Merge tag 'powerpc-3.19-3' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux

Pull powerpc fixes from Michael Ellerman:

 - Wire up sys_execveat(). Tested on 32 & 64 bit.

 - Fix for kdump on LE systems with cpus hot unplugged.

 - Revert Anton's fix for "kernel BUG at kernel/smpboot.c:134!", this
   broke other platforms, we'll do a proper fix for 3.20.

* tag 'powerpc-3.19-3' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux:
  Revert "powerpc: Secondary CPUs must set cpu_callin_map after setting active and online"
  powerpc/kdump: Ignore failure in enabling big endian exception during crash
  powerpc: Wire up sys_execveat() syscall

1 files changed, 7 insertions, 1 deletions

diff --git a/arch/powerpc/platforms/pseries/lpar.c b/arch/powerpc/platforms/pseries/lpar.c
index 469751d92004..b5682fd6c984 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