powerpc: Set missing wakeup bit in LPCR on POWER9

There is a new bit, LPCR_PECE_HVEE (Hypervisor Virtualization Exit
Enable), which controls wakeup from STOP states on Hypervisor
Virtualization Interrupts (which happen to also be all external
interrupts in host or bare metal mode).

It needs to be set or we will miss wakeups.

Fixes: 9baaef0a22c8 ("powerpc/irq: Add support for HV virtualization interrupts")
Cc: stable@vger.kernel.org # v4.8+
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
[mpe: Rename it to HVEE to match the name in the ISA]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

1 files changed, 4 insertions, 4 deletions

diff --git a/arch/powerpc/kernel/cpu_setup_power.S b/arch/powerpc/kernel/cpu_setup_power.S
index 52ff3f025437..37c027ca83b2 100644
--- a/arch/powerpc/kernel/cpu_setup_power.S
+++ b/arch/powerpc/kernel/cpu_setup_power.S
@@ -98,8 +98,8 @@ _GLOBAL(__setup_cpu_power9)
         li      r0,0
         mtspr   SPRN_LPID,r0
         mfspr   r3,SPRN_LPCR
-        ori     r3, r3, LPCR_PECEDH
-        ori     r3, r3, LPCR_HVICE
+        LOAD_REG_IMMEDIATE(r4, LPCR_PECEDH | LPCR_PECE_HVEE | LPCR_HVICE)
+        or      r3, r3, r4
         bl      __init_LPCR
         bl      __init_HFSCR
         bl      __init_tlb_power9
@@ -118,8 +118,8 @@ _GLOBAL(__restore_cpu_power9)
         li      r0,0
         mtspr   SPRN_LPID,r0
         mfspr   r3,SPRN_LPCR
-        ori     r3, r3, LPCR_PECEDH
-        ori     r3, r3, LPCR_HVICE
+        LOAD_REG_IMMEDIATE(r4, LPCR_PECEDH | LPCR_PECE_HVEE | LPCR_HVICE)
+        or      r3, r3, r4
         bl      __init_LPCR
         bl      __init_HFSCR
         bl      __init_tlb_power9