powerpc: Fix little endian lppaca, slb_shadow and dtl_entry

The lppaca, slb_shadow and dtl_entry hypervisor structures are
big endian, so we have to byte swap them in little endian builds.

LE KVM hosts will also need to be fixed but for now add an #error
to remind us.

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

1 files changed, 8 insertions, 8 deletions

diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c
index c863aa1f524a..b2bcd34f72d2 100644
--- a/arch/powerpc/kernel/time.c
+++ b/arch/powerpc/kernel/time.c
@@ -210,18 +210,18 @@ static u64 scan_dispatch_log(u64 stop_tb)
         if (!dtl)
                 return 0;
 
-        if (i == vpa->dtl_idx)
+        if (i == be64_to_cpu(vpa->dtl_idx))
                 return 0;
-        while (i < vpa->dtl_idx) {
+        while (i < be64_to_cpu(vpa->dtl_idx)) {
                 if (dtl_consumer)
                         dtl_consumer(dtl, i);
-                dtb = dtl->timebase;
-                tb_delta = dtl->enqueue_to_dispatch_time +
-                        dtl->ready_to_enqueue_time;
+                dtb = be64_to_cpu(dtl->timebase);
+                tb_delta = be32_to_cpu(dtl->enqueue_to_dispatch_time) +
+                        be32_to_cpu(dtl->ready_to_enqueue_time);
                 barrier();
-                if (i + N_DISPATCH_LOG < vpa->dtl_idx) {
+                if (i + N_DISPATCH_LOG < be64_to_cpu(vpa->dtl_idx)) {
                         /* buffer has overflowed */
-                        i = vpa->dtl_idx - N_DISPATCH_LOG;
+                        i = be64_to_cpu(vpa->dtl_idx) - N_DISPATCH_LOG;
                         dtl = local_paca->dispatch_log + (i % N_DISPATCH_LOG);
                         continue;
                 }
@@ -269,7 +269,7 @@ static inline u64 calculate_stolen_time(u64 stop_tb)
 {
         u64 stolen = 0;
 
-        if (get_paca()->dtl_ridx != get_paca()->lppaca_ptr->dtl_idx) {
+        if (get_paca()->dtl_ridx != be64_to_cpu(get_lppaca()->dtl_idx)) {
                 stolen = scan_dispatch_log(stop_tb);
                 get_paca()->system_time -= stolen;
         }