diff options
| author | Alexander Graf <agraf@suse.de> | 2010-07-29 15:04:19 +0200 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2010-10-24 10:50:58 +0200 |
| commit | 2d27fc5eac0205588cb59ae138062e5e96695276 (patch) | |
| tree | e621ed3ade57faca4650d6bd46945c578362b2bb /arch/powerpc/include/asm | |
| parent | KVM: PPC: correctly check gfn_to_pfn() return value (diff) | |
| download | linux-2d27fc5eac0205588cb59ae138062e5e96695276.tar.xz linux-2d27fc5eac0205588cb59ae138062e5e96695276.zip | |
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 <agraf@suse.de>
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/powerpc/include/asm')
| -rw-r--r-- | arch/powerpc/include/asm/kvm_host.h | 4 |
1 files changed, 4 insertions, 0 deletions
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; |