diff options
Diffstat (limited to 'arch/powerpc/kvm')
-rw-r--r-- | arch/powerpc/kvm/Kconfig | 1 | ||||
-rw-r--r-- | arch/powerpc/kvm/Makefile | 1 | ||||
-rw-r--r-- | arch/powerpc/kvm/book3s_64_mmu_hv.c | 10 | ||||
-rw-r--r-- | arch/powerpc/kvm/book3s_hv.c | 29 | ||||
-rw-r--r-- | arch/powerpc/kvm/book3s_hv_rm_xive.c | 1 | ||||
-rw-r--r-- | arch/powerpc/kvm/irq.h | 1 | ||||
-rw-r--r-- | arch/powerpc/kvm/trace.h | 1 | ||||
-rw-r--r-- | arch/powerpc/kvm/trace_book3s.h | 1 | ||||
-rw-r--r-- | arch/powerpc/kvm/trace_booke.h | 1 | ||||
-rw-r--r-- | arch/powerpc/kvm/trace_hv.h | 1 | ||||
-rw-r--r-- | arch/powerpc/kvm/trace_pr.h | 1 |
11 files changed, 38 insertions, 10 deletions
diff --git a/arch/powerpc/kvm/Kconfig b/arch/powerpc/kvm/Kconfig index 0c52cb5d43f5..b12b8eb39c29 100644 --- a/arch/powerpc/kvm/Kconfig +++ b/arch/powerpc/kvm/Kconfig @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0 # # KVM configuration # diff --git a/arch/powerpc/kvm/Makefile b/arch/powerpc/kvm/Makefile index 381a6ec0ff3b..85ba80de7133 100644 --- a/arch/powerpc/kvm/Makefile +++ b/arch/powerpc/kvm/Makefile @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0 # # Makefile for Kernel-based Virtual Machine module # diff --git a/arch/powerpc/kvm/book3s_64_mmu_hv.c b/arch/powerpc/kvm/book3s_64_mmu_hv.c index 7c62967d672c..59247af5fd45 100644 --- a/arch/powerpc/kvm/book3s_64_mmu_hv.c +++ b/arch/powerpc/kvm/book3s_64_mmu_hv.c @@ -646,6 +646,16 @@ int kvmppc_book3s_hv_page_fault(struct kvm_run *run, struct kvm_vcpu *vcpu, hnow_v = hpte_new_to_old_v(hnow_v, hnow_r); hnow_r = hpte_new_to_old_r(hnow_r); } + + /* + * If the HPT is being resized, don't update the HPTE, + * instead let the guest retry after the resize operation is complete. + * The synchronization for hpte_setup_done test vs. set is provided + * by the HPTE lock. + */ + if (!kvm->arch.hpte_setup_done) + goto out_unlock; + if ((hnow_v & ~HPTE_V_HVLOCK) != hpte[0] || hnow_r != hpte[1] || rev->guest_rpte != hpte[2]) /* HPTE has been changed under us; let the guest retry */ diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c index 73bf1ebfa78f..8d43cf205d34 100644 --- a/arch/powerpc/kvm/book3s_hv.c +++ b/arch/powerpc/kvm/book3s_hv.c @@ -2705,11 +2705,14 @@ static noinline void kvmppc_run_core(struct kvmppc_vcore *vc) * Hard-disable interrupts, and check resched flag and signals. * If we need to reschedule or deliver a signal, clean up * and return without going into the guest(s). + * If the hpte_setup_done flag has been cleared, don't go into the + * guest because that means a HPT resize operation is in progress. */ local_irq_disable(); hard_irq_disable(); if (lazy_irq_pending() || need_resched() || - recheck_signals(&core_info)) { + recheck_signals(&core_info) || + (!kvm_is_radix(vc->kvm) && !vc->kvm->arch.hpte_setup_done)) { local_irq_enable(); vc->vcore_state = VCORE_INACTIVE; /* Unlock all except the primary vcore */ @@ -3078,7 +3081,7 @@ out: static int kvmppc_run_vcpu(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu) { - int n_ceded, i; + int n_ceded, i, r; struct kvmppc_vcore *vc; struct kvm_vcpu *v; @@ -3132,6 +3135,20 @@ static int kvmppc_run_vcpu(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu) while (vcpu->arch.state == KVMPPC_VCPU_RUNNABLE && !signal_pending(current)) { + /* See if the HPT and VRMA are ready to go */ + if (!kvm_is_radix(vcpu->kvm) && + !vcpu->kvm->arch.hpte_setup_done) { + spin_unlock(&vc->lock); + r = kvmppc_hv_setup_htab_rma(vcpu); + spin_lock(&vc->lock); + if (r) { + kvm_run->exit_reason = KVM_EXIT_FAIL_ENTRY; + kvm_run->fail_entry.hardware_entry_failure_reason = 0; + vcpu->arch.ret = r; + break; + } + } + if (vc->vcore_state == VCORE_PREEMPT && vc->runner == NULL) kvmppc_vcore_end_preempt(vc); @@ -3249,13 +3266,6 @@ static int kvmppc_vcpu_run_hv(struct kvm_run *run, struct kvm_vcpu *vcpu) /* Order vcpus_running vs. hpte_setup_done, see kvmppc_alloc_reset_hpt */ smp_mb(); - /* On the first time here, set up HTAB and VRMA */ - if (!kvm_is_radix(vcpu->kvm) && !vcpu->kvm->arch.hpte_setup_done) { - r = kvmppc_hv_setup_htab_rma(vcpu); - if (r) - goto out; - } - flush_all_to_thread(current); /* Save userspace EBB and other register values */ @@ -3303,7 +3313,6 @@ static int kvmppc_vcpu_run_hv(struct kvm_run *run, struct kvm_vcpu *vcpu) } mtspr(SPRN_VRSAVE, user_vrsave); - out: vcpu->arch.state = KVMPPC_VCPU_NOTREADY; atomic_dec(&vcpu->kvm->arch.vcpus_running); return r; diff --git a/arch/powerpc/kvm/book3s_hv_rm_xive.c b/arch/powerpc/kvm/book3s_hv_rm_xive.c index 5b81a807d742..174d75e476fa 100644 --- a/arch/powerpc/kvm/book3s_hv_rm_xive.c +++ b/arch/powerpc/kvm/book3s_hv_rm_xive.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 #include <linux/kernel.h> #include <linux/kvm_host.h> #include <linux/err.h> diff --git a/arch/powerpc/kvm/irq.h b/arch/powerpc/kvm/irq.h index 3f1be85a83bc..e6463f866abc 100644 --- a/arch/powerpc/kvm/irq.h +++ b/arch/powerpc/kvm/irq.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ #ifndef __IRQ_H #define __IRQ_H diff --git a/arch/powerpc/kvm/trace.h b/arch/powerpc/kvm/trace.h index 2e0e67ef3544..491b0f715d6b 100644 --- a/arch/powerpc/kvm/trace.h +++ b/arch/powerpc/kvm/trace.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ #if !defined(_TRACE_KVM_H) || defined(TRACE_HEADER_MULTI_READ) #define _TRACE_KVM_H diff --git a/arch/powerpc/kvm/trace_book3s.h b/arch/powerpc/kvm/trace_book3s.h index f647ce0f428b..f3b23759e017 100644 --- a/arch/powerpc/kvm/trace_book3s.h +++ b/arch/powerpc/kvm/trace_book3s.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ #if !defined(_TRACE_KVM_BOOK3S_H) #define _TRACE_KVM_BOOK3S_H diff --git a/arch/powerpc/kvm/trace_booke.h b/arch/powerpc/kvm/trace_booke.h index 7ec534d1db9f..ac640e81fdc5 100644 --- a/arch/powerpc/kvm/trace_booke.h +++ b/arch/powerpc/kvm/trace_booke.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ #if !defined(_TRACE_KVM_BOOKE_H) || defined(TRACE_HEADER_MULTI_READ) #define _TRACE_KVM_BOOKE_H diff --git a/arch/powerpc/kvm/trace_hv.h b/arch/powerpc/kvm/trace_hv.h index ebc6dd449556..bcfe8a987f6a 100644 --- a/arch/powerpc/kvm/trace_hv.h +++ b/arch/powerpc/kvm/trace_hv.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ #if !defined(_TRACE_KVM_HV_H) || defined(TRACE_HEADER_MULTI_READ) #define _TRACE_KVM_HV_H diff --git a/arch/powerpc/kvm/trace_pr.h b/arch/powerpc/kvm/trace_pr.h index d44f324184fb..85785a370c0e 100644 --- a/arch/powerpc/kvm/trace_pr.h +++ b/arch/powerpc/kvm/trace_pr.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ #if !defined(_TRACE_KVM_PR_H) || defined(TRACE_HEADER_MULTI_READ) #define _TRACE_KVM_PR_H |