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path: root/arch/powerpc/kvm/book3s_hv.c
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Diffstat (limited to 'arch/powerpc/kvm/book3s_hv.c')
-rw-r--r--arch/powerpc/kvm/book3s_hv.c82
1 files changed, 38 insertions, 44 deletions
diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c
index 8227dba5af0f..7a12edbb61e7 100644
--- a/arch/powerpc/kvm/book3s_hv.c
+++ b/arch/powerpc/kvm/book3s_hv.c
@@ -879,24 +879,9 @@ static int kvmppc_get_one_reg_hv(struct kvm_vcpu *vcpu, u64 id,
case KVM_REG_PPC_IAMR:
*val = get_reg_val(id, vcpu->arch.iamr);
break;
- case KVM_REG_PPC_FSCR:
- *val = get_reg_val(id, vcpu->arch.fscr);
- break;
case KVM_REG_PPC_PSPB:
*val = get_reg_val(id, vcpu->arch.pspb);
break;
- case KVM_REG_PPC_EBBHR:
- *val = get_reg_val(id, vcpu->arch.ebbhr);
- break;
- case KVM_REG_PPC_EBBRR:
- *val = get_reg_val(id, vcpu->arch.ebbrr);
- break;
- case KVM_REG_PPC_BESCR:
- *val = get_reg_val(id, vcpu->arch.bescr);
- break;
- case KVM_REG_PPC_TAR:
- *val = get_reg_val(id, vcpu->arch.tar);
- break;
case KVM_REG_PPC_DPDES:
*val = get_reg_val(id, vcpu->arch.vcore->dpdes);
break;
@@ -1091,24 +1076,9 @@ static int kvmppc_set_one_reg_hv(struct kvm_vcpu *vcpu, u64 id,
case KVM_REG_PPC_IAMR:
vcpu->arch.iamr = set_reg_val(id, *val);
break;
- case KVM_REG_PPC_FSCR:
- vcpu->arch.fscr = set_reg_val(id, *val);
- break;
case KVM_REG_PPC_PSPB:
vcpu->arch.pspb = set_reg_val(id, *val);
break;
- case KVM_REG_PPC_EBBHR:
- vcpu->arch.ebbhr = set_reg_val(id, *val);
- break;
- case KVM_REG_PPC_EBBRR:
- vcpu->arch.ebbrr = set_reg_val(id, *val);
- break;
- case KVM_REG_PPC_BESCR:
- vcpu->arch.bescr = set_reg_val(id, *val);
- break;
- case KVM_REG_PPC_TAR:
- vcpu->arch.tar = set_reg_val(id, *val);
- break;
case KVM_REG_PPC_DPDES:
vcpu->arch.vcore->dpdes = set_reg_val(id, *val);
break;
@@ -1266,7 +1236,7 @@ static struct kvm_vcpu *kvmppc_core_vcpu_create_hv(struct kvm *kvm,
int core;
struct kvmppc_vcore *vcore;
- core = id / threads_per_core;
+ core = id / threads_per_subcore;
if (core >= KVM_MAX_VCORES)
goto out;
@@ -1280,6 +1250,17 @@ static struct kvm_vcpu *kvmppc_core_vcpu_create_hv(struct kvm *kvm,
goto free_vcpu;
vcpu->arch.shared = &vcpu->arch.shregs;
+#ifdef CONFIG_KVM_BOOK3S_PR_POSSIBLE
+ /*
+ * The shared struct is never shared on HV,
+ * so we can always use host endianness
+ */
+#ifdef __BIG_ENDIAN__
+ vcpu->arch.shared_big_endian = true;
+#else
+ vcpu->arch.shared_big_endian = false;
+#endif
+#endif
vcpu->arch.mmcr[0] = MMCR0_FC;
vcpu->arch.ctrl = CTRL_RUNLATCH;
/* default to host PVR, since we can't spoof it */
@@ -1305,7 +1286,7 @@ static struct kvm_vcpu *kvmppc_core_vcpu_create_hv(struct kvm *kvm,
init_waitqueue_head(&vcore->wq);
vcore->preempt_tb = TB_NIL;
vcore->lpcr = kvm->arch.lpcr;
- vcore->first_vcpuid = core * threads_per_core;
+ vcore->first_vcpuid = core * threads_per_subcore;
vcore->kvm = kvm;
}
kvm->arch.vcores[core] = vcore;
@@ -1495,16 +1476,19 @@ static void kvmppc_wait_for_nap(struct kvmppc_vcore *vc)
static int on_primary_thread(void)
{
int cpu = smp_processor_id();
- int thr = cpu_thread_in_core(cpu);
+ int thr;
- if (thr)
+ /* Are we on a primary subcore? */
+ if (cpu_thread_in_subcore(cpu))
return 0;
- while (++thr < threads_per_core)
+
+ thr = 0;
+ while (++thr < threads_per_subcore)
if (cpu_online(cpu + thr))
return 0;
/* Grab all hw threads so they can't go into the kernel */
- for (thr = 1; thr < threads_per_core; ++thr) {
+ for (thr = 1; thr < threads_per_subcore; ++thr) {
if (kvmppc_grab_hwthread(cpu + thr)) {
/* Couldn't grab one; let the others go */
do {
@@ -1563,15 +1547,18 @@ static void kvmppc_run_core(struct kvmppc_vcore *vc)
}
/*
- * Make sure we are running on thread 0, and that
- * secondary threads are offline.
+ * Make sure we are running on primary threads, and that secondary
+ * threads are offline. Also check if the number of threads in this
+ * guest are greater than the current system threads per guest.
*/
- if (threads_per_core > 1 && !on_primary_thread()) {
+ if ((threads_per_core > 1) &&
+ ((vc->num_threads > threads_per_subcore) || !on_primary_thread())) {
list_for_each_entry(vcpu, &vc->runnable_threads, arch.run_list)
vcpu->arch.ret = -EBUSY;
goto out;
}
+
vc->pcpu = smp_processor_id();
list_for_each_entry(vcpu, &vc->runnable_threads, arch.run_list) {
kvmppc_start_thread(vcpu);
@@ -1599,7 +1586,7 @@ static void kvmppc_run_core(struct kvmppc_vcore *vc)
/* wait for secondary threads to finish writing their state to memory */
if (vc->nap_count < vc->n_woken)
kvmppc_wait_for_nap(vc);
- for (i = 0; i < threads_per_core; ++i)
+ for (i = 0; i < threads_per_subcore; ++i)
kvmppc_release_hwthread(vc->pcpu + i);
/* prevent other vcpu threads from doing kvmppc_start_thread() now */
vc->vcore_state = VCORE_EXITING;
@@ -1949,6 +1936,13 @@ static void kvmppc_add_seg_page_size(struct kvm_ppc_one_seg_page_size **sps,
* support pte_enc here
*/
(*sps)->enc[0].pte_enc = def->penc[linux_psize];
+ /*
+ * Add 16MB MPSS support if host supports it
+ */
+ if (linux_psize != MMU_PAGE_16M && def->penc[MMU_PAGE_16M] != -1) {
+ (*sps)->enc[1].page_shift = 24;
+ (*sps)->enc[1].pte_enc = def->penc[MMU_PAGE_16M];
+ }
(*sps)++;
}
@@ -2317,10 +2311,10 @@ static int kvmppc_core_init_vm_hv(struct kvm *kvm)
spin_lock_init(&kvm->arch.slot_phys_lock);
/*
- * Don't allow secondary CPU threads to come online
- * while any KVM VMs exist.
+ * Track that we now have a HV mode VM active. This blocks secondary
+ * CPU threads from coming online.
*/
- inhibit_secondary_onlining();
+ kvm_hv_vm_activated();
return 0;
}
@@ -2336,7 +2330,7 @@ static void kvmppc_free_vcores(struct kvm *kvm)
static void kvmppc_core_destroy_vm_hv(struct kvm *kvm)
{
- uninhibit_secondary_onlining();
+ kvm_hv_vm_deactivated();
kvmppc_free_vcores(kvm);
if (kvm->arch.rma) {