Hello,

this patch introduces a kind of detection of PPC32 CPU type in attempt to
determine the valid kvtop()/uvtop() addresses translation method. It also
assumes that you have a quite recent 2.6 kernel, btw.

Dmitry

diff -ur .orig-crash-4.0-3.20/defs.h crash-4.0-3.20/defs.h
--- .orig-crash-4.0-3.20/defs.h	2007-02-21 23:52:01.000000000 +0300
+++ crash-4.0-3.20/defs.h	2007-02-22 16:16:41.000000000 +0300
@@ -3747,6 +3747,8 @@
 #define display_idt_table() \
         error(FATAL, "-d option is not applicable to PowerPC architecture\n")
 #define KSYMS_START (0x1)
+/* This should match PPC_FEATURE_BOOKE from include/asm-powerpc/cputable.h */
+#define CPU_BOOKE (0x00008000)
 #endif
 
 /*
diff -ur .orig-crash-4.0-3.20/ppc.c crash-4.0-3.20/ppc.c
--- .orig-crash-4.0-3.20/ppc.c	2007-02-21 23:52:01.000000000 +0300
+++ crash-4.0-3.20/ppc.c	2007-02-22 16:21:32.000000000 +0300
@@ -51,6 +51,9 @@
 void
 ppc_init(int when)
 {
+	target_uint cpu_features;
+	target_ptr cur_cpu_spec;
+
 	switch (when)
 	{
 	case PRE_SYMTAB:
@@ -140,6 +143,13 @@
 			if (THIS_KERNEL_VERSION >= LINUX(2,
6,0))
 				machdep->hz = 1000;
 		}
+		if (symbol_exists("cur_cpu_spec")) {
+			get_symbol_ptr("cur_cpu_spec", &cur_cpu_spec);
+			readmem_uint(cur_cpu_spec + MEMBER_OFFSET("cpu_spec", "cpu_user_features"), 
+				     KVADDR, &cpu_features, "cpu user features", FAULT_ON_ERROR);
+			if (cpu_features & CPU_BOOKE)
+				machdep->flags |= CPU_BOOKE;
+		}
 		machdep->section_size_bits = _SECTION_SIZE_BITS;
 		machdep->max_physmem_bits = _MAX_PHYSMEM_BITS;
 		break;
@@ -285,7 +295,11 @@
 
 	page_middle = (ulong *)pgd_pte;
 
-	page_table = page_middle + (BTOP(vaddr) & (PTRS_PER_PTE - 1));
+	if (machdep->flags & CPU_BOOKE)
+		page_table = page_middle + (BTOP(vaddr) & (PTRS_PER_PTE - 1));
+	else
+		page_table = ((page_middle & machdep->pagemask) + machdep->kvbase) +
+			(BTOP(vaddr) & (PTRS_PER_PTE-1));
 
 	if (verbose)
 		fprintf(fp, "  PMD: %lx => %lx\n",
(ulong)page_middle, 
@@ -369,7 +383,11 @@
 
 	page_middle = (ulong *)pgd_pte;
 
-	page_table = page_middle + (BTOP(kvaddr) & (PTRS_PER_PTE-1));
+	if (machdep->flags & CPU_BOOKE)
+		page_table = page_middle + (BTOP(kvaddr) & (PTRS_PER_PTE - 1));
+	else
+		page_table = ((page_middle & machdep->pagemask) + machdep->kvbase) +
+			(BTOP(kvaddr) & (PTRS_PER_PTE-1));
 
 	if (verbose)
 		fprintf(fp, "  PMD: %lx => %lx\n", (ulong)page_middle, 

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