From 2d27fc5eac0205588cb59ae138062e5e96695276 Mon Sep 17 00:00:00 2001 From: Alexander Graf Date: Thu, 29 Jul 2010 15:04:19 +0200 Subject: KVM: PPC: Add book3s_32 tlbie flush acceleration On Book3s_32 the tlbie instruction flushed effective addresses by the mask 0x0ffff000. This is pretty hard to reflect with a hash that hashes ~0xfff, so to speed up that target we should also keep a special hash around for it. Signed-off-by: Alexander Graf Signed-off-by: Avi Kivity --- arch/powerpc/include/asm/kvm_host.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'arch/powerpc/include') diff --git a/arch/powerpc/include/asm/kvm_host.h b/arch/powerpc/include/asm/kvm_host.h index fafc71aa3343..bba3b9b72a39 100644 --- a/arch/powerpc/include/asm/kvm_host.h +++ b/arch/powerpc/include/asm/kvm_host.h @@ -42,9 +42,11 @@ #define HPTEG_CACHE_NUM (1 << 15) #define HPTEG_HASH_BITS_PTE 13 +#define HPTEG_HASH_BITS_PTE_LONG 12 #define HPTEG_HASH_BITS_VPTE 13 #define HPTEG_HASH_BITS_VPTE_LONG 5 #define HPTEG_HASH_NUM_PTE (1 << HPTEG_HASH_BITS_PTE) +#define HPTEG_HASH_NUM_PTE_LONG (1 << HPTEG_HASH_BITS_PTE_LONG) #define HPTEG_HASH_NUM_VPTE (1 << HPTEG_HASH_BITS_VPTE) #define HPTEG_HASH_NUM_VPTE_LONG (1 << HPTEG_HASH_BITS_VPTE_LONG) @@ -163,6 +165,7 @@ struct kvmppc_mmu { struct hpte_cache { struct hlist_node list_pte; + struct hlist_node list_pte_long; struct hlist_node list_vpte; struct hlist_node list_vpte_long; struct rcu_head rcu_head; @@ -293,6 +296,7 @@ struct kvm_vcpu_arch { #ifdef CONFIG_PPC_BOOK3S struct hlist_head hpte_hash_pte[HPTEG_HASH_NUM_PTE]; + struct hlist_head hpte_hash_pte_long[HPTEG_HASH_NUM_PTE_LONG]; struct hlist_head hpte_hash_vpte[HPTEG_HASH_NUM_VPTE]; struct hlist_head hpte_hash_vpte_long[HPTEG_HASH_NUM_VPTE_LONG]; int hpte_cache_count; -- cgit v1.2.3