Merge remote-tracking branch 'remotes/dgibson/tags/ppc-for-6.2-20211109' into staging

ppc patch queue for 2021-11-09

Here's the latest set of ppc related patches for qemu-6.2, which I
hope will squeeze in just barely before the hard freeze.

This set includes a change to MAINTAINERS moving maintainership of ppc
from myself and Greg Kurz to Cédric le Goater and Daniel Henrique
Barboza.  So, I expect this to be my last pull request as ppc
maintainer.  It's been great, but it's time I moved onto other things.

Apart from that, this patchset is mostly a lot of updates to TCG
implementations of ISA 3.1 (POWER10) instructions from the El Dorado
team.  There are also a handful of other fixes.

# gpg: Signature made Tue 09 Nov 2021 05:14:33 AM CET
# gpg:                using RSA key 75F46586AE61A66CC44E87DC6C38CACA20D9B392
# gpg: Good signature from "David Gibson <david@gibson.dropbear.id.au>" [full]
# gpg:                 aka "David Gibson (kernel.org) <dwg@kernel.org>" [unknown]
# gpg:                 aka "David Gibson (Red Hat) <dgibson@redhat.com>" [full]
# gpg:                 aka "David Gibson (ozlabs.org) <dgibson@ozlabs.org>" [full]

* remotes/dgibson/tags/ppc-for-6.2-20211109: (54 commits)
  spapr_numa.c: FORM2 table handle nodes with no distance info
  target/ppc, hw/ppc: Change maintainers
  target/ppc: cntlzdm/cnttzdm implementation without brcond
  target/ppc: Implement lxvkq instruction
  target/ppc: Implement xxblendvb/xxblendvh/xxblendvw/xxblendvd instructions
  target/ppc: implemented XXSPLTIDP instruction
  target/ppc: Implemented XXSPLTIW using decodetree
  target/ppc: implemented XXSPLTI32DX
  target/ppc: moved XXSPLTIB to using decodetree
  target/ppc: moved XXSPLTW to using decodetree
  target/ppc: added the instructions PLXVP and PSTXVP
  target/ppc: added the instructions PLXV and PSTXV
  target/ppc: added the instructions LXVPX and STXVPX
  target/ppc: added the instructions LXVP and STXVP
  target/ppc: moved stxvx and lxvx from legacy to decodtree
  target/ppc: moved stxv and lxv from legacy to decodtree
  target/ppc: receive high/low as argument in get/set_cpu_vsr
  target/ppc: Introduce REQUIRE_VSX macro
  target/ppc: Implement Vector Extract Double to VSR using GPR index insns
  target/ppc: Move vinsertb/vinserth/vinsertw/vinsertd to decodetree
  ...

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

3 files changed, 20 insertions, 7 deletions

diff --git a/hw/ppc/pegasos2.c b/hw/ppc/pegasos2.c
index e427ac2fe0..298e6b93e2 100644
--- a/hw/ppc/pegasos2.c
+++ b/hw/ppc/pegasos2.c
@@ -23,6 +23,7 @@
 #include "hw/qdev-properties.h"
 #include "sysemu/reset.h"
 #include "sysemu/runstate.h"
+#include "sysemu/qtest.h"
 #include "hw/boards.h"
 #include "hw/loader.h"
 #include "hw/fw-path-provider.h"
@@ -199,7 +200,7 @@ static void pegasos2_init(MachineState *machine)
         if (!pm->vof) {
             warn_report("Option -kernel may be ineffective with -bios.");
         }
-    } else if (pm->vof) {
+    } else if (pm->vof && !qtest_enabled()) {
         warn_report("Using Virtual OpenFirmware but no -kernel option.");
     }
 
diff --git a/hw/ppc/pnv_pnor.c b/hw/ppc/pnv_pnor.c
index 5ef1cf2afb..83ecccca28 100644
--- a/hw/ppc/pnv_pnor.c
+++ b/hw/ppc/pnv_pnor.c
@@ -36,7 +36,7 @@ static void pnv_pnor_update(PnvPnor *s, int offset, int size)
     int offset_end;
     int ret;
 
-    if (s->blk) {
+    if (!s->blk || !blk_is_writable(s->blk)) {
         return;
     }
 
diff --git a/hw/ppc/spapr_numa.c b/hw/ppc/spapr_numa.c
index 5822938448..56ab2a5fb6 100644
--- a/hw/ppc/spapr_numa.c
+++ b/hw/ppc/spapr_numa.c
@@ -546,12 +546,24 @@ static void spapr_numa_FORM2_write_rtas_tables(SpaprMachineState *spapr,
              * NUMA nodes, but QEMU adds the default NUMA node without
              * adding the numa_info to retrieve distance info from.
              */
-            if (src == dst) {
-                distance_table[i++] = NUMA_DISTANCE_MIN;
-                continue;
+            distance_table[i] = numa_info[src].distance[dst];
+            if (distance_table[i] == 0) {
+                /*
+                 * In case QEMU adds a default NUMA single node when the user
+                 * did not add any, or where the user did not supply distances,
+                 * the value will be 0 here. Populate the table with a fallback
+                 * simple local / remote distance.
+                 */
+                if (src == dst) {
+                    distance_table[i] = NUMA_DISTANCE_MIN;
+                } else {
+                    distance_table[i] = numa_info[src].distance[dst];
+                    if (distance_table[i] < NUMA_DISTANCE_MIN) {
+                        distance_table[i] = NUMA_DISTANCE_DEFAULT;
+                    }
+                }
             }
-
-            distance_table[i++] = numa_info[src].distance[dst];
+            i++;
         }
     }