powerpc: Stop using non-architected shared_proc field in lppaca

Although the shared_proc field in the lppaca works today, it is
not architected. A shared processor partition will always have a non
zero yield_count so use that instead. Create a wrapper so users
don't have to know about the details.

In order for older kernels to continue to work on KVM we need
to set the shared_proc bit. While here, remove the ugly bitfield.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

2 files changed, 3 insertions, 3 deletions

diff --git a/arch/powerpc/platforms/pseries/hotplug-cpu.c b/arch/powerpc/platforms/pseries/hotplug-cpu.c
index 217ca5c75b20..1e490cf63a0d 100644
--- a/arch/powerpc/platforms/pseries/hotplug-cpu.c
+++ b/arch/powerpc/platforms/pseries/hotplug-cpu.c
@@ -123,7 +123,7 @@ static void pseries_mach_cpu_die(void)
                 cede_latency_hint = 2;
 
                 get_lppaca()->idle = 1;
-                if (!get_lppaca()->shared_proc)
+                if (!lppaca_shared_proc(get_lppaca()))
                         get_lppaca()->donate_dedicated_cpu = 1;
 
                 while (get_preferred_offline_state(cpu) == CPU_STATE_INACTIVE) {
@@ -137,7 +137,7 @@ static void pseries_mach_cpu_die(void)
 
                 local_irq_disable();
 
-                if (!get_lppaca()->shared_proc)
+                if (!lppaca_shared_proc(get_lppaca()))
                         get_lppaca()->donate_dedicated_cpu = 0;
                 get_lppaca()->idle = 0;
 
diff --git a/arch/powerpc/platforms/pseries/processor_idle.c b/arch/powerpc/platforms/pseries/processor_idle.c
index 4644efa06941..92db881be27e 100644
--- a/arch/powerpc/platforms/pseries/processor_idle.c
+++ b/arch/powerpc/platforms/pseries/processor_idle.c
@@ -308,7 +308,7 @@ static int pseries_idle_probe(void)
                 return -EPERM;
         }
 
-        if (get_lppaca()->shared_proc)
+        if (lppaca_shared_proc(get_lppaca()))
                 cpuidle_state_table = shared_states;
         else
                 cpuidle_state_table = dedicated_states;