diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/powerpc/kvm/book3s_mmu_hpte.c')
| -rw-r--r-- | ANDROID_3.4.5/arch/powerpc/kvm/book3s_mmu_hpte.c | 352 |
1 files changed, 0 insertions, 352 deletions
diff --git a/ANDROID_3.4.5/arch/powerpc/kvm/book3s_mmu_hpte.c b/ANDROID_3.4.5/arch/powerpc/kvm/book3s_mmu_hpte.c deleted file mode 100644 index 41cb0017..00000000 --- a/ANDROID_3.4.5/arch/powerpc/kvm/book3s_mmu_hpte.c +++ /dev/null @@ -1,352 +0,0 @@ -/* - * Copyright (C) 2010 SUSE Linux Products GmbH. All rights reserved. - * - * Authors: - * Alexander Graf <agraf@suse.de> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License, version 2, as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. - */ - -#include <linux/kvm_host.h> -#include <linux/hash.h> -#include <linux/slab.h> - -#include <asm/kvm_ppc.h> -#include <asm/kvm_book3s.h> -#include <asm/machdep.h> -#include <asm/mmu_context.h> -#include <asm/hw_irq.h> - -#include "trace.h" - -#define PTE_SIZE 12 - -static struct kmem_cache *hpte_cache; - -static inline u64 kvmppc_mmu_hash_pte(u64 eaddr) -{ - return hash_64(eaddr >> PTE_SIZE, HPTEG_HASH_BITS_PTE); -} - -static inline u64 kvmppc_mmu_hash_pte_long(u64 eaddr) -{ - return hash_64((eaddr & 0x0ffff000) >> PTE_SIZE, - HPTEG_HASH_BITS_PTE_LONG); -} - -static inline u64 kvmppc_mmu_hash_vpte(u64 vpage) -{ - return hash_64(vpage & 0xfffffffffULL, HPTEG_HASH_BITS_VPTE); -} - -static inline u64 kvmppc_mmu_hash_vpte_long(u64 vpage) -{ - return hash_64((vpage & 0xffffff000ULL) >> 12, - HPTEG_HASH_BITS_VPTE_LONG); -} - -void kvmppc_mmu_hpte_cache_map(struct kvm_vcpu *vcpu, struct hpte_cache *pte) -{ - u64 index; - struct kvmppc_vcpu_book3s *vcpu3s = to_book3s(vcpu); - - trace_kvm_book3s_mmu_map(pte); - - spin_lock(&vcpu3s->mmu_lock); - - /* Add to ePTE list */ - index = kvmppc_mmu_hash_pte(pte->pte.eaddr); - hlist_add_head_rcu(&pte->list_pte, &vcpu3s->hpte_hash_pte[index]); - - /* Add to ePTE_long list */ - index = kvmppc_mmu_hash_pte_long(pte->pte.eaddr); - hlist_add_head_rcu(&pte->list_pte_long, - &vcpu3s->hpte_hash_pte_long[index]); - - /* Add to vPTE list */ - index = kvmppc_mmu_hash_vpte(pte->pte.vpage); - hlist_add_head_rcu(&pte->list_vpte, &vcpu3s->hpte_hash_vpte[index]); - - /* Add to vPTE_long list */ - index = kvmppc_mmu_hash_vpte_long(pte->pte.vpage); - hlist_add_head_rcu(&pte->list_vpte_long, - &vcpu3s->hpte_hash_vpte_long[index]); - - spin_unlock(&vcpu3s->mmu_lock); -} - -static void free_pte_rcu(struct rcu_head *head) -{ - struct hpte_cache *pte = container_of(head, struct hpte_cache, rcu_head); - kmem_cache_free(hpte_cache, pte); -} - -static void invalidate_pte(struct kvm_vcpu *vcpu, struct hpte_cache *pte) -{ - struct kvmppc_vcpu_book3s *vcpu3s = to_book3s(vcpu); - - trace_kvm_book3s_mmu_invalidate(pte); - - /* Different for 32 and 64 bit */ - kvmppc_mmu_invalidate_pte(vcpu, pte); - - spin_lock(&vcpu3s->mmu_lock); - - /* pte already invalidated in between? */ - if (hlist_unhashed(&pte->list_pte)) { - spin_unlock(&vcpu3s->mmu_lock); - return; - } - - hlist_del_init_rcu(&pte->list_pte); - hlist_del_init_rcu(&pte->list_pte_long); - hlist_del_init_rcu(&pte->list_vpte); - hlist_del_init_rcu(&pte->list_vpte_long); - - if (pte->pte.may_write) - kvm_release_pfn_dirty(pte->pfn); - else - kvm_release_pfn_clean(pte->pfn); - - spin_unlock(&vcpu3s->mmu_lock); - - vcpu3s->hpte_cache_count--; - call_rcu(&pte->rcu_head, free_pte_rcu); -} - -static void kvmppc_mmu_pte_flush_all(struct kvm_vcpu *vcpu) -{ - struct kvmppc_vcpu_book3s *vcpu3s = to_book3s(vcpu); - struct hpte_cache *pte; - struct hlist_node *node; - int i; - - rcu_read_lock(); - - for (i = 0; i < HPTEG_HASH_NUM_VPTE_LONG; i++) { - struct hlist_head *list = &vcpu3s->hpte_hash_vpte_long[i]; - - hlist_for_each_entry_rcu(pte, node, list, list_vpte_long) - invalidate_pte(vcpu, pte); - } - - rcu_read_unlock(); -} - -static void kvmppc_mmu_pte_flush_page(struct kvm_vcpu *vcpu, ulong guest_ea) -{ - struct kvmppc_vcpu_book3s *vcpu3s = to_book3s(vcpu); - struct hlist_head *list; - struct hlist_node *node; - struct hpte_cache *pte; - - /* Find the list of entries in the map */ - list = &vcpu3s->hpte_hash_pte[kvmppc_mmu_hash_pte(guest_ea)]; - - rcu_read_lock(); - - /* Check the list for matching entries and invalidate */ - hlist_for_each_entry_rcu(pte, node, list, list_pte) - if ((pte->pte.eaddr & ~0xfffUL) == guest_ea) - invalidate_pte(vcpu, pte); - - rcu_read_unlock(); -} - -static void kvmppc_mmu_pte_flush_long(struct kvm_vcpu *vcpu, ulong guest_ea) -{ - struct kvmppc_vcpu_book3s *vcpu3s = to_book3s(vcpu); - struct hlist_head *list; - struct hlist_node *node; - struct hpte_cache *pte; - - /* Find the list of entries in the map */ - list = &vcpu3s->hpte_hash_pte_long[ - kvmppc_mmu_hash_pte_long(guest_ea)]; - - rcu_read_lock(); - - /* Check the list for matching entries and invalidate */ - hlist_for_each_entry_rcu(pte, node, list, list_pte_long) - if ((pte->pte.eaddr & 0x0ffff000UL) == guest_ea) - invalidate_pte(vcpu, pte); - - rcu_read_unlock(); -} - -void kvmppc_mmu_pte_flush(struct kvm_vcpu *vcpu, ulong guest_ea, ulong ea_mask) -{ - trace_kvm_book3s_mmu_flush("", vcpu, guest_ea, ea_mask); - guest_ea &= ea_mask; - - switch (ea_mask) { - case ~0xfffUL: - kvmppc_mmu_pte_flush_page(vcpu, guest_ea); - break; - case 0x0ffff000: - kvmppc_mmu_pte_flush_long(vcpu, guest_ea); - break; - case 0: - /* Doing a complete flush -> start from scratch */ - kvmppc_mmu_pte_flush_all(vcpu); - break; - default: - WARN_ON(1); - break; - } -} - -/* Flush with mask 0xfffffffff */ -static void kvmppc_mmu_pte_vflush_short(struct kvm_vcpu *vcpu, u64 guest_vp) -{ - struct kvmppc_vcpu_book3s *vcpu3s = to_book3s(vcpu); - struct hlist_head *list; - struct hlist_node *node; - struct hpte_cache *pte; - u64 vp_mask = 0xfffffffffULL; - - list = &vcpu3s->hpte_hash_vpte[kvmppc_mmu_hash_vpte(guest_vp)]; - - rcu_read_lock(); - - /* Check the list for matching entries and invalidate */ - hlist_for_each_entry_rcu(pte, node, list, list_vpte) - if ((pte->pte.vpage & vp_mask) == guest_vp) - invalidate_pte(vcpu, pte); - - rcu_read_unlock(); -} - -/* Flush with mask 0xffffff000 */ -static void kvmppc_mmu_pte_vflush_long(struct kvm_vcpu *vcpu, u64 guest_vp) -{ - struct kvmppc_vcpu_book3s *vcpu3s = to_book3s(vcpu); - struct hlist_head *list; - struct hlist_node *node; - struct hpte_cache *pte; - u64 vp_mask = 0xffffff000ULL; - - list = &vcpu3s->hpte_hash_vpte_long[ - kvmppc_mmu_hash_vpte_long(guest_vp)]; - - rcu_read_lock(); - - /* Check the list for matching entries and invalidate */ - hlist_for_each_entry_rcu(pte, node, list, list_vpte_long) - if ((pte->pte.vpage & vp_mask) == guest_vp) - invalidate_pte(vcpu, pte); - - rcu_read_unlock(); -} - -void kvmppc_mmu_pte_vflush(struct kvm_vcpu *vcpu, u64 guest_vp, u64 vp_mask) -{ - trace_kvm_book3s_mmu_flush("v", vcpu, guest_vp, vp_mask); - guest_vp &= vp_mask; - - switch(vp_mask) { - case 0xfffffffffULL: - kvmppc_mmu_pte_vflush_short(vcpu, guest_vp); - break; - case 0xffffff000ULL: - kvmppc_mmu_pte_vflush_long(vcpu, guest_vp); - break; - default: - WARN_ON(1); - return; - } -} - -void kvmppc_mmu_pte_pflush(struct kvm_vcpu *vcpu, ulong pa_start, ulong pa_end) -{ - struct kvmppc_vcpu_book3s *vcpu3s = to_book3s(vcpu); - struct hlist_node *node; - struct hpte_cache *pte; - int i; - - trace_kvm_book3s_mmu_flush("p", vcpu, pa_start, pa_end); - - rcu_read_lock(); - - for (i = 0; i < HPTEG_HASH_NUM_VPTE_LONG; i++) { - struct hlist_head *list = &vcpu3s->hpte_hash_vpte_long[i]; - - hlist_for_each_entry_rcu(pte, node, list, list_vpte_long) - if ((pte->pte.raddr >= pa_start) && - (pte->pte.raddr < pa_end)) - invalidate_pte(vcpu, pte); - } - - rcu_read_unlock(); -} - -struct hpte_cache *kvmppc_mmu_hpte_cache_next(struct kvm_vcpu *vcpu) -{ - struct kvmppc_vcpu_book3s *vcpu3s = to_book3s(vcpu); - struct hpte_cache *pte; - - pte = kmem_cache_zalloc(hpte_cache, GFP_KERNEL); - vcpu3s->hpte_cache_count++; - - if (vcpu3s->hpte_cache_count == HPTEG_CACHE_NUM) - kvmppc_mmu_pte_flush_all(vcpu); - - return pte; -} - -void kvmppc_mmu_hpte_destroy(struct kvm_vcpu *vcpu) -{ - kvmppc_mmu_pte_flush(vcpu, 0, 0); -} - -static void kvmppc_mmu_hpte_init_hash(struct hlist_head *hash_list, int len) -{ - int i; - - for (i = 0; i < len; i++) - INIT_HLIST_HEAD(&hash_list[i]); -} - -int kvmppc_mmu_hpte_init(struct kvm_vcpu *vcpu) -{ - struct kvmppc_vcpu_book3s *vcpu3s = to_book3s(vcpu); - - /* init hpte lookup hashes */ - kvmppc_mmu_hpte_init_hash(vcpu3s->hpte_hash_pte, - ARRAY_SIZE(vcpu3s->hpte_hash_pte)); - kvmppc_mmu_hpte_init_hash(vcpu3s->hpte_hash_pte_long, - ARRAY_SIZE(vcpu3s->hpte_hash_pte_long)); - kvmppc_mmu_hpte_init_hash(vcpu3s->hpte_hash_vpte, - ARRAY_SIZE(vcpu3s->hpte_hash_vpte)); - kvmppc_mmu_hpte_init_hash(vcpu3s->hpte_hash_vpte_long, - ARRAY_SIZE(vcpu3s->hpte_hash_vpte_long)); - - spin_lock_init(&vcpu3s->mmu_lock); - - return 0; -} - -int kvmppc_mmu_hpte_sysinit(void) -{ - /* init hpte slab cache */ - hpte_cache = kmem_cache_create("kvm-spt", sizeof(struct hpte_cache), - sizeof(struct hpte_cache), 0, NULL); - - return 0; -} - -void kvmppc_mmu_hpte_sysexit(void) -{ - kmem_cache_destroy(hpte_cache); -} |