[PATCH] powerpc: hypervisor check in pseries_kexec_cpu_down

We call unregister_vpa but we don't check to see if the hypervisor
supports this.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Acked-by: Anton Blanchard <anton@samba.org>
--
 arch/powerpc/platforms/pseries/setup.c |    2 +-
 1 files changed, 1 insertion(+), 1 deletion(-)
Signed-off-by: Paul Mackerras <paulus@samba.org>

diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c
index da6ceba..9edeca8 100644 (file)
--- a/arch/powerpc/platforms/pseries/setup.c
+++ b/arch/powerpc/platforms/pseries/setup.c
@@ -585,7 +585,7 @@ static int pSeries_pci_probe_mode(struct pci_bus *bus)
 static void pseries_kexec_cpu_down(int crash_shutdown, int secondary)
 {
        /* Don't risk a hypervisor call if we're crashing */
-       if (!crash_shutdown) {
+       if (firmware_has_feature(FW_FEATURE_SPLPAR) && !crash_shutdown) {
                unsigned long vpa = __pa(get_lppaca());
 
                if (unregister_vpa(hard_smp_processor_id(), vpa)) {