diff options
Diffstat (limited to 'arch')
-rw-r--r-- | arch/powerpc/include/asm/kvm_book3s.h | 5 | ||||
-rw-r--r-- | arch/powerpc/kvm/book3s_64_mmu_hv.c | 36 | ||||
-rw-r--r-- | arch/powerpc/kvm/book3s_hv_rm_mmu.c | 27 |
3 files changed, 45 insertions, 23 deletions
diff --git a/arch/powerpc/include/asm/kvm_book3s.h b/arch/powerpc/include/asm/kvm_book3s.h index 36fcf41..fea768f 100644 --- a/arch/powerpc/include/asm/kvm_book3s.h +++ b/arch/powerpc/include/asm/kvm_book3s.h @@ -157,8 +157,9 @@ extern void *kvmppc_pin_guest_page(struct kvm *kvm, unsigned long addr, extern void kvmppc_unpin_guest_page(struct kvm *kvm, void *addr); extern long kvmppc_virtmode_h_enter(struct kvm_vcpu *vcpu, unsigned long flags, long pte_index, unsigned long pteh, unsigned long ptel); -extern long kvmppc_h_enter(struct kvm_vcpu *vcpu, unsigned long flags, - long pte_index, unsigned long pteh, unsigned long ptel); +extern long kvmppc_do_h_enter(struct kvm *kvm, unsigned long flags, + long pte_index, unsigned long pteh, unsigned long ptel, + pgd_t *pgdir, bool realmode, unsigned long *idx_ret); extern long kvmppc_hv_get_dirty_log(struct kvm *kvm, struct kvm_memory_slot *memslot, unsigned long *map); diff --git a/arch/powerpc/kvm/book3s_64_mmu_hv.c b/arch/powerpc/kvm/book3s_64_mmu_hv.c index 2a89a36..6ee6516 100644 --- a/arch/powerpc/kvm/book3s_64_mmu_hv.c +++ b/arch/powerpc/kvm/book3s_64_mmu_hv.c @@ -41,6 +41,10 @@ /* Power architecture requires HPT is at least 256kB */ #define PPC_MIN_HPT_ORDER 18 +static long kvmppc_virtmode_do_h_enter(struct kvm *kvm, unsigned long flags, + long pte_index, unsigned long pteh, + unsigned long ptel, unsigned long *pte_idx_ret); + long kvmppc_alloc_hpt(struct kvm *kvm, u32 *htab_orderp) { unsigned long hpt; @@ -185,6 +189,7 @@ void kvmppc_map_vrma(struct kvm_vcpu *vcpu, struct kvm_memory_slot *memslot, unsigned long addr, hash; unsigned long psize; unsigned long hp0, hp1; + unsigned long idx_ret; long ret; struct kvm *kvm = vcpu->kvm; @@ -216,7 +221,8 @@ void kvmppc_map_vrma(struct kvm_vcpu *vcpu, struct kvm_memory_slot *memslot, hash = (hash << 3) + 7; hp_v = hp0 | ((addr >> 16) & ~0x7fUL); hp_r = hp1 | addr; - ret = kvmppc_virtmode_h_enter(vcpu, H_EXACT, hash, hp_v, hp_r); + ret = kvmppc_virtmode_do_h_enter(kvm, H_EXACT, hash, hp_v, hp_r, + &idx_ret); if (ret != H_SUCCESS) { pr_err("KVM: map_vrma at %lx failed, ret=%ld\n", addr, ret); @@ -354,15 +360,10 @@ static long kvmppc_get_guest_page(struct kvm *kvm, unsigned long gfn, return err; } -/* - * We come here on a H_ENTER call from the guest when we are not - * using mmu notifiers and we don't have the requested page pinned - * already. - */ -long kvmppc_virtmode_h_enter(struct kvm_vcpu *vcpu, unsigned long flags, - long pte_index, unsigned long pteh, unsigned long ptel) +long kvmppc_virtmode_do_h_enter(struct kvm *kvm, unsigned long flags, + long pte_index, unsigned long pteh, + unsigned long ptel, unsigned long *pte_idx_ret) { - struct kvm *kvm = vcpu->kvm; unsigned long psize, gpa, gfn; struct kvm_memory_slot *memslot; long ret; @@ -390,8 +391,8 @@ long kvmppc_virtmode_h_enter(struct kvm_vcpu *vcpu, unsigned long flags, do_insert: /* Protect linux PTE lookup from page table destruction */ rcu_read_lock_sched(); /* this disables preemption too */ - vcpu->arch.pgdir = current->mm->pgd; - ret = kvmppc_h_enter(vcpu, flags, pte_index, pteh, ptel); + ret = kvmppc_do_h_enter(kvm, flags, pte_index, pteh, ptel, + current->mm->pgd, false, pte_idx_ret); rcu_read_unlock_sched(); if (ret == H_TOO_HARD) { /* this can't happen */ @@ -402,6 +403,19 @@ long kvmppc_virtmode_h_enter(struct kvm_vcpu *vcpu, unsigned long flags, } +/* + * We come here on a H_ENTER call from the guest when we are not + * using mmu notifiers and we don't have the requested page pinned + * already. + */ +long kvmppc_virtmode_h_enter(struct kvm_vcpu *vcpu, unsigned long flags, + long pte_index, unsigned long pteh, + unsigned long ptel) +{ + return kvmppc_virtmode_do_h_enter(vcpu->kvm, flags, pte_index, + pteh, ptel, &vcpu->arch.gpr[4]); +} + static struct kvmppc_slb *kvmppc_mmu_book3s_hv_find_slbe(struct kvm_vcpu *vcpu, gva_t eaddr) { diff --git a/arch/powerpc/kvm/book3s_hv_rm_mmu.c b/arch/powerpc/kvm/book3s_hv_rm_mmu.c index 5e06e31..362dffe 100644 --- a/arch/powerpc/kvm/book3s_hv_rm_mmu.c +++ b/arch/powerpc/kvm/book3s_hv_rm_mmu.c @@ -103,14 +103,14 @@ static void remove_revmap_chain(struct kvm *kvm, long pte_index, unlock_rmap(rmap); } -static pte_t lookup_linux_pte(struct kvm_vcpu *vcpu, unsigned long hva, +static pte_t lookup_linux_pte(pgd_t *pgdir, unsigned long hva, int writing, unsigned long *pte_sizep) { pte_t *ptep; unsigned long ps = *pte_sizep; unsigned int shift; - ptep = find_linux_pte_or_hugepte(vcpu->arch.pgdir, hva, &shift); + ptep = find_linux_pte_or_hugepte(pgdir, hva, &shift); if (!ptep) return __pte(0); if (shift) @@ -130,10 +130,10 @@ static inline void unlock_hpte(unsigned long *hpte, unsigned long hpte_v) hpte[0] = hpte_v; } -long kvmppc_h_enter(struct kvm_vcpu *vcpu, unsigned long flags, - long pte_index, unsigned long pteh, unsigned long ptel) +long kvmppc_do_h_enter(struct kvm *kvm, unsigned long flags, + long pte_index, unsigned long pteh, unsigned long ptel, + pgd_t *pgdir, bool realmode, unsigned long *pte_idx_ret) { - struct kvm *kvm = vcpu->kvm; unsigned long i, pa, gpa, gfn, psize; unsigned long slot_fn, hva; unsigned long *hpte; @@ -147,7 +147,6 @@ long kvmppc_h_enter(struct kvm_vcpu *vcpu, unsigned long flags, unsigned int writing; unsigned long mmu_seq; unsigned long rcbits; - bool realmode = vcpu->arch.vcore->vcore_state == VCORE_RUNNING; psize = hpte_page_size(pteh, ptel); if (!psize) @@ -201,7 +200,7 @@ long kvmppc_h_enter(struct kvm_vcpu *vcpu, unsigned long flags, /* Look up the Linux PTE for the backing page */ pte_size = psize; - pte = lookup_linux_pte(vcpu, hva, writing, &pte_size); + pte = lookup_linux_pte(pgdir, hva, writing, &pte_size); if (pte_present(pte)) { if (writing && !pte_write(pte)) /* make the actual HPTE be read-only */ @@ -210,6 +209,7 @@ long kvmppc_h_enter(struct kvm_vcpu *vcpu, unsigned long flags, pa = pte_pfn(pte) << PAGE_SHIFT; } } + if (pte_size < psize) return H_PARAMETER; if (pa && pte_size > psize) @@ -297,7 +297,7 @@ long kvmppc_h_enter(struct kvm_vcpu *vcpu, unsigned long flags, lock_rmap(rmap); /* Check for pending invalidations under the rmap chain lock */ if (kvm->arch.using_mmu_notifiers && - mmu_notifier_retry(vcpu->kvm, mmu_seq)) { + mmu_notifier_retry(kvm, mmu_seq)) { /* inval in progress, write a non-present HPTE */ pteh |= HPTE_V_ABSENT; pteh &= ~HPTE_V_VALID; @@ -318,10 +318,17 @@ long kvmppc_h_enter(struct kvm_vcpu *vcpu, unsigned long flags, hpte[0] = pteh; asm volatile("ptesync" : : : "memory"); - vcpu->arch.gpr[4] = pte_index; + *pte_idx_ret = pte_index; return H_SUCCESS; } -EXPORT_SYMBOL_GPL(kvmppc_h_enter); +EXPORT_SYMBOL_GPL(kvmppc_do_h_enter); + +long kvmppc_h_enter(struct kvm_vcpu *vcpu, unsigned long flags, + long pte_index, unsigned long pteh, unsigned long ptel) +{ + return kvmppc_do_h_enter(vcpu->kvm, flags, pte_index, pteh, ptel, + vcpu->arch.pgdir, true, &vcpu->arch.gpr[4]); +} #define LOCK_TOKEN (*(u32 *)(&get_paca()->lock_token)) |