3 files changed, 97 insertions, 64 deletions

diff --git a/arch/ia64/hp/sim/boot/boot_head.S b/arch/ia64/hp/sim/boot/boot_head.S
index 1c8c7e6a9a5e..a9bd71ac78e2 100644
--- a/arch/ia64/hp/sim/boot/boot_head.S
+++ b/arch/ia64/hp/sim/boot/boot_head.S
@@ -4,6 +4,7 @@
  */
 
 #include <asm/asmmacro.h>
+#include <asm/pal.h>
 
         .bss
         .align 16
@@ -49,7 +50,11 @@ GLOBAL_ENTRY(jmp_to_kernel)
         br.sptk.few b7
 END(jmp_to_kernel)
 
-
+/*
+ * r28 contains the index of the PAL function
+ * r29--31 the args
+ * Return values in ret0--3 (r8--11)
+ */
 GLOBAL_ENTRY(pal_emulator_static)
         mov r8=-1
         mov r9=256
@@ -62,7 +67,7 @@ GLOBAL_ENTRY(pal_emulator_static)
         cmp.gtu p6,p7=r9,r28
 (p6)    br.cond.sptk.few stacked
         ;;
-static: cmp.eq p6,p7=6,r28              /* PAL_PTCE_INFO */
+static: cmp.eq p6,p7=PAL_PTCE_INFO,r28
 (p7)    br.cond.sptk.few 1f
         ;;
         mov r8=0                        /* status = 0 */
@@ -70,21 +75,21 @@ static:	cmp.eq p6,p7=6,r28		/* PAL_PTCE_INFO */
         movl r10=0x0000000200000003     /* count[0], count[1] */
         movl r11=0x1000000000002000     /* stride[0], stride[1] */
         br.cond.sptk.few rp
-1:      cmp.eq p6,p7=14,r28             /* PAL_FREQ_RATIOS */
+1:      cmp.eq p6,p7=PAL_FREQ_RATIOS,r28
 (p7)    br.cond.sptk.few 1f
         mov r8=0                        /* status = 0 */
         movl r9 =0x100000064            /* proc_ratio (1/100) */
         movl r10=0x100000100            /* bus_ratio<<32 (1/256) */
         movl r11=0x100000064            /* itc_ratio<<32 (1/100) */
         ;;
-1:      cmp.eq p6,p7=19,r28             /* PAL_RSE_INFO */
+1:      cmp.eq p6,p7=PAL_RSE_INFO,r28
 (p7)    br.cond.sptk.few 1f
         mov r8=0                        /* status = 0 */
         mov r9=96                       /* num phys stacked */
         mov r10=0                       /* hints */
         mov r11=0
         br.cond.sptk.few rp
-1:      cmp.eq p6,p7=1,r28              /* PAL_CACHE_FLUSH */
+1:      cmp.eq p6,p7=PAL_CACHE_FLUSH,r28                /* PAL_CACHE_FLUSH */
 (p7)    br.cond.sptk.few 1f
         mov r9=ar.lc
         movl r8=524288                  /* flush 512k million cache lines (16MB) */
@@ -102,7 +107,7 @@ static:	cmp.eq p6,p7=6,r28		/* PAL_PTCE_INFO */
         mov ar.lc=r9
         mov r8=r0
         ;;
-1:      cmp.eq p6,p7=15,r28             /* PAL_PERF_MON_INFO */
+1:      cmp.eq p6,p7=PAL_PERF_MON_INFO,r28
 (p7)    br.cond.sptk.few 1f
         mov r8=0                        /* status = 0 */
         movl r9 =0x08122f04             /* generic=4 width=47 retired=8 cycles=18 */
@@ -138,6 +143,20 @@ static:	cmp.eq p6,p7=6,r28		/* PAL_PTCE_INFO */
         st8 [r29]=r0,16                 /* clear remaining bits  */
         st8 [r18]=r0,16                 /* clear remaining bits  */
         ;;
+1:      cmp.eq p6,p7=PAL_VM_SUMMARY,r28
+(p7)    br.cond.sptk.few 1f
+        mov     r8=0                    /* status = 0  */
+        movl    r9=0x2044040020F1865    /* num_tc_levels=2, num_unique_tcs=4 */
+                                        /* max_itr_entry=64, max_dtr_entry=64 */
+                                        /* hash_tag_id=2, max_pkr=15 */
+                                        /* key_size=24, phys_add_size=50, vw=1 */
+        movl    r10=0x183C              /* rid_size=24, impl_va_msb=60 */
+        ;;
+1:      cmp.eq p6,p7=PAL_MEM_ATTRIB,r28
+(p7)    br.cond.sptk.few 1f
+        mov     r8=0                    /* status = 0 */
+        mov     r9=0x80|0x01            /* NatPage|WB */
+        ;;
 1:      br.cond.sptk.few rp
 stacked:
         br.ret.sptk.few rp
diff --git a/arch/ia64/kernel/palinfo.c b/arch/ia64/kernel/palinfo.c
index 25e7c8344564..89faa603c6be 100644
--- a/arch/ia64/kernel/palinfo.c
+++ b/arch/ia64/kernel/palinfo.c
@@ -307,11 +307,9 @@ vm_info(char *page)
 
         if ((status = ia64_pal_vm_summary(&vm_info_1, &vm_info_2)) !=0) {
                 printk(KERN_ERR "ia64_pal_vm_summary=%ld\n", status);
-                return 0;
-        }
+        } else {
 
-
-        p += sprintf(p,
+                p += sprintf(p,
                      "Physical Address Space         : %d bits\n"
                      "Virtual Address Space          : %d bits\n"
                      "Protection Key Registers(PKR)  : %d\n"
@@ -319,92 +317,99 @@ vm_info(char *page)
                      "Hash Tag ID                    : 0x%x\n"
                      "Size of RR.rid                 : %d\n",
                      vm_info_1.pal_vm_info_1_s.phys_add_size,
-                     vm_info_2.pal_vm_info_2_s.impl_va_msb+1, vm_info_1.pal_vm_info_1_s.max_pkr+1,
-                     vm_info_1.pal_vm_info_1_s.key_size, vm_info_1.pal_vm_info_1_s.hash_tag_id,
+                     vm_info_2.pal_vm_info_2_s.impl_va_msb+1,
+                     vm_info_1.pal_vm_info_1_s.max_pkr+1,
+                     vm_info_1.pal_vm_info_1_s.key_size,
+                     vm_info_1.pal_vm_info_1_s.hash_tag_id,
                      vm_info_2.pal_vm_info_2_s.rid_size);
+        }
 
-        if (ia64_pal_mem_attrib(&attrib) != 0)
-                return 0;
-
-        p += sprintf(p, "Supported memory attributes    : ");
-        sep = "";
-        for (i = 0; i < 8; i++) {
-                if (attrib & (1 << i)) {
-                        p += sprintf(p, "%s%s", sep, mem_attrib[i]);
-                        sep = ", ";
+        if (ia64_pal_mem_attrib(&attrib) == 0) {
+                p += sprintf(p, "Supported memory attributes    : ");
+                sep = "";
+                for (i = 0; i < 8; i++) {
+                        if (attrib & (1 << i)) {
+                                p += sprintf(p, "%s%s", sep, mem_attrib[i]);
+                                sep = ", ";
+                        }
                 }
+                p += sprintf(p, "\n");
         }
-        p += sprintf(p, "\n");
 
         if ((status = ia64_pal_vm_page_size(&tr_pages, &vw_pages)) !=0) {
                 printk(KERN_ERR "ia64_pal_vm_page_size=%ld\n", status);
-                return 0;
-        }
-
-        p += sprintf(p,
-                     "\nTLB walker                     : %simplemented\n"
-                     "Number of DTR                  : %d\n"
-                     "Number of ITR                  : %d\n"
-                     "TLB insertable page sizes      : ",
-                     vm_info_1.pal_vm_info_1_s.vw ? "" : "not ",
-                     vm_info_1.pal_vm_info_1_s.max_dtr_entry+1,
-                     vm_info_1.pal_vm_info_1_s.max_itr_entry+1);
+        } else {
 
+                p += sprintf(p,
+                             "\nTLB walker                     : %simplemented\n"
+                             "Number of DTR                  : %d\n"
+                             "Number of ITR                  : %d\n"
+                             "TLB insertable page sizes      : ",
+                             vm_info_1.pal_vm_info_1_s.vw ? "" : "not ",
+                             vm_info_1.pal_vm_info_1_s.max_dtr_entry+1,
+                             vm_info_1.pal_vm_info_1_s.max_itr_entry+1);
 
-        p = bitvector_process(p, tr_pages);
 
-        p += sprintf(p, "\nTLB purgeable page sizes       : ");
+                p = bitvector_process(p, tr_pages);
 
-        p = bitvector_process(p, vw_pages);
+                p += sprintf(p, "\nTLB purgeable page sizes       : ");
 
+                p = bitvector_process(p, vw_pages);
+        }
         if ((status=ia64_get_ptce(&ptce)) != 0) {
                 printk(KERN_ERR "ia64_get_ptce=%ld\n", status);
-                return 0;
-        }
-
-        p += sprintf(p,
+        } else {
+                p += sprintf(p,
                      "\nPurge base address             : 0x%016lx\n"
                      "Purge outer loop count         : %d\n"
                      "Purge inner loop count         : %d\n"
                      "Purge outer loop stride        : %d\n"
                      "Purge inner loop stride        : %d\n",
-                     ptce.base, ptce.count[0], ptce.count[1], ptce.stride[0], ptce.stride[1]);
+                     ptce.base, ptce.count[0], ptce.count[1],
+                     ptce.stride[0], ptce.stride[1]);
 
-        p += sprintf(p,
+                p += sprintf(p,
                      "TC Levels                      : %d\n"
                      "Unique TC(s)                   : %d\n",
                      vm_info_1.pal_vm_info_1_s.num_tc_levels,
                      vm_info_1.pal_vm_info_1_s.max_unique_tcs);
 
-        for(i=0; i < vm_info_1.pal_vm_info_1_s.num_tc_levels; i++) {
-                for (j=2; j>0 ; j--) {
-                        tc_pages = 0; /* just in case */
+                for(i=0; i < vm_info_1.pal_vm_info_1_s.num_tc_levels; i++) {
+                        for (j=2; j>0 ; j--) {
+                                tc_pages = 0; /* just in case */
 
 
-                        /* even without unification, some levels may not be present */
-                        if ((status=ia64_pal_vm_info(i,j, &tc_info, &tc_pages)) != 0) {
-                                continue;
-                        }
+                                /* even without unification, some levels may not be present */
+                                if ((status=ia64_pal_vm_info(i,j, &tc_info, &tc_pages)) != 0) {
+                                        continue;
+                                }
 
-                        p += sprintf(p,
+                                p += sprintf(p,
                                      "\n%s Translation Cache Level %d:\n"
                                      "\tHash sets           : %d\n"
                                      "\tAssociativity       : %d\n"
                                      "\tNumber of entries   : %d\n"
                                      "\tFlags               : ",
-                                     cache_types[j+tc_info.tc_unified], i+1, tc_info.tc_num_sets,
-                                     tc_info.tc_associativity, tc_info.tc_num_entries);
+                                     cache_types[j+tc_info.tc_unified], i+1,
+                                     tc_info.tc_num_sets,
+                                     tc_info.tc_associativity,
+                                     tc_info.tc_num_entries);
 
-                        if (tc_info.tc_pf) p += sprintf(p, "PreferredPageSizeOptimized ");
-                        if (tc_info.tc_unified) p += sprintf(p, "Unified ");
-                        if (tc_info.tc_reduce_tr) p += sprintf(p, "TCReduction");
+                                if (tc_info.tc_pf)
+                                        p += sprintf(p, "PreferredPageSizeOptimized ");
+                                if (tc_info.tc_unified)
+                                        p += sprintf(p, "Unified ");
+                                if (tc_info.tc_reduce_tr)
+                                        p += sprintf(p, "TCReduction");
 
-                        p += sprintf(p, "\n\tSupported page sizes: ");
+                                p += sprintf(p, "\n\tSupported page sizes: ");
 
-                        p = bitvector_process(p, tc_pages);
+                                p = bitvector_process(p, tc_pages);
 
-                        /* when unified date (j=2) is enough */
-                        if (tc_info.tc_unified) break;
+                                /* when unified date (j=2) is enough */
+                                if (tc_info.tc_unified)
+                                        break;
+                        }
                 }
         }
         p += sprintf(p, "\n");
@@ -440,14 +445,14 @@ register_info(char *page)
                 p += sprintf(p, "\n");
         }
 
-        if (ia64_pal_rse_info(&phys_stacked, &hints) != 0) return 0;
+        if (ia64_pal_rse_info(&phys_stacked, &hints) == 0) {
 
         p += sprintf(p,
                      "RSE stacked physical registers   : %ld\n"
                      "RSE load/store hints             : %ld (%s)\n",
                      phys_stacked, hints.ph_data,
                      hints.ph_data < RSE_HINTS_COUNT ? rse_hints[hints.ph_data]: "(??)");
-
+        }
         if (ia64_pal_debug_info(&iregs, &dregs))
                 return 0;
 
diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c
index 65f9958db9f0..1281c609ee98 100644
--- a/arch/ia64/mm/init.c
+++ b/arch/ia64/mm/init.c
@@ -382,13 +382,22 @@ ia64_mmu_init (void *my_cpu_data)
 
         if (impl_va_bits < 51 || impl_va_bits > 61)
                 panic("CPU has bogus IMPL_VA_MSB value of %lu!\n", impl_va_bits - 1);
+        /*
+         * mapped_space_bits - PAGE_SHIFT is the total number of ptes we need,
+         * which must fit into "vmlpt_bits - pte_bits" slots. Second half of
+         * the test makes sure that our mapped space doesn't overlap the
+         * unimplemented hole in the middle of the region.
+         */
+        if ((mapped_space_bits - PAGE_SHIFT > vmlpt_bits - pte_bits) ||
+            (mapped_space_bits > impl_va_bits - 1))
+                panic("Cannot build a big enough virtual-linear page table"
+                      " to cover mapped address space.\n"
+                      " Try using a smaller page size.\n");
+
 
         /* place the VMLPT at the end of each page-table mapped region: */
         pta = POW2(61) - POW2(vmlpt_bits);
 
-        if (POW2(mapped_space_bits) >= pta)
-                panic("mm/init: overlap between virtually mapped linear page table and "
-                      "mapped kernel space!");
         /*
          * Set the (virtually mapped linear) page table address.  Bit
          * 8 selects between the short and long format, bits 2-7 the