Pull sim-fixes into release branch

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 1c8c7e6a9a5eca..a9bd71ac78e2de 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 25e7c834456402..89faa603c6be23 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 65f9958db9f033..1281c609ee98b2 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