Merge remote-tracking branch 'remotes/dgibson/tags/ppc-next-20151111' into staging

ppc patch queue - 2015-11-11

Highlights:
  - Updated SLOF version for "pseries machine
  - Bugfix / cleanup for KVM hash page table allocation

# gpg: Signature made Wed 11 Nov 2015 02:30:51 GMT using RSA key ID 20D9B392
# gpg: Good signature from "David Gibson <david@gibson.dropbear.id.au>"
# gpg:                 aka "David Gibson (Red Hat) <dgibson@redhat.com>"
# gpg:                 aka "David Gibson (ozlabs.org) <dgibson@ozlabs.org>"
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# Primary key fingerprint: 75F4 6586 AE61 A66C C44E  87DC 6C38 CACA 20D9 B392

* remotes/dgibson/tags/ppc-next-20151111:
  spapr: Handle failure of KVM_PPC_ALLOCATE_HTAB ioctl
  ppc: Let kvmppc_reset_htab() return 0 for !CONFIG_KVM
  pseries: Update SLOF firmware image to qemu-slof-20151103
  ppc: Add/Re-introduce MMU model definitions needed by PR KVM

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

7 files changed, 32 insertions, 6 deletions

diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
index 37d071e4d4..030ee3554a 100644
--- a/hw/ppc/spapr.c
+++ b/hw/ppc/spapr.c
@@ -1021,9 +1021,19 @@ static void spapr_alloc_htab(sPAPRMachineState *spapr)
      * RAM */
 
     shift = kvmppc_reset_htab(spapr->htab_shift);
-
-    if (shift > 0) {
-        /* Kernel handles htab, we don't need to allocate one */
+    if (shift < 0) {
+        /*
+         * For HV KVM, host kernel will return -ENOMEM when requested
+         * HTAB size can't be allocated.
+         */
+        error_setg(&error_abort, "Failed to allocate HTAB of requested size, try with smaller maxmem");
+    } else if (shift > 0) {
+        /*
+         * Kernel handles htab, we don't need to allocate one
+         *
+         * Older kernels can fall back to lower HTAB shift values,
+         * but we don't allow booting of such guests.
+         */
         if (shift != spapr->htab_shift) {
             error_setg(&error_abort, "Failed to allocate HTAB of requested size, try with smaller maxmem");
         }
@@ -1055,7 +1065,9 @@ static void spapr_reset_htab(sPAPRMachineState *spapr)
     int index;
 
     shift = kvmppc_reset_htab(spapr->htab_shift);
-    if (shift > 0) {
+    if (shift < 0) {
+        error_setg(&error_abort, "Failed to reset HTAB");
+    } else if (shift > 0) {
         if (shift != spapr->htab_shift) {
             error_setg(&error_abort, "Requested HTAB allocation failed during reset");
         }
diff --git a/pc-bios/README b/pc-bios/README
index e4154ab9f0..d260c1bbbe 100644
--- a/pc-bios/README
+++ b/pc-bios/README
@@ -17,7 +17,7 @@
 - SLOF (Slimline Open Firmware) is a free IEEE 1275 Open Firmware
   implementation for certain IBM POWER hardware.  The sources are at
   https://github.com/aik/SLOF, and the image currently in qemu is
-  built from git tag qemu-slof-20150813.
+  built from git tag qemu-slof-20151103.
 
 - sgabios (the Serial Graphics Adapter option ROM) provides a means for
   legacy x86 software to communicate with an attached serial console as
diff --git a/pc-bios/slof.bin b/pc-bios/slof.bin
index 701933f7dc..90f30996f9 100644
--- a/pc-bios/slof.bin
+++ b/pc-bios/slof.bin
diff --git a/roms/SLOF b/roms/SLOF
-Subproject 811277ac91f674a9273e2b529791e9b75350f3e
+Subproject b4c93802a5b2c72f096649c497ec9ff5708e445
diff --git a/target-ppc/cpu.h b/target-ppc/cpu.h
index b34aed6a19..31c6fee6f4 100644
--- a/target-ppc/cpu.h
+++ b/target-ppc/cpu.h
@@ -122,9 +122,15 @@ enum powerpc_mmu_t {
     /* Architecture 2.06 variant                               */
     POWERPC_MMU_2_06       = POWERPC_MMU_64 | POWERPC_MMU_1TSEG
                              | POWERPC_MMU_AMR | 0x00000003,
+    /* Architecture 2.06 "degraded" (no 1T segments)           */
+    POWERPC_MMU_2_06a      = POWERPC_MMU_64 | POWERPC_MMU_AMR
+                             | 0x00000003,
     /* Architecture 2.07 variant                               */
     POWERPC_MMU_2_07       = POWERPC_MMU_64 | POWERPC_MMU_1TSEG
                              | POWERPC_MMU_AMR | 0x00000004,
+    /* Architecture 2.07 "degraded" (no 1T segments)           */
+    POWERPC_MMU_2_07a      = POWERPC_MMU_64 | POWERPC_MMU_AMR
+                             | 0x00000004,
 #endif /* defined(TARGET_PPC64) */
 };
 
diff --git a/target-ppc/kvm_ppc.h b/target-ppc/kvm_ppc.h
index 309cbe0df1..5e1333d995 100644
--- a/target-ppc/kvm_ppc.h
+++ b/target-ppc/kvm_ppc.h
@@ -180,7 +180,7 @@ static inline int kvmppc_remove_spapr_tce(void *table, int pfd,
 
 static inline int kvmppc_reset_htab(int shift_hint)
 {
-    return -1;
+    return 0;
 }
 
 static inline uint64_t kvmppc_rma_size(uint64_t current_size,
diff --git a/target-ppc/mmu_helper.c b/target-ppc/mmu_helper.c
index e52d0e56c2..30298d8d4a 100644
--- a/target-ppc/mmu_helper.c
+++ b/target-ppc/mmu_helper.c
@@ -1295,7 +1295,9 @@ void dump_mmu(FILE *f, fprintf_function cpu_fprintf, CPUPPCState *env)
     case POWERPC_MMU_64B:
     case POWERPC_MMU_2_03:
     case POWERPC_MMU_2_06:
+    case POWERPC_MMU_2_06a:
     case POWERPC_MMU_2_07:
+    case POWERPC_MMU_2_07a:
         dump_slb(f, cpu_fprintf, env);
         break;
 #endif
@@ -1435,7 +1437,9 @@ hwaddr ppc_cpu_get_phys_page_debug(CPUState *cs, vaddr addr)
     case POWERPC_MMU_64B:
     case POWERPC_MMU_2_03:
     case POWERPC_MMU_2_06:
+    case POWERPC_MMU_2_06a:
     case POWERPC_MMU_2_07:
+    case POWERPC_MMU_2_07a:
         return ppc_hash64_get_phys_page_debug(env, addr);
 #endif
 
@@ -1939,7 +1943,9 @@ void ppc_tlb_invalidate_all(CPUPPCState *env)
     case POWERPC_MMU_64B:
     case POWERPC_MMU_2_03:
     case POWERPC_MMU_2_06:
+    case POWERPC_MMU_2_06a:
     case POWERPC_MMU_2_07:
+    case POWERPC_MMU_2_07a:
 #endif /* defined(TARGET_PPC64) */
         tlb_flush(CPU(cpu), 1);
         break;
@@ -2013,7 +2019,9 @@ void ppc_tlb_invalidate_one(CPUPPCState *env, target_ulong addr)
     case POWERPC_MMU_64B:
     case POWERPC_MMU_2_03:
     case POWERPC_MMU_2_06:
+    case POWERPC_MMU_2_06a:
     case POWERPC_MMU_2_07:
+    case POWERPC_MMU_2_07a:
         /* tlbie invalidate TLBs for all segments */
         /* XXX: given the fact that there are too many segments to invalidate,
          *      and we still don't have a tlb_flush_mask(env, n, mask) in QEMU,