[POWERPC] Allow xmon to build on legacy iSeries

xmon still does not run on iSeries, but this allows us to build a combined
kernel that includes it.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>

2 files changed, 10 insertions, 1 deletions

diff --git a/arch/powerpc/Kconfig.debug b/arch/powerpc/Kconfig.debug
index ff16063d67ff..5cce9048ce01 100644
--- a/arch/powerpc/Kconfig.debug
+++ b/arch/powerpc/Kconfig.debug
@@ -77,7 +77,7 @@ config KGDB_CONSOLE
 
 config XMON
         bool "Include xmon kernel debugger"
-        depends on DEBUGGER && !PPC_ISERIES
+        depends on DEBUGGER
         help
           Include in-kernel hooks for the xmon kernel monitor/debugger.
           Unless you are intending to debug the kernel, say N here.
diff --git a/arch/powerpc/xmon/xmon.c b/arch/powerpc/xmon/xmon.c
index dc8a3760a98c..a34ed49e0356 100644
--- a/arch/powerpc/xmon/xmon.c
+++ b/arch/powerpc/xmon/xmon.c
@@ -44,6 +44,7 @@
 #ifdef CONFIG_PPC64
 #include <asm/hvcall.h>
 #include <asm/paca.h>
+#include <asm/iseries/it_lp_reg_save.h>
 #endif
 
 #include "nonstdio.h"
@@ -2580,6 +2581,10 @@ void dump_segments(void)
 
 void xmon_init(int enable)
 {
+#ifdef CONFIG_PPC_ISERIES
+        if (firmware_has_feature(FW_FEATURE_ISERIES))
+                return;
+#endif
         if (enable) {
                 __debugger = xmon;
                 __debugger_ipi = xmon_ipi;
@@ -2617,6 +2622,10 @@ static struct sysrq_key_op sysrq_xmon_op =
 
 static int __init setup_xmon_sysrq(void)
 {
+#ifdef CONFIG_PPC_ISERIES
+        if (firmware_has_feature(FW_FEATURE_ISERIES))
+                return 0;
+#endif
         register_sysrq_key('x', &sysrq_xmon_op);
         return 0;
 }