ppc64: rework ppc64 hashtable management

arch/ppc64/kernel/htab.c

@@ -62,7 +62,6 @@
 HTAB htab_data = {NULL, 0, 0, 0, 0};
 
 extern unsigned long _SDR1;
-extern unsigned long klimit;
 
 #define KB (1024)
 #define MB (1024*KB)
@@ -77,10 +76,9 @@ loop_forever(void)
 
 static inline void
 create_pte_mapping(unsigned long start, unsigned long end,
-		   unsigned long mode, unsigned long mask, int large)
+		   unsigned long mode, int large)
 {
 	unsigned long addr;
-	HPTE *htab = (HPTE *)__v2a(htab_data.htab);
 	unsigned int step;
 
 	if (large)
@@ -89,14 +87,33 @@ create_pte_mapping(unsigned long start, unsigned long end,
 		step = 4*KB;
 
 	for (addr = start; addr < end; addr += step) {
+		unsigned long vpn, hash, hpteg;
 		unsigned long vsid = get_kernel_vsid(addr);
 		unsigned long va = (vsid << 28) | (addr & 0xfffffff);
+		int ret;
+
+		if (large)
+			vpn = va >> LARGE_PAGE_SHIFT;
+		else
+			vpn = va >> PAGE_SHIFT;
+
+		hash = hpt_hash(vpn, large);
+
+		hpteg = ((hash & htab_data.htab_hash_mask)*HPTES_PER_GROUP);
+
 		if (naca->platform == PLATFORM_PSERIES_LPAR)
-			pSeries_lpar_make_pte(htab, va,
-				(unsigned long)__v2a(addr), mode, mask, large);
+			ret = pSeries_lpar_hpte_insert(hpteg, va,
+				(unsigned long)__v2a(addr) >> PAGE_SHIFT,
+				0, mode, 1, large);
 		else
-			pSeries_make_pte(htab, va,
-				(unsigned long)__v2a(addr), mode, mask, large);
+			ret = pSeries_hpte_insert(hpteg, va,
+				(unsigned long)__v2a(addr) >> PAGE_SHIFT,
+				0, mode, 1, large);
+
+		if (ret == -1) {
+			ppc64_terminate_msg(0x20, "create_pte_mapping");
+			loop_forever();
+		}
 	}
 }
 
@@ -105,7 +122,7 @@ htab_initialize(void)
 {
 	unsigned long table, htab_size_bytes;
 	unsigned long pteg_count;
-	unsigned long mode_rw, mask;
+	unsigned long mode_rw;
 
 	/*
 	 * Calculate the required size of the htab.  We want the number of
@@ -146,19 +163,18 @@ htab_initialize(void)
 	}
 
 	mode_rw = _PAGE_ACCESSED | _PAGE_COHERENT | PP_RWXX;
-	mask = pteg_count-1;
 
 	/* XXX we currently map kernel text rw, should fix this */
 	if (cpu_has_largepage() && naca->physicalMemorySize > 256*MB) {
 		create_pte_mapping((unsigned long)KERNELBASE, 
-				   KERNELBASE + 256*MB, mode_rw, mask, 0);
+				   KERNELBASE + 256*MB, mode_rw, 0);
 		create_pte_mapping((unsigned long)KERNELBASE + 256*MB, 
 				   KERNELBASE + (naca->physicalMemorySize), 
-				   mode_rw, mask, 1);
+				   mode_rw, 1);
 	} else {
 		create_pte_mapping((unsigned long)KERNELBASE, 
 				   KERNELBASE+(naca->physicalMemorySize), 
-				   mode_rw, mask, 0);
+				   mode_rw, 0);
 	}
 }
 #undef KB
@@ -204,7 +220,7 @@ static inline unsigned long computeHptePP(unsigned long pte)
  * to be valid via Linux page tables, return 1. If handled return 0
  */
 int __hash_page(unsigned long ea, unsigned long access, unsigned long vsid,
-		pte_t *ptep, unsigned long trap)
+		pte_t *ptep, unsigned long trap, int local)
 {
 	unsigned long va, vpn;
 	unsigned long newpp, prpn;
@@ -212,8 +228,15 @@ int __hash_page(unsigned long ea, unsigned long access, unsigned long vsid,
 	long slot;
 	pte_t old_pte, new_pte;
 
+	/* XXX fix for large ptes */
+	int large = 0;
+
 	/* Search the Linux page table for a match with va */
 	va = (vsid << 28) | (ea & 0x0fffffff);
+
+	if (large)
+		vpn = va >> LARGE_PAGE_SHIFT;
+	else
 		vpn = va >> PAGE_SHIFT;
 
 	/*
@@ -276,16 +299,14 @@ int __hash_page(unsigned long ea, unsigned long access, unsigned long vsid,
 		/* There MIGHT be an HPTE for this pte */
 		unsigned long hash, slot, secondary;
 
-		/* XXX fix large pte flag */
-		hash = hpt_hash(vpn, 0);
+		hash = hpt_hash(vpn, large);
 		secondary = (pte_val(old_pte) & _PAGE_SECONDARY) >> 15;
 		if (secondary)
 			hash = ~hash;
 		slot = (hash & htab_data.htab_hash_mask) * HPTES_PER_GROUP;
 		slot += (pte_val(old_pte) & _PAGE_GROUP_IX) >> 12;
 
-		/* XXX fix large pte flag */
-		if (ppc_md.hpte_updatepp(slot, newpp, va, 0) == -1)
+		if (ppc_md.hpte_updatepp(slot, newpp, va, large, local) == -1)
 			pte_val(old_pte) &= ~_PAGE_HPTEFLAGS;
 		else
 			if (!pte_same(old_pte, new_pte))
@@ -293,8 +314,7 @@ int __hash_page(unsigned long ea, unsigned long access, unsigned long vsid,
 	}
 
 	if (likely(!(pte_val(old_pte) & _PAGE_HASHPTE))) {
-		/* XXX fix large pte flag */
-		unsigned long hash = hpt_hash(vpn, 0);
+		unsigned long hash = hpt_hash(vpn, large);
 		unsigned long hpte_group;
 		prpn = pte_val(old_pte) >> PTE_SHIFT;
 
@@ -309,18 +329,16 @@ int __hash_page(unsigned long ea, unsigned long access, unsigned long vsid,
 		/* copy appropriate flags from linux pte */
 		hpteflags = (pte_val(new_pte) & 0x1f8) | newpp;
 
-		/* XXX fix large pte flag */
-		slot = ppc_md.hpte_insert(hpte_group, vpn, prpn, 0,
-					  hpteflags, 0, 0);
+		slot = ppc_md.hpte_insert(hpte_group, va, prpn, 0,
+					  hpteflags, 0, large);
 
 		/* Primary is full, try the secondary */
 		if (slot == -1) {
 			pte_val(new_pte) |= 1 << 15;
 			hpte_group = ((~hash & htab_data.htab_hash_mask) *
 				      HPTES_PER_GROUP) & ~0x7UL; 
-			/* XXX fix large pte flag */
-			slot = ppc_md.hpte_insert(hpte_group, vpn, prpn,
-						  1, hpteflags, 0, 0);
+			slot = ppc_md.hpte_insert(hpte_group, va, prpn,
+						  1, hpteflags, 0, large);
 			if (slot == -1) {
 				if (mftb() & 0x1)
 					hpte_group = ((hash & htab_data.htab_hash_mask) * HPTES_PER_GROUP) & ~0x7UL;
@@ -351,6 +369,8 @@ int hash_page(unsigned long ea, unsigned long access, unsigned long trap)
 	struct mm_struct *mm;
 	pte_t *ptep;
 	int ret;
+	int user_region = 0;
+	int local = 0;
 
 	/* Check for invalid addresses. */
 	if (!IS_VALID_EA(ea))
@@ -358,6 +378,7 @@ int hash_page(unsigned long ea, unsigned long access, unsigned long trap)
 
  	switch (REGION_ID(ea)) {
 	case USER_REGION_ID:
+		user_region = 1;
 		mm = current->mm;
 		if (mm == NULL)
 			return 1;
@@ -401,8 +422,12 @@ int hash_page(unsigned long ea, unsigned long access, unsigned long trap)
 	 * from modifying entries while we search and update
 	 */
 	spin_lock(&mm->page_table_lock);
+
+	if (user_region && (mm->cpu_vm_mask == (1 << smp_processor_id())))
+		local = 1;
+
 	ptep = find_linux_pte(pgdir, ea);
-	ret = __hash_page(ea, access, vsid, ptep, trap);
+	ret = __hash_page(ea, access, vsid, ptep, trap, local);
 	spin_unlock(&mm->page_table_lock);
 
 	return ret;

arch/ppc64/kernel/pSeries_htab.c

@@ -22,46 +22,6 @@
 #include <asm/tlbflush.h>
 #include <asm/tlb.h>
 
-/*
- * Create a pte. Used during initialization only.
- * We assume the PTE will fit in the primary PTEG.
- */
-void pSeries_make_pte(HPTE *htab, unsigned long va, unsigned long pa,
-		      int mode, unsigned long hash_mask, int large)
-{
-	HPTE *hptep;
-	unsigned long hash, i;
-	unsigned long vpn;
-
-	if (large)
-		vpn = va >> LARGE_PAGE_SHIFT;
-	else
-		vpn = va >> PAGE_SHIFT;
-
-	hash = hpt_hash(vpn, large);
-
-	hptep  = htab + ((hash & hash_mask)*HPTES_PER_GROUP);
-
-	for (i = 0; i < 8; ++i, ++hptep) {
-		if (hptep->dw0.dw0.v == 0) {		/* !valid */
-			hptep->dw1.dword1 = pa | mode;
-			hptep->dw0.dword0 = 0;
-			hptep->dw0.dw0.avpn = va >> 23;
-			hptep->dw0.dw0.bolted = 1;	/* bolted */
-			if (large) {
-				hptep->dw0.dw0.l = 1;
-				hptep->dw0.dw0.avpn &= ~0x1UL;
-			}
-			hptep->dw0.dw0.v = 1;		/* make valid */
-			return;
-		}
-	}
-
-	/* We should _never_ get here and too early to call xmon. */
-	while(1)
-		;
-}
-
 #define HPTE_LOCK_BIT 3
 
 static inline void pSeries_lock_hpte(HPTE *hptep)
@@ -72,7 +32,7 @@ static inline void pSeries_lock_hpte(HPTE *hptep)
 		if (!test_and_set_bit(HPTE_LOCK_BIT, word))
 			break;
 		while(test_bit(HPTE_LOCK_BIT, word))
-			barrier();
+			cpu_relax();
 	}
 }
 
@@ -86,11 +46,10 @@ static inline void pSeries_unlock_hpte(HPTE *hptep)
 
 static spinlock_t pSeries_tlbie_lock = SPIN_LOCK_UNLOCKED;
 
-static long pSeries_hpte_insert(unsigned long hpte_group, unsigned long vpn,
+long pSeries_hpte_insert(unsigned long hpte_group, unsigned long va,
 			 unsigned long prpn, int secondary,
 			 unsigned long hpteflags, int bolted, int large)
 {
-	unsigned long avpn = vpn >> 11;
 	unsigned long arpn = physRpn_to_absRpn(prpn);
 	HPTE *hptep = htab_data.htab + hpte_group;
 	Hpte_dword0 dw0;
@@ -120,13 +79,15 @@ static long pSeries_hpte_insert(unsigned long hpte_group, unsigned long vpn,
 	lhpte.dw1.flags.flags = hpteflags;
 
 	lhpte.dw0.dword0      = 0;
-	lhpte.dw0.dw0.avpn    = avpn;
+	lhpte.dw0.dw0.avpn    = va >> 23;
 	lhpte.dw0.dw0.h       = secondary;
 	lhpte.dw0.dw0.bolted  = bolted;
 	lhpte.dw0.dw0.v       = 1;
 
-	if (large)
+	if (large) {
 		lhpte.dw0.dw0.l = 1;
+		lhpte.dw0.dw0.avpn &= ~0x1UL;
+	}
 
 	hptep->dw1.dword1 = lhpte.dw1.dword1;
 
@@ -150,17 +111,10 @@ static long pSeries_hpte_remove(unsigned long hpte_group)
 	Hpte_dword0 dw0;
 	int i;
 	int slot_offset;
-	unsigned long vsid, group, pi, pi_high;
-	unsigned long slot;
-	unsigned long flags;
-	int large;
-	unsigned long va;
 
-	/* pick a random slot to start at */
+	/* pick a random entry to start at */
 	slot_offset = mftb() & 0x7;
 
-	udbg_printf("remove_hpte in %d\n", slot_offset);
-
 	for (i = 0; i < HPTES_PER_GROUP; i++) {
 		hptep = htab_data.htab + hpte_group + slot_offset;
 		dw0 = hptep->dw0.dw0;
@@ -181,30 +135,9 @@ static long pSeries_hpte_remove(unsigned long hpte_group)
 	if (i == HPTES_PER_GROUP)
 		return -1;
 
-	large = dw0.l;
-
 	/* Invalidate the hpte. NOTE: this also unlocks it */
 	hptep->dw0.dword0 = 0;
 
-	/* Invalidate the tlb */
-	vsid = dw0.avpn >> 5;
-	slot = hptep - htab_data.htab;
-	group = slot >> 3;
-	if (dw0.h)
-		group = ~group;
-	pi = (vsid ^ group) & 0x7ff;
-	pi_high = (dw0.avpn & 0x1f) << 11;
-	pi |= pi_high;
-
-	if (large)
-		va = pi << LARGE_PAGE_SHIFT;
-	else
-		va = pi << PAGE_SHIFT;
-
-	spin_lock_irqsave(&pSeries_tlbie_lock, flags);
-	_tlbie(va, large);
-	spin_unlock_irqrestore(&pSeries_tlbie_lock, flags);
-
 	return i;
 }
 
@@ -259,41 +192,40 @@ static long pSeries_hpte_find(unsigned long vpn)
 }
 
 static long pSeries_hpte_updatepp(unsigned long slot, unsigned long newpp,
-				  unsigned long va, int large)
+				  unsigned long va, int large, int local)
 {
 	HPTE *hptep = htab_data.htab + slot;
 	Hpte_dword0 dw0;
-	unsigned long vpn, avpn;
+	unsigned long avpn = va >> 23;
 	unsigned long flags;
+	int ret = 0;
 
 	if (large)
-		vpn = va >> LARGE_PAGE_SHIFT;
-	else
-		vpn = va >> PAGE_SHIFT;
-
-	avpn = vpn >> 11;
+		avpn &= ~0x1UL;
 
 	pSeries_lock_hpte(hptep);
 
 	dw0 = hptep->dw0.dw0;
 
+	/* Even if we miss, we need to invalidate the TLB */
 	if ((dw0.avpn != avpn) || !dw0.v) {
 		pSeries_unlock_hpte(hptep);
-		udbg_printf("updatepp missed\n");
-		return -1;
-	}
-
+		ret = -1;
+	} else {
 		set_pp_bit(newpp, hptep);
-
 		pSeries_unlock_hpte(hptep);
+	}
 
 	/* Ensure it is out of the tlb too */
-	/* XXX use tlbiel where possible */
+	if (cpu_has_tlbiel() && !large && local) {
+		_tlbiel(va);
+	} else {
 		spin_lock_irqsave(&pSeries_tlbie_lock, flags);
 		_tlbie(va, large);
 		spin_unlock_irqrestore(&pSeries_tlbie_lock, flags);
+	}
 
-	return 0;
+	return ret;
 }
 
 /*
@@ -322,7 +254,6 @@ static void pSeries_hpte_updateboltedpp(unsigned long newpp, unsigned long ea)
 	set_pp_bit(newpp, hptep);
 
 	/* Ensure it is out of the tlb too */
-	/* XXX use tlbiel where possible */
 	spin_lock_irqsave(&pSeries_tlbie_lock, flags);
 	_tlbie(va, 0);
 	spin_unlock_irqrestore(&pSeries_tlbie_lock, flags);
@@ -333,28 +264,23 @@ static void pSeries_hpte_invalidate(unsigned long slot, unsigned long va,
 {
 	HPTE *hptep = htab_data.htab + slot;
 	Hpte_dword0 dw0;
-	unsigned long vpn, avpn;
+	unsigned long avpn = va >> 23;
 	unsigned long flags;
 
 	if (large)
-		vpn = va >> LARGE_PAGE_SHIFT;
-	else
-		vpn = va >> PAGE_SHIFT;
-
-	avpn = vpn >> 11;
+		avpn &= ~0x1UL;
 
 	pSeries_lock_hpte(hptep);
 
 	dw0 = hptep->dw0.dw0;
 
+	/* Even if we miss, we need to invalidate the TLB */
 	if ((dw0.avpn != avpn) || !dw0.v) {
 		pSeries_unlock_hpte(hptep);
-		udbg_printf("invalidate missed\n");
-		return;
-	}
-
+	} else {
 		/* Invalidate the hpte. NOTE: this also unlocks it */
 		hptep->dw0.dword0 = 0;
+	}
 
 	/* Invalidate the tlb */
 	if (cpu_has_tlbiel() && !large && local) {
@@ -374,6 +300,7 @@ static void pSeries_flush_hash_range(unsigned long context,
 	HPTE *hptep;
 	Hpte_dword0 dw0;
 	struct ppc64_tlb_batch *batch = &ppc64_tlb_batch[smp_processor_id()];
+
 	/* XXX fix for large ptes */
 	unsigned long large = 0;
 
@@ -399,22 +326,24 @@ static void pSeries_flush_hash_range(unsigned long context,
 		slot += (pte_val(batch->pte[i]) & _PAGE_GROUP_IX) >> 12;
 
 		hptep = htab_data.htab + slot;
-		avpn = vpn >> 11;
+
+		avpn = va >> 23;
+		if (large)
+			avpn &= ~0x1UL;
 
 		pSeries_lock_hpte(hptep);
 
 		dw0 = hptep->dw0.dw0;
 
+		/* Even if we miss, we need to invalidate the TLB */
 		if ((dw0.avpn != avpn) || !dw0.v) {
 			pSeries_unlock_hpte(hptep);
-			udbg_printf("invalidate missed\n");
-			continue;
+		} else {
+			/* Invalidate the hpte. NOTE: this also unlocks it */
+			hptep->dw0.dword0 = 0;
 		}
 
 		j++;
-
-		/* Invalidate the hpte. NOTE: this also unlocks it */
-		hptep->dw0.dword0 = 0;
 	}
 
 	if (cpu_has_tlbiel() && !large && local) {
@@ -457,7 +386,6 @@ void hpte_init_pSeries(void)
 	ppc_md.hpte_updateboltedpp = pSeries_hpte_updateboltedpp;
 	ppc_md.hpte_insert	= pSeries_hpte_insert;
 	ppc_md.hpte_remove     	= pSeries_hpte_remove;
-	ppc_md.make_pte		= pSeries_make_pte;
 
 	/* Disable TLB batching on nighthawk */
 	root = find_path_device("/");

arch/ppc64/kernel/pSeries_lpar.c

@@ -403,67 +403,11 @@ int hvc_count(int *start_termno)
 
 
 
-
-/*
- * Create a pte - LPAR .  Used during initialization only.
- * We assume the PTE will fit in the primary PTEG.
- */
-void pSeries_lpar_make_pte(HPTE *htab, unsigned long va, unsigned long pa,
-			   int mode, unsigned long hash_mask, int large)
-{
-	HPTE local_hpte;
-	unsigned long hash, slot, flags, lpar_rc, vpn;
-	unsigned long dummy1, dummy2;
-
-	if (large)
-		vpn = va >> LARGE_PAGE_SHIFT;
-	else
-		vpn = va >> PAGE_SHIFT;
-
-	hash = hpt_hash(vpn, large);
-
-	slot = ((hash & hash_mask)*HPTES_PER_GROUP);
-
-	local_hpte.dw1.dword1 = pa | mode;
-	local_hpte.dw0.dword0 = 0;
-	local_hpte.dw0.dw0.avpn = va >> 23;
-	local_hpte.dw0.dw0.bolted = 1;		/* bolted */
-	if (large) {
-		local_hpte.dw0.dw0.l = 1;	/* large page */
-		local_hpte.dw0.dw0.avpn &= ~0x1UL;
-	}
-	local_hpte.dw0.dw0.v = 1;
-
-	/* Set CEC cookie to 0                   */
-	/* Zero page = 0                         */
-	/* I-cache Invalidate = 0                */
-	/* I-cache synchronize = 0               */
-	/* Exact = 0 - modify any entry in group */
-	flags = 0;
-
-	lpar_rc =  plpar_pte_enter(flags, slot, local_hpte.dw0.dword0,
-				   local_hpte.dw1.dword1, &dummy1, &dummy2);
-
-	if (lpar_rc == H_PTEG_Full) {
-		while(1)
-			;
-	}
-
-	/*
-	 * NOTE: we explicitly do not check return status here because it is
-	 * "normal" for early boot code to map io regions for which a partition
-	 * has no access.  However, we will die if we actually fault on these
-	 * "permission denied" pages.
-	 */
-}
-
-static long pSeries_lpar_hpte_insert(unsigned long hpte_group,
-				     unsigned long vpn, unsigned long prpn,
+long pSeries_lpar_hpte_insert(unsigned long hpte_group,
+			      unsigned long va, unsigned long prpn,
 			      int secondary, unsigned long hpteflags,
 			      int bolted, int large)
 {
-	/* XXX fix for large page */
-	unsigned long avpn = vpn >> 11;
 	unsigned long arpn = physRpn_to_absRpn(prpn);
 	unsigned long lpar_rc;
 	unsigned long flags;
@@ -476,13 +420,15 @@ static long pSeries_lpar_hpte_insert(unsigned long hpte_group,
 	lhpte.dw1.flags.flags = hpteflags;
 
 	lhpte.dw0.dword0      = 0;
-	lhpte.dw0.dw0.avpn    = avpn;
+	lhpte.dw0.dw0.avpn    = va >> 23;
 	lhpte.dw0.dw0.h       = secondary;
 	lhpte.dw0.dw0.bolted  = bolted;
 	lhpte.dw0.dw0.v       = 1;
 
-	if (large)
+	if (large) {
 		lhpte.dw0.dw0.l = 1;
+		lhpte.dw0.dw0.avpn &= ~0x1UL;
+	}
 
 	/* Now fill in the actual HPTE */
 	/* Set CEC cookie to 0         */
@@ -559,12 +505,15 @@ static long pSeries_lpar_hpte_remove(unsigned long hpte_group)
  * already zero.  For now I am paranoid.
  */
 static long pSeries_lpar_hpte_updatepp(unsigned long slot, unsigned long newpp,
-				       unsigned long va, int large)
+				       unsigned long va, int large, int local)
 {
 	unsigned long lpar_rc;
 	unsigned long flags = (newpp & 7) | H_AVPN;
 	unsigned long avpn = va >> 23;
 
+	if (large)
+		avpn &= ~0x1UL;
+
 	lpar_rc = plpar_pte_protect(flags, slot, (avpn << 7));
 
 	if (lpar_rc == H_Not_Found) {
@@ -662,6 +611,9 @@ static void pSeries_lpar_hpte_invalidate(unsigned long slot, unsigned long va,
 	unsigned long lpar_rc;
 	unsigned long dummy1, dummy2;
 
+	if (large)
+		avpn &= ~0x1UL;
+
 	lpar_rc = plpar_pte_remove(H_AVPN, slot, (avpn << 7), &dummy1,
 				   &dummy2);
 
@@ -700,6 +652,5 @@ void pSeries_lpar_mm_init(void)
 	ppc_md.hpte_updateboltedpp = pSeries_lpar_hpte_updateboltedpp;
 	ppc_md.hpte_insert	= pSeries_lpar_hpte_insert;
 	ppc_md.hpte_remove	= pSeries_lpar_hpte_remove;
-	ppc_md.make_pte		= pSeries_lpar_make_pte;
 	ppc_md.flush_hash_range	= pSeries_lpar_flush_hash_range;
 }

arch/ppc64/mm/init.c

@@ -220,16 +220,26 @@ static void map_io_page(unsigned long ea, unsigned long pa, int flags)
 		set_pte(ptep, pfn_pte(pa >> PAGE_SHIFT, __pgprot(flags)));
 		spin_unlock(&ioremap_mm.page_table_lock);
 	} else {
-		/* If the mm subsystem is not fully up, we cannot create a
+		unsigned long va, vpn, hash, hpteg;
+
+		/*
+		 * If the mm subsystem is not fully up, we cannot create a
 		 * linux page table entry for this mapping.  Simply bolt an
 		 * entry in the hardware page table. 
 		 */
 		vsid = get_kernel_vsid(ea);
-		ppc_md.make_pte(htab_data.htab,
-			(vsid << 28) | (ea & 0xFFFFFFF), // va (NOT the ea)
-			pa, 
-			_PAGE_NO_CACHE | _PAGE_GUARDED | PP_RWXX,
-			htab_data.htab_hash_mask, 0);
+		va = (vsid << 28) | (ea & 0xFFFFFFF);
+		vpn = va >> PAGE_SHIFT;
+
+		hash = hpt_hash(vpn, 0);
+
+		hpteg = ((hash & htab_data.htab_hash_mask)*HPTES_PER_GROUP);
+
+		if (ppc_md.hpte_insert(hpteg, va, pa >> PAGE_SHIFT, 0,
+				       _PAGE_NO_CACHE|_PAGE_GUARDED|PP_RWXX,
+				       1, 0) == -1) {
+			panic("map_io_page: could not insert mapping");
+		}
 	}
 }
 
@@ -649,7 +659,7 @@ void flush_icache_user_range(struct vm_area_struct *vma, struct page *page,
 
 extern pte_t *find_linux_pte(pgd_t *pgdir, unsigned long ea);
 int __hash_page(unsigned long ea, unsigned long access, unsigned long vsid,
-		pte_t *ptep, unsigned long trap);
+		pte_t *ptep, unsigned long trap, int local);
 
 /*
  * This is called at the end of handling a user page fault, when the
@@ -665,6 +675,7 @@ void update_mmu_cache(struct vm_area_struct *vma, unsigned long ea,
 	unsigned long vsid;
 	void *pgdir;
 	pte_t *ptep;
+	int local = 0;
 
 	/* We only want HPTEs for linux PTEs that have _PAGE_ACCESSED set */
 	if (!pte_young(pte))
@@ -677,6 +688,9 @@ void update_mmu_cache(struct vm_area_struct *vma, unsigned long ea,
 	ptep = find_linux_pte(pgdir, ea);
 	vsid = get_vsid(vma->vm_mm->context, ea);
 
+	if (vma->vm_mm->cpu_vm_mask == (1 << smp_processor_id()))
+		local = 1;
+
 	__hash_page(ea, pte_val(pte) & (_PAGE_USER|_PAGE_RW), vsid, ptep,
-		    0x300);
+		    0x300, local);
 }

include/asm-ppc64/machdep.h

@@ -37,11 +37,12 @@ struct machdep_calls {
 	long		(*hpte_updatepp)(unsigned long slot, 
 					 unsigned long newpp, 
 					 unsigned long va,
-					 int large);
+					 int large,
+					 int local);
 	void            (*hpte_updateboltedpp)(unsigned long newpp, 
 					       unsigned long ea);
 	long		(*hpte_insert)(unsigned long hpte_group,
-				       unsigned long vpn,
+				       unsigned long va,
 				       unsigned long prpn,
 				       int secondary, 
 				       unsigned long hpteflags, 
@@ -51,11 +52,6 @@ struct machdep_calls {
 	void		(*flush_hash_range)(unsigned long context,
 					    unsigned long number,
 					    int local);
-	void		(*make_pte)(void *htab, unsigned long va,
-				    unsigned long pa,
-				    int mode,
-				    unsigned long hash_mask,
-				    int large);
 
 	void		(*tce_build)(struct TceTable * tbl,
 				     long tcenum,