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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.c104
1 files changed, 85 insertions, 19 deletions
diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c
index 71d0c90b62b..9de24f8e03c 100644
--- a/arch/powerpc/kvm/book3s_hv.c
+++ b/arch/powerpc/kvm/book3s_hv.c
@@ -66,6 +66,31 @@
static void kvmppc_end_cede(struct kvm_vcpu *vcpu);
static int kvmppc_hv_setup_htab_rma(struct kvm_vcpu *vcpu);
+void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu)
+{
+ int me;
+ int cpu = vcpu->cpu;
+ wait_queue_head_t *wqp;
+
+ wqp = kvm_arch_vcpu_wq(vcpu);
+ if (waitqueue_active(wqp)) {
+ wake_up_interruptible(wqp);
+ ++vcpu->stat.halt_wakeup;
+ }
+
+ me = get_cpu();
+
+ /* CPU points to the first thread of the core */
+ if (cpu != me && cpu >= 0 && cpu < nr_cpu_ids) {
+ int real_cpu = cpu + vcpu->arch.ptid;
+ if (paca[real_cpu].kvm_hstate.xics_phys)
+ xics_wake_cpu(real_cpu);
+ else if (cpu_online(cpu))
+ smp_send_reschedule(cpu);
+ }
+ put_cpu();
+}
+
/*
* We use the vcpu_load/put functions to measure stolen time.
* Stolen time is counted as time when either the vcpu is able to
@@ -259,7 +284,7 @@ static unsigned long do_h_register_vpa(struct kvm_vcpu *vcpu,
len = ((struct reg_vpa *)va)->length.hword;
else
len = ((struct reg_vpa *)va)->length.word;
- kvmppc_unpin_guest_page(kvm, va);
+ kvmppc_unpin_guest_page(kvm, va, vpa, false);
/* Check length */
if (len > nb || len < sizeof(struct reg_vpa))
@@ -359,13 +384,13 @@ static void kvmppc_update_vpa(struct kvm_vcpu *vcpu, struct kvmppc_vpa *vpap)
va = NULL;
nb = 0;
if (gpa)
- va = kvmppc_pin_guest_page(kvm, vpap->next_gpa, &nb);
+ va = kvmppc_pin_guest_page(kvm, gpa, &nb);
spin_lock(&vcpu->arch.vpa_update_lock);
if (gpa == vpap->next_gpa)
break;
/* sigh... unpin that one and try again */
if (va)
- kvmppc_unpin_guest_page(kvm, va);
+ kvmppc_unpin_guest_page(kvm, va, gpa, false);
}
vpap->update_pending = 0;
@@ -375,12 +400,15 @@ static void kvmppc_update_vpa(struct kvm_vcpu *vcpu, struct kvmppc_vpa *vpap)
* has changed the mappings underlying guest memory,
* so unregister the region.
*/
- kvmppc_unpin_guest_page(kvm, va);
+ kvmppc_unpin_guest_page(kvm, va, gpa, false);
va = NULL;
}
if (vpap->pinned_addr)
- kvmppc_unpin_guest_page(kvm, vpap->pinned_addr);
+ kvmppc_unpin_guest_page(kvm, vpap->pinned_addr, vpap->gpa,
+ vpap->dirty);
+ vpap->gpa = gpa;
vpap->pinned_addr = va;
+ vpap->dirty = false;
if (va)
vpap->pinned_end = va + vpap->len;
}
@@ -472,6 +500,7 @@ static void kvmppc_create_dtl_entry(struct kvm_vcpu *vcpu,
/* order writing *dt vs. writing vpa->dtl_idx */
smp_wmb();
vpa->dtl_idx = ++vcpu->arch.dtl_index;
+ vcpu->arch.dtl.dirty = true;
}
int kvmppc_pseries_do_hcall(struct kvm_vcpu *vcpu)
@@ -479,7 +508,7 @@ int kvmppc_pseries_do_hcall(struct kvm_vcpu *vcpu)
unsigned long req = kvmppc_get_gpr(vcpu, 3);
unsigned long target, ret = H_SUCCESS;
struct kvm_vcpu *tvcpu;
- int idx;
+ int idx, rc;
switch (req) {
case H_ENTER:
@@ -515,6 +544,28 @@ int kvmppc_pseries_do_hcall(struct kvm_vcpu *vcpu)
kvmppc_get_gpr(vcpu, 5),
kvmppc_get_gpr(vcpu, 6));
break;
+ case H_RTAS:
+ if (list_empty(&vcpu->kvm->arch.rtas_tokens))
+ return RESUME_HOST;
+
+ rc = kvmppc_rtas_hcall(vcpu);
+
+ if (rc == -ENOENT)
+ return RESUME_HOST;
+ else if (rc == 0)
+ break;
+
+ /* Send the error out to userspace via KVM_RUN */
+ return rc;
+
+ case H_XIRR:
+ case H_CPPR:
+ case H_EOI:
+ case H_IPI:
+ if (kvmppc_xics_enabled(vcpu)) {
+ ret = kvmppc_xics_hcall(vcpu, req);
+ break;
+ } /* fallthrough */
default:
return RESUME_HOST;
}
@@ -913,15 +964,19 @@ out:
return ERR_PTR(err);
}
+static void unpin_vpa(struct kvm *kvm, struct kvmppc_vpa *vpa)
+{
+ if (vpa->pinned_addr)
+ kvmppc_unpin_guest_page(kvm, vpa->pinned_addr, vpa->gpa,
+ vpa->dirty);
+}
+
void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu)
{
spin_lock(&vcpu->arch.vpa_update_lock);
- if (vcpu->arch.dtl.pinned_addr)
- kvmppc_unpin_guest_page(vcpu->kvm, vcpu->arch.dtl.pinned_addr);
- if (vcpu->arch.slb_shadow.pinned_addr)
- kvmppc_unpin_guest_page(vcpu->kvm, vcpu->arch.slb_shadow.pinned_addr);
- if (vcpu->arch.vpa.pinned_addr)
- kvmppc_unpin_guest_page(vcpu->kvm, vcpu->arch.vpa.pinned_addr);
+ unpin_vpa(vcpu->kvm, &vcpu->arch.dtl);
+ unpin_vpa(vcpu->kvm, &vcpu->arch.slb_shadow);
+ unpin_vpa(vcpu->kvm, &vcpu->arch.vpa);
spin_unlock(&vcpu->arch.vpa_update_lock);
kvm_vcpu_uninit(vcpu);
kmem_cache_free(kvm_vcpu_cache, vcpu);
@@ -955,7 +1010,6 @@ static void kvmppc_end_cede(struct kvm_vcpu *vcpu)
}
extern int __kvmppc_vcore_entry(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu);
-extern void xics_wake_cpu(int cpu);
static void kvmppc_remove_runnable(struct kvmppc_vcore *vc,
struct kvm_vcpu *vcpu)
@@ -1330,9 +1384,12 @@ static int kvmppc_run_vcpu(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
break;
vc->runner = vcpu;
n_ceded = 0;
- list_for_each_entry(v, &vc->runnable_threads, arch.run_list)
+ list_for_each_entry(v, &vc->runnable_threads, arch.run_list) {
if (!v->arch.pending_exceptions)
n_ceded += v->arch.ceded;
+ else
+ v->arch.ceded = 0;
+ }
if (n_ceded == vc->n_runnable)
kvmppc_vcore_blocked(vc);
else
@@ -1483,7 +1540,7 @@ static int kvm_rma_release(struct inode *inode, struct file *filp)
return 0;
}
-static struct file_operations kvm_rma_fops = {
+static const struct file_operations kvm_rma_fops = {
.mmap = kvm_rma_mmap,
.release = kvm_rma_release,
};
@@ -1515,7 +1572,13 @@ static void kvmppc_add_seg_page_size(struct kvm_ppc_one_seg_page_size **sps,
(*sps)->page_shift = def->shift;
(*sps)->slb_enc = def->sllp;
(*sps)->enc[0].page_shift = def->shift;
- (*sps)->enc[0].pte_enc = def->penc;
+ /*
+ * Only return base page encoding. We don't want to return
+ * all the supporting pte_enc, because our H_ENTER doesn't
+ * support MPSS yet. Once they do, we can start passing all
+ * support pte_enc here
+ */
+ (*sps)->enc[0].pte_enc = def->penc[linux_psize];
(*sps)++;
}
@@ -1549,7 +1612,7 @@ int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, struct kvm_dirty_log *log)
mutex_lock(&kvm->slots_lock);
r = -EINVAL;
- if (log->slot >= KVM_MEMORY_SLOTS)
+ if (log->slot >= KVM_USER_MEM_SLOTS)
goto out;
memslot = id_to_memslot(kvm->memslots, log->slot);
@@ -1639,12 +1702,12 @@ int kvmppc_core_prepare_memory_region(struct kvm *kvm,
void kvmppc_core_commit_memory_region(struct kvm *kvm,
struct kvm_userspace_memory_region *mem,
- struct kvm_memory_slot old)
+ const struct kvm_memory_slot *old)
{
unsigned long npages = mem->memory_size >> PAGE_SHIFT;
struct kvm_memory_slot *memslot;
- if (npages && old.npages) {
+ if (npages && old->npages) {
/*
* If modifying a memslot, reset all the rmap dirty bits.
* If this is a new memslot, we don't need to do anything
@@ -1821,6 +1884,7 @@ int kvmppc_core_init_vm(struct kvm *kvm)
cpumask_setall(&kvm->arch.need_tlb_flush);
INIT_LIST_HEAD(&kvm->arch.spapr_tce_tables);
+ INIT_LIST_HEAD(&kvm->arch.rtas_tokens);
kvm->arch.rma = NULL;
@@ -1866,6 +1930,8 @@ void kvmppc_core_destroy_vm(struct kvm *kvm)
kvm->arch.rma = NULL;
}
+ kvmppc_rtas_tokens_free(kvm);
+
kvmppc_free_hpt(kvm);
WARN_ON(!list_empty(&kvm->arch.spapr_tce_tables));
}
generated by cgit v1.2.3-70-g09d2 (git 2.51.2) at 2025-11-04 07:29:02 +0000