diff options
Diffstat (limited to 'arch/powerpc/kvm/book3s_hv_rm_mmu.c')
-rw-r--r-- | arch/powerpc/kvm/book3s_hv_rm_mmu.c | 89 |
1 files changed, 55 insertions, 34 deletions
diff --git a/arch/powerpc/kvm/book3s_hv_rm_mmu.c b/arch/powerpc/kvm/book3s_hv_rm_mmu.c index 9ef3c4b..ce6f212 100644 --- a/arch/powerpc/kvm/book3s_hv_rm_mmu.c +++ b/arch/powerpc/kvm/book3s_hv_rm_mmu.c @@ -43,6 +43,7 @@ static void *real_vmalloc_addr(void *x) static int global_invalidates(struct kvm *kvm, unsigned long flags) { int global; + int cpu; /* * If there is only one vcore, and it's currently running, @@ -60,8 +61,14 @@ static int global_invalidates(struct kvm *kvm, unsigned long flags) /* any other core might now have stale TLB entries... */ smp_wmb(); cpumask_setall(&kvm->arch.need_tlb_flush); - cpumask_clear_cpu(local_paca->kvm_hstate.kvm_vcore->pcpu, - &kvm->arch.need_tlb_flush); + cpu = local_paca->kvm_hstate.kvm_vcore->pcpu; + /* + * On POWER9, threads are independent but the TLB is shared, + * so use the bit for the first thread to represent the core. + */ + if (cpu_has_feature(CPU_FTR_ARCH_300)) + cpu = cpu_first_thread_sibling(cpu); + cpumask_clear_cpu(cpu, &kvm->arch.need_tlb_flush); } return global; @@ -79,10 +86,10 @@ void kvmppc_add_revmap_chain(struct kvm *kvm, struct revmap_entry *rev, if (*rmap & KVMPPC_RMAP_PRESENT) { i = *rmap & KVMPPC_RMAP_INDEX; - head = &kvm->arch.revmap[i]; + head = &kvm->arch.hpt.rev[i]; if (realmode) head = real_vmalloc_addr(head); - tail = &kvm->arch.revmap[head->back]; + tail = &kvm->arch.hpt.rev[head->back]; if (realmode) tail = real_vmalloc_addr(tail); rev->forw = i; @@ -147,8 +154,8 @@ static void remove_revmap_chain(struct kvm *kvm, long pte_index, lock_rmap(rmap); head = *rmap & KVMPPC_RMAP_INDEX; - next = real_vmalloc_addr(&kvm->arch.revmap[rev->forw]); - prev = real_vmalloc_addr(&kvm->arch.revmap[rev->back]); + next = real_vmalloc_addr(&kvm->arch.hpt.rev[rev->forw]); + prev = real_vmalloc_addr(&kvm->arch.hpt.rev[rev->back]); next->back = rev->back; prev->forw = rev->forw; if (head == pte_index) { @@ -182,6 +189,8 @@ long kvmppc_do_h_enter(struct kvm *kvm, unsigned long flags, unsigned long mmu_seq; unsigned long rcbits, irq_flags = 0; + if (kvm_is_radix(kvm)) + return H_FUNCTION; psize = hpte_page_size(pteh, ptel); if (!psize) return H_PARAMETER; @@ -247,7 +256,7 @@ long kvmppc_do_h_enter(struct kvm *kvm, unsigned long flags, } pte = kvmppc_read_update_linux_pte(ptep, writing); if (pte_present(pte) && !pte_protnone(pte)) { - if (writing && !pte_write(pte)) + if (writing && !__pte_write(pte)) /* make the actual HPTE be read-only */ ptel = hpte_make_readonly(ptel); is_ci = pte_ci(pte); @@ -283,11 +292,11 @@ long kvmppc_do_h_enter(struct kvm *kvm, unsigned long flags, /* Find and lock the HPTEG slot to use */ do_insert: - if (pte_index >= kvm->arch.hpt_npte) + if (pte_index >= kvmppc_hpt_npte(&kvm->arch.hpt)) return H_PARAMETER; if (likely((flags & H_EXACT) == 0)) { pte_index &= ~7UL; - hpte = (__be64 *)(kvm->arch.hpt_virt + (pte_index << 4)); + hpte = (__be64 *)(kvm->arch.hpt.virt + (pte_index << 4)); for (i = 0; i < 8; ++i) { if ((be64_to_cpu(*hpte) & HPTE_V_VALID) == 0 && try_lock_hpte(hpte, HPTE_V_HVLOCK | HPTE_V_VALID | @@ -318,7 +327,7 @@ long kvmppc_do_h_enter(struct kvm *kvm, unsigned long flags, } pte_index += i; } else { - hpte = (__be64 *)(kvm->arch.hpt_virt + (pte_index << 4)); + hpte = (__be64 *)(kvm->arch.hpt.virt + (pte_index << 4)); if (!try_lock_hpte(hpte, HPTE_V_HVLOCK | HPTE_V_VALID | HPTE_V_ABSENT)) { /* Lock the slot and check again */ @@ -335,7 +344,7 @@ long kvmppc_do_h_enter(struct kvm *kvm, unsigned long flags, } /* Save away the guest's idea of the second HPTE dword */ - rev = &kvm->arch.revmap[pte_index]; + rev = &kvm->arch.hpt.rev[pte_index]; if (realmode) rev = real_vmalloc_addr(rev); if (rev) { @@ -458,9 +467,11 @@ long kvmppc_do_h_remove(struct kvm *kvm, unsigned long flags, struct revmap_entry *rev; u64 pte, orig_pte, pte_r; - if (pte_index >= kvm->arch.hpt_npte) + if (kvm_is_radix(kvm)) + return H_FUNCTION; + if (pte_index >= kvmppc_hpt_npte(&kvm->arch.hpt)) return H_PARAMETER; - hpte = (__be64 *)(kvm->arch.hpt_virt + (pte_index << 4)); + hpte = (__be64 *)(kvm->arch.hpt.virt + (pte_index << 4)); while (!try_lock_hpte(hpte, HPTE_V_HVLOCK)) cpu_relax(); pte = orig_pte = be64_to_cpu(hpte[0]); @@ -476,7 +487,7 @@ long kvmppc_do_h_remove(struct kvm *kvm, unsigned long flags, return H_NOT_FOUND; } - rev = real_vmalloc_addr(&kvm->arch.revmap[pte_index]); + rev = real_vmalloc_addr(&kvm->arch.hpt.rev[pte_index]); v = pte & ~HPTE_V_HVLOCK; if (v & HPTE_V_VALID) { hpte[0] &= ~cpu_to_be64(HPTE_V_VALID); @@ -529,6 +540,8 @@ long kvmppc_h_bulk_remove(struct kvm_vcpu *vcpu) struct revmap_entry *rev, *revs[4]; u64 hp0, hp1; + if (kvm_is_radix(kvm)) + return H_FUNCTION; global = global_invalidates(kvm, 0); for (i = 0; i < 4 && ret == H_SUCCESS; ) { n = 0; @@ -544,13 +557,13 @@ long kvmppc_h_bulk_remove(struct kvm_vcpu *vcpu) break; } if (req != 1 || flags == 3 || - pte_index >= kvm->arch.hpt_npte) { + pte_index >= kvmppc_hpt_npte(&kvm->arch.hpt)) { /* parameter error */ args[j] = ((0xa0 | flags) << 56) + pte_index; ret = H_PARAMETER; break; } - hp = (__be64 *) (kvm->arch.hpt_virt + (pte_index << 4)); + hp = (__be64 *) (kvm->arch.hpt.virt + (pte_index << 4)); /* to avoid deadlock, don't spin except for first */ if (!try_lock_hpte(hp, HPTE_V_HVLOCK)) { if (n) @@ -587,7 +600,7 @@ long kvmppc_h_bulk_remove(struct kvm_vcpu *vcpu) } args[j] = ((0x80 | flags) << 56) + pte_index; - rev = real_vmalloc_addr(&kvm->arch.revmap[pte_index]); + rev = real_vmalloc_addr(&kvm->arch.hpt.rev[pte_index]); note_hpte_modification(kvm, rev); if (!(hp0 & HPTE_V_VALID)) { @@ -642,10 +655,12 @@ long kvmppc_h_protect(struct kvm_vcpu *vcpu, unsigned long flags, unsigned long v, r, rb, mask, bits; u64 pte_v, pte_r; - if (pte_index >= kvm->arch.hpt_npte) + if (kvm_is_radix(kvm)) + return H_FUNCTION; + if (pte_index >= kvmppc_hpt_npte(&kvm->arch.hpt)) return H_PARAMETER; - hpte = (__be64 *)(kvm->arch.hpt_virt + (pte_index << 4)); + hpte = (__be64 *)(kvm->arch.hpt.virt + (pte_index << 4)); while (!try_lock_hpte(hpte, HPTE_V_HVLOCK)) cpu_relax(); v = pte_v = be64_to_cpu(hpte[0]); @@ -665,7 +680,7 @@ long kvmppc_h_protect(struct kvm_vcpu *vcpu, unsigned long flags, /* Update guest view of 2nd HPTE dword */ mask = HPTE_R_PP0 | HPTE_R_PP | HPTE_R_N | HPTE_R_KEY_HI | HPTE_R_KEY_LO; - rev = real_vmalloc_addr(&kvm->arch.revmap[pte_index]); + rev = real_vmalloc_addr(&kvm->arch.hpt.rev[pte_index]); if (rev) { r = (rev->guest_rpte & ~mask) | bits; rev->guest_rpte = r; @@ -711,15 +726,17 @@ long kvmppc_h_read(struct kvm_vcpu *vcpu, unsigned long flags, int i, n = 1; struct revmap_entry *rev = NULL; - if (pte_index >= kvm->arch.hpt_npte) + if (kvm_is_radix(kvm)) + return H_FUNCTION; + if (pte_index >= kvmppc_hpt_npte(&kvm->arch.hpt)) return H_PARAMETER; if (flags & H_READ_4) { pte_index &= ~3; n = 4; } - rev = real_vmalloc_addr(&kvm->arch.revmap[pte_index]); + rev = real_vmalloc_addr(&kvm->arch.hpt.rev[pte_index]); for (i = 0; i < n; ++i, ++pte_index) { - hpte = (__be64 *)(kvm->arch.hpt_virt + (pte_index << 4)); + hpte = (__be64 *)(kvm->arch.hpt.virt + (pte_index << 4)); v = be64_to_cpu(hpte[0]) & ~HPTE_V_HVLOCK; r = be64_to_cpu(hpte[1]); if (cpu_has_feature(CPU_FTR_ARCH_300)) { @@ -750,11 +767,13 @@ long kvmppc_h_clear_ref(struct kvm_vcpu *vcpu, unsigned long flags, unsigned long *rmap; long ret = H_NOT_FOUND; - if (pte_index >= kvm->arch.hpt_npte) + if (kvm_is_radix(kvm)) + return H_FUNCTION; + if (pte_index >= kvmppc_hpt_npte(&kvm->arch.hpt)) return H_PARAMETER; - rev = real_vmalloc_addr(&kvm->arch.revmap[pte_index]); - hpte = (__be64 *)(kvm->arch.hpt_virt + (pte_index << 4)); + rev = real_vmalloc_addr(&kvm->arch.hpt.rev[pte_index]); + hpte = (__be64 *)(kvm->arch.hpt.virt + (pte_index << 4)); while (!try_lock_hpte(hpte, HPTE_V_HVLOCK)) cpu_relax(); v = be64_to_cpu(hpte[0]); @@ -796,11 +815,13 @@ long kvmppc_h_clear_mod(struct kvm_vcpu *vcpu, unsigned long flags, unsigned long *rmap; long ret = H_NOT_FOUND; - if (pte_index >= kvm->arch.hpt_npte) + if (kvm_is_radix(kvm)) + return H_FUNCTION; + if (pte_index >= kvmppc_hpt_npte(&kvm->arch.hpt)) return H_PARAMETER; - rev = real_vmalloc_addr(&kvm->arch.revmap[pte_index]); - hpte = (__be64 *)(kvm->arch.hpt_virt + (pte_index << 4)); + rev = real_vmalloc_addr(&kvm->arch.hpt.rev[pte_index]); + hpte = (__be64 *)(kvm->arch.hpt.virt + (pte_index << 4)); while (!try_lock_hpte(hpte, HPTE_V_HVLOCK)) cpu_relax(); v = be64_to_cpu(hpte[0]); @@ -949,7 +970,7 @@ long kvmppc_hv_find_lock_hpte(struct kvm *kvm, gva_t eaddr, unsigned long slb_v, somask = (1UL << 28) - 1; vsid = (slb_v & ~SLB_VSID_B) >> SLB_VSID_SHIFT; } - hash = (vsid ^ ((eaddr & somask) >> pshift)) & kvm->arch.hpt_mask; + hash = (vsid ^ ((eaddr & somask) >> pshift)) & kvmppc_hpt_mask(&kvm->arch.hpt); avpn = slb_v & ~(somask >> 16); /* also includes B */ avpn |= (eaddr & somask) >> 16; @@ -960,7 +981,7 @@ long kvmppc_hv_find_lock_hpte(struct kvm *kvm, gva_t eaddr, unsigned long slb_v, val |= avpn; for (;;) { - hpte = (__be64 *)(kvm->arch.hpt_virt + (hash << 7)); + hpte = (__be64 *)(kvm->arch.hpt.virt + (hash << 7)); for (i = 0; i < 16; i += 2) { /* Read the PTE racily */ @@ -996,7 +1017,7 @@ long kvmppc_hv_find_lock_hpte(struct kvm *kvm, gva_t eaddr, unsigned long slb_v, if (val & HPTE_V_SECONDARY) break; val |= HPTE_V_SECONDARY; - hash = hash ^ kvm->arch.hpt_mask; + hash = hash ^ kvmppc_hpt_mask(&kvm->arch.hpt); } return -1; } @@ -1045,14 +1066,14 @@ long kvmppc_hpte_hv_fault(struct kvm_vcpu *vcpu, unsigned long addr, return status; /* there really was no HPTE */ return 0; /* for prot fault, HPTE disappeared */ } - hpte = (__be64 *)(kvm->arch.hpt_virt + (index << 4)); + hpte = (__be64 *)(kvm->arch.hpt.virt + (index << 4)); v = orig_v = be64_to_cpu(hpte[0]) & ~HPTE_V_HVLOCK; r = be64_to_cpu(hpte[1]); if (cpu_has_feature(CPU_FTR_ARCH_300)) { v = hpte_new_to_old_v(v, r); r = hpte_new_to_old_r(r); } - rev = real_vmalloc_addr(&kvm->arch.revmap[index]); + rev = real_vmalloc_addr(&kvm->arch.hpt.rev[index]); gr = rev->guest_rpte; unlock_hpte(hpte, orig_v); |