[PATCH] spapr: Migrate ail-mode-3 spapr cap

[Nicholas Piggin <npiggin@gmail.com>]

This cap did not add the migration code when it was introduced. This
results in migration failure when changing the default using the
command line.

Cc: qemu-stable@nongnu.org
Fixes: ccc5a4c5e10 ("spapr: Add SPAPR_CAP_AIL_MODE_3 for AIL mode 3 support for H_SET_MODE hcall")
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
---
 include/hw/ppc/spapr.h | 1 +
 hw/ppc/spapr.c         | 1 +
 hw/ppc/spapr_caps.c    | 1 +
 3 files changed, 3 insertions(+)

diff --git a/include/hw/ppc/spapr.h b/include/hw/ppc/spapr.h
index 4aaf23d28f..f6de3e9972 100644
--- a/include/hw/ppc/spapr.h
+++ b/include/hw/ppc/spapr.h
@@ -1004,6 +1004,7 @@ extern const VMStateDescription vmstate_spapr_cap_large_decr;
 extern const VMStateDescription vmstate_spapr_cap_ccf_assist;
 extern const VMStateDescription vmstate_spapr_cap_fwnmi;
 extern const VMStateDescription vmstate_spapr_cap_rpt_invalidate;
+extern const VMStateDescription vmstate_spapr_cap_ail_mode_3;
 extern const VMStateDescription vmstate_spapr_wdt;
 
 static inline uint8_t spapr_get_cap(SpaprMachineState *spapr, int cap)
diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
index d2d1e310a3..065f58ec93 100644
--- a/hw/ppc/spapr.c
+++ b/hw/ppc/spapr.c
@@ -2169,6 +2169,7 @@ static const VMStateDescription vmstate_spapr = {
         &vmstate_spapr_cap_fwnmi,
         &vmstate_spapr_fwnmi,
         &vmstate_spapr_cap_rpt_invalidate,
+        &vmstate_spapr_cap_ail_mode_3,
         &vmstate_spapr_cap_nested_papr,
         NULL
     }
diff --git a/hw/ppc/spapr_caps.c b/hw/ppc/spapr_caps.c
index 0a15415a1d..2f74923560 100644
--- a/hw/ppc/spapr_caps.c
+++ b/hw/ppc/spapr_caps.c
@@ -974,6 +974,7 @@ SPAPR_CAP_MIG_STATE(large_decr, SPAPR_CAP_LARGE_DECREMENTER);
 SPAPR_CAP_MIG_STATE(ccf_assist, SPAPR_CAP_CCF_ASSIST);
 SPAPR_CAP_MIG_STATE(fwnmi, SPAPR_CAP_FWNMI);
 SPAPR_CAP_MIG_STATE(rpt_invalidate, SPAPR_CAP_RPT_INVALIDATE);
+SPAPR_CAP_MIG_STATE(ail_mode_3, SPAPR_CAP_AIL_MODE_3);
 
 void spapr_caps_init(SpaprMachineState *spapr)
 {
-- 
2.43.0