[Qemu-devel] [PATCH] ppc: Add/Re-introduce MMU model definitions needed by PR KVM

[Bharata B Rao <bharata@linux.vnet.ibm.com>]

Commit aa4bb5875231 (ppc: Add mmu_model defines for arch 2.03 and 2.07)
removed the mmu_model definition POWERPC_MMU_2_06a which is needed by
PR KVM. Reintroduce it and also add POWERPC_MMU_2_07a.

This fixes QEMU crash (qemu: fatal: Unknown MMU model) during booting
of PR KVM guest.

Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
 target-ppc/cpu.h        | 6 ++++++
 target-ppc/mmu_helper.c | 8 ++++++++
 2 files changed, 14 insertions(+)

diff --git a/target-ppc/cpu.h b/target-ppc/cpu.h
index b34aed6..31c6fee 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/mmu_helper.c b/target-ppc/mmu_helper.c
index e52d0e5..30298d8 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,
-- 
2.1.0