b/arch/powerpc/platforms/pseries/lpar.c
@@ -43,6 +43,7 @@
 #include <asm/trace.h>
 #include <asm/firmware.h>
 #include <asm/plpar_wrappers.h>
+#include <asm/kexec.h>
 #include <asm/fadump.h>
 
 #include "pseries.h"
@@ -267,8 +268,13 @@ static void pSeries_lpar_hptab_clear(void)
 		 * out to the user, but at least this will stop us from
 		 * continuing on further and creating an even more
 		 * difficult to debug situation.
+		 *
+		 * There is a known problem when kdump'ing, if cpus are offline
+		 * the above call will fail. Rather than panicking again, keep
+		 * going and hope the kdump kernel is also little endian, which
+		 * it usually is.
 		 */
-		if (rc)
+		if (rc && !kdump_in_progress())
 			panic("Could not enable big endian exceptions");
 	}
 #endif
diff --git a/arch/powerpc/platforms/pseries/mobility.c b/arch/powerpc/platforms/pseries/mobility.c
index e7cb6d4a871..90cf3dcbd9f 100644
--- a/arch/powerpc/platforms/pseries/mobility.c
+++ b/arch/powerpc/platforms/pseries/mobility.c
@@ -316,34 +316,24 @@ void post_mobility_fixup(void)
 static ssize_t migrate_store(struct class *class, struct class_attribute *attr,
 			     const char *buf, size_t count)
 {
-	struct rtas_args args;
 	u64 streamid;
 	int rc;
+	int vasi_rc = 0;
 
 	rc = kstrtou64(buf, 0, &streamid);
 	if (rc)
 		return rc;
 
-	memset(&args, 0, sizeof(args));
-	args.token = rtas_token("ibm,suspend-me");
-	args.nargs = 2;
-	args.nret = 1;
-
-	args.args[0] = streamid >> 32 ;
-	args.args[1] = streamid & 0xffffffff;
-	args.rets = &args.args[args.nargs];
-
 	do {
-		args.rets[0] = 0;
-		rc = rtas_ibm_suspend_me(&args);
-		if (!rc && args.rets[0] == RTAS_NOT_SUSPENDABLE)
+		rc = rtas_ibm_suspend_me(streamid, &vasi_rc);
+		if (!rc && vasi_rc == RTAS_NOT_SUSPENDABLE)
 			ssleep(1);
-	} while (!rc && args.rets[0] == RTAS_NOT_SUSPENDABLE);
+	} while (!rc && vasi_rc == RTAS_NOT_SUSPENDABLE);
 
 	if (rc)
 		return rc;
-	else if (args.rets[0])
-		return args.rets[0];
+	if (vasi_rc)
+		return vasi_rc;
 
 	post_mobility_fixup();
 	return count;
diff --git a/arch/powerpc/platforms/pseries/ras.c b/arch/powerpc/platforms/pseries/ras.c
index c3b2a7e81dd..02e4a174551 100644
--- a/arch/powerpc/platforms/pseries/ras.c
+++ b/arch/powerpc/platforms/pseries/ras.c
@@ -89,6 +89,8 @@ static void handle_system_shutdown(char event_modifier)
 	case EPOW_SHUTDOWN_ON_UPS:
 		pr_emerg("Loss of power reported by firmware, system is "
 			"running on UPS/battery");
+		pr_emerg("Check RTAS error log for details");
+		orderly_poweroff(true);
 		break;
 
 	case EPOW_SHUTDOWN_LOSS_OF_CRITICAL_FUNCTIONS: