From 4dc05a43506dc43ff6f70a0959fcebf0462a0639 Mon Sep 17 00:00:00 2001
From: Alexander Graf <agraf@suse.de>
Date: Mon, 2 Aug 2010 21:48:53 +0200
Subject: [PATCH] --- yaml --- r: 215831 b: refs/heads/master c:
 b9877ce2994cc812f00dbb2adb88c1749b6dac86 h: refs/heads/master i:   215829:
 a36cbf51e7d701ac974164493e498bada7bf04eb   215827:
 a4216bc74616b16db43c23e6c6649b1aaad634ef   215823:
 c726cda2c0787737be3805d833b7ea54ce6ca096 v: v3

---
 [refs]                                      |  2 +-
 trunk/arch/powerpc/kvm/book3s_32_mmu_host.c | 10 ++++++++--
 trunk/arch/powerpc/kvm/book3s_64_mmu_host.c | 11 +++++++++--
 3 files changed, 18 insertions(+), 5 deletions(-)

diff --git a/[refs] b/[refs]
index 0e4a12e7626d..13d97d665d84 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 928d78be54014e65498e289fdc3f82acc4b804a9
+refs/heads/master: b9877ce2994cc812f00dbb2adb88c1749b6dac86
diff --git a/trunk/arch/powerpc/kvm/book3s_32_mmu_host.c b/trunk/arch/powerpc/kvm/book3s_32_mmu_host.c
index 343452cff9b2..57dddeb23b9b 100644
--- a/trunk/arch/powerpc/kvm/book3s_32_mmu_host.c
+++ b/trunk/arch/powerpc/kvm/book3s_32_mmu_host.c
@@ -19,7 +19,6 @@
  */
 
 #include <linux/kvm_host.h>
-#include <linux/hash.h>
 
 #include <asm/kvm_ppc.h>
 #include <asm/kvm_book3s.h>
@@ -77,7 +76,14 @@ void kvmppc_mmu_invalidate_pte(struct kvm_vcpu *vcpu, struct hpte_cache *pte)
  * a hash, so we don't waste cycles on looping */
 static u16 kvmppc_sid_hash(struct kvm_vcpu *vcpu, u64 gvsid)
 {
-	return hash_64(gvsid, SID_MAP_BITS);
+	return (u16)(((gvsid >> (SID_MAP_BITS * 7)) & SID_MAP_MASK) ^
+		     ((gvsid >> (SID_MAP_BITS * 6)) & SID_MAP_MASK) ^
+		     ((gvsid >> (SID_MAP_BITS * 5)) & SID_MAP_MASK) ^
+		     ((gvsid >> (SID_MAP_BITS * 4)) & SID_MAP_MASK) ^
+		     ((gvsid >> (SID_MAP_BITS * 3)) & SID_MAP_MASK) ^
+		     ((gvsid >> (SID_MAP_BITS * 2)) & SID_MAP_MASK) ^
+		     ((gvsid >> (SID_MAP_BITS * 1)) & SID_MAP_MASK) ^
+		     ((gvsid >> (SID_MAP_BITS * 0)) & SID_MAP_MASK));
 }
 
 
diff --git a/trunk/arch/powerpc/kvm/book3s_64_mmu_host.c b/trunk/arch/powerpc/kvm/book3s_64_mmu_host.c
index 321c931f691c..e7c4d00b99cf 100644
--- a/trunk/arch/powerpc/kvm/book3s_64_mmu_host.c
+++ b/trunk/arch/powerpc/kvm/book3s_64_mmu_host.c
@@ -20,7 +20,6 @@
  */
 
 #include <linux/kvm_host.h>
-#include <linux/hash.h>
 
 #include <asm/kvm_ppc.h>
 #include <asm/kvm_book3s.h>
@@ -44,9 +43,17 @@ void kvmppc_mmu_invalidate_pte(struct kvm_vcpu *vcpu, struct hpte_cache *pte)
  * a hash, so we don't waste cycles on looping */
 static u16 kvmppc_sid_hash(struct kvm_vcpu *vcpu, u64 gvsid)
 {
-	return hash_64(gvsid, SID_MAP_BITS);
+	return (u16)(((gvsid >> (SID_MAP_BITS * 7)) & SID_MAP_MASK) ^
+		     ((gvsid >> (SID_MAP_BITS * 6)) & SID_MAP_MASK) ^
+		     ((gvsid >> (SID_MAP_BITS * 5)) & SID_MAP_MASK) ^
+		     ((gvsid >> (SID_MAP_BITS * 4)) & SID_MAP_MASK) ^
+		     ((gvsid >> (SID_MAP_BITS * 3)) & SID_MAP_MASK) ^
+		     ((gvsid >> (SID_MAP_BITS * 2)) & SID_MAP_MASK) ^
+		     ((gvsid >> (SID_MAP_BITS * 1)) & SID_MAP_MASK) ^
+		     ((gvsid >> (SID_MAP_BITS * 0)) & SID_MAP_MASK));
 }
 
+
 static struct kvmppc_sid_map *find_sid_vsid(struct kvm_vcpu *vcpu, u64 gvsid)
 {
 	struct kvmppc_sid_map *map;