From 3682d115eea928907fb18ea77c2aa95d2e68d749 Mon Sep 17 00:00:00 2001
From: Anton Blanchard <anton@samba.org>
Date: Fri, 14 Jun 2002 08:15:07 +1000
Subject: ppc64: updates for 2.5.21

---
 arch/ppc64/kernel/Makefile |  5 +++++
 arch/ppc64/kernel/head.S   |  2 ++
 arch/ppc64/kernel/htab.c   | 11 ++++++-----
 include/asm-ppc64/cache.h  |  3 ++-
 4 files changed, 15 insertions(+), 6 deletions(-)

diff --git a/arch/ppc64/kernel/Makefile b/arch/ppc64/kernel/Makefile
index 335e49173c75..d3021607968b 100644
--- a/arch/ppc64/kernel/Makefile
+++ b/arch/ppc64/kernel/Makefile
@@ -45,6 +45,11 @@ include $(TOPDIR)/Rules.make
 #
 
 head.o: head.S ppc_defs.h
+misc.o: misc.S ppc_defs.h
+entry.o: entry.S ppc_defs.h
+hvCall.o: hvCall.S ppc_defs.h
+pSeries_hvCall.o: pSeries_hvCall.S ppc_defs.h
+sys32.o: sys32.S ppc_defs.h
 
 ppc_defs.h: mk_defs.c ppc_defs.head \
 		$(TOPDIR)/include/asm/mmu.h \
diff --git a/arch/ppc64/kernel/head.S b/arch/ppc64/kernel/head.S
index 0d2c0b4964f8..16dce2c1085d 100644
--- a/arch/ppc64/kernel/head.S
+++ b/arch/ppc64/kernel/head.S
@@ -853,11 +853,13 @@ _GLOBAL(do_stab_bolted)
 	ld	r22,8(r21)	/* get SRR1 */
 	andi.	r22,r22,MSR_PR	/* check if from user */
 	bne+	stab_bolted_user_return  /* from user, send the error on up */
+#if 0
 	li	r3,0
 #ifdef CONFIG_XMON
 	bl	.xmon
 #endif
 1:	b	1b
+#endif
 2:
 	/* (((ea >> 28) & 0x1fff) << 15) | (ea >> 60) */
 	mfspr	r21,DAR
diff --git a/arch/ppc64/kernel/htab.c b/arch/ppc64/kernel/htab.c
index 3f4741cdb6c2..5f820365d476 100644
--- a/arch/ppc64/kernel/htab.c
+++ b/arch/ppc64/kernel/htab.c
@@ -210,7 +210,7 @@ int __hash_page(unsigned long ea, unsigned long access, unsigned long vsid,
 	 * If no pte found or not present, send the problem up to
 	 * do_page_fault
 	 */
-	if (!ptep || !pte_present(*ptep))
+	if (unlikely(!ptep || !pte_present(*ptep)))
 		return 1;
 
 	/* 
@@ -218,7 +218,7 @@ int __hash_page(unsigned long ea, unsigned long access, unsigned long vsid,
 	 * prevented then send the problem up to do_page_fault.
 	 */
 	access |= _PAGE_PRESENT;
-	if (access & ~(pte_val(*ptep)))
+	if (unlikely(access & ~(pte_val(*ptep))))
 		return 1;
 
 	/*
@@ -246,7 +246,8 @@ int __hash_page(unsigned long ea, unsigned long access, unsigned long vsid,
 #define PPC64_HWNOEXEC (1 << 2)
 
 	/* We do lazy icache flushing on POWER4 */
-	if (__is_processor(PV_POWER4) && pfn_valid(pte_pfn(new_pte))) {
+	if (unlikely(__is_processor(PV_POWER4) &&
+	    pfn_valid(pte_pfn(new_pte)))) {
 		struct page *page = pte_page(new_pte);
 
 		/* page is dirty */
@@ -262,7 +263,7 @@ int __hash_page(unsigned long ea, unsigned long access, unsigned long vsid,
 	}
 
 	/* Check if pte already has an hpte (case 2) */
-	if (pte_val(old_pte) & _PAGE_HASHPTE) {
+	if (unlikely(pte_val(old_pte) & _PAGE_HASHPTE)) {
 		/* There MIGHT be an HPTE for this pte */
 		unsigned long hash, slot, secondary;
 
@@ -282,7 +283,7 @@ int __hash_page(unsigned long ea, unsigned long access, unsigned long vsid,
 				*ptep = new_pte;
 	}
 
-	if (!(pte_val(old_pte) & _PAGE_HASHPTE)) {
+	if (likely(!(pte_val(old_pte) & _PAGE_HASHPTE))) {
 		/* XXX fix large pte flag */
 		unsigned long hash = hpt_hash(vpn, 0);
 		unsigned long hpte_group;
diff --git a/include/asm-ppc64/cache.h b/include/asm-ppc64/cache.h
index 00928de36087..e3f2b238459f 100644
--- a/include/asm-ppc64/cache.h
+++ b/include/asm-ppc64/cache.h
@@ -8,6 +8,7 @@
 #define __ARCH_PPC64_CACHE_H
 
 /* bytes per L1 cache line */
-#define L1_CACHE_BYTES	128
+#define L1_CACHE_SHIFT	7
+#define L1_CACHE_BYTES	(1 << L1_CACHE_SHIFT)
 
 #endif
-- 
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