Merge remote-tracking branch 'remotes/legoater/tags/pull-ppc-20220130' into staging

ppc 7.0 queue:

* Exception and TLB fixes for the 405 CPU (Fabiano and Cedric)
* spapr fixes (Alexey and Daniel)
* PowerNV PHB3/4 fixes (Frederic and Daniel)
* PowerNV XIVE improvements (Cedric)
* 603 CPUs fixes (Christophe)
* Book-E exception fixes (Vitaly)
* Misc compile issues  (Philippe and Fabiano)
* Exception model rework for the BookS CPUs (Fabiano)
* Exception model rework for the 74xx CPUs (Fabiano)
* Removal of 602 CPUs

# gpg: Signature made Sun 30 Jan 2022 17:42:23 GMT
# gpg:                using RSA key A0F66548F04895EBFE6B0B6051A343C7CFFBECA1
# gpg: Good signature from "Cédric Le Goater <clg@kaod.org>" [undefined]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg:          There is no indication that the signature belongs to the owner.
# Primary key fingerprint: A0F6 6548 F048 95EB FE6B  0B60 51A3 43C7 CFFB ECA1

* remotes/legoater/tags/pull-ppc-20220130: (41 commits)
  target/ppc: Remove support for the PowerPC 602 CPU
  target/ppc: 74xx: Set SRRs directly in exception code
  target/ppc: 74xx: System Reset interrupt cleanup
  target/ppc: 74xx: System Call exception cleanup
  target/ppc: 74xx: Program exception cleanup
  target/ppc: 74xx: External interrupt cleanup
  target/ppc: 74xx: Machine Check exception cleanup
  target/ppc: Simplify powerpc_excp_74xx
  target/ppc: Introduce powerpc_excp_74xx
  target/ppc: books: Program exception cleanup
  target/ppc: books: External interrupt cleanup
  target/ppc: books: Machine Check exception cleanup
  target/ppc: Simplify powerpc_excp_books
  target/ppc: Introduce powerpc_excp_books
  target/ppc: 405: Watchdog timer exception cleanup
  target/ppc: 405: Program exception cleanup
  target/ppc: 405: Instruction storage interrupt cleanup
  target/ppc: 405: Data Storage exception cleanup
  target/ppc: 405: Debug exception cleanup
  target/ppc: 405: Alignment exception cleanup
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 18 insertions, 4 deletions

diff --git a/hw/intc/pnv_xive.c b/hw/intc/pnv_xive.c
index bb20751..621b20a 100644
--- a/hw/intc/pnv_xive.c
+++ b/hw/intc/pnv_xive.c
@@ -172,7 +172,12 @@ static uint64_t pnv_xive_vst_addr_indirect(PnvXive *xive, uint32_t type,
 
     /* Get the page size of the indirect table. */
     vsd_addr = vsd & VSD_ADDRESS_MASK;
-    ldq_be_dma(&address_space_memory, vsd_addr, &vsd, MEMTXATTRS_UNSPECIFIED);
+    if (ldq_be_dma(&address_space_memory, vsd_addr, &vsd,
+                    MEMTXATTRS_UNSPECIFIED)) {
+        xive_error(xive, "VST: failed to access %s entry %x @0x%" PRIx64,
+                   info->name, idx, vsd_addr);
+        return 0;
+    }
 
     if (!(vsd & VSD_ADDRESS_MASK)) {
 #ifdef XIVE_DEBUG
@@ -195,8 +200,12 @@ static uint64_t pnv_xive_vst_addr_indirect(PnvXive *xive, uint32_t type,
     /* Load the VSD we are looking for, if not already done */
     if (vsd_idx) {
         vsd_addr = vsd_addr + vsd_idx * XIVE_VSD_SIZE;
-        ldq_be_dma(&address_space_memory, vsd_addr, &vsd,
-                   MEMTXATTRS_UNSPECIFIED);
+        if (ldq_be_dma(&address_space_memory, vsd_addr, &vsd,
+                       MEMTXATTRS_UNSPECIFIED)) {
+            xive_error(xive, "VST: failed to access %s entry %x @0x%"
+                       PRIx64, info->name, vsd_idx, vsd_addr);
+            return 0;
+        }
 
         if (!(vsd & VSD_ADDRESS_MASK)) {
 #ifdef XIVE_DEBUG
@@ -543,7 +552,12 @@ static uint64_t pnv_xive_vst_per_subpage(PnvXive *xive, uint32_t type)
 
     /* Get the page size of the indirect table. */
     vsd_addr = vsd & VSD_ADDRESS_MASK;
-    ldq_be_dma(&address_space_memory, vsd_addr, &vsd, MEMTXATTRS_UNSPECIFIED);
+    if (ldq_be_dma(&address_space_memory, vsd_addr, &vsd,
+                   MEMTXATTRS_UNSPECIFIED)) {
+        xive_error(xive, "VST: failed to access %s entry @0x%" PRIx64,
+                   info->name, vsd_addr);
+        return 0;
+    }
 
     if (!(vsd & VSD_ADDRESS_MASK)) {
 #ifdef XIVE_DEBUG