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Diffstat (limited to 'arch/powerpc/kvm/book3s_hv.c')
-rw-r--r--arch/powerpc/kvm/book3s_hv.c40
1 files changed, 28 insertions, 12 deletions
diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c
index 3abe1b86..83e929e 100644
--- a/arch/powerpc/kvm/book3s_hv.c
+++ b/arch/powerpc/kvm/book3s_hv.c
@@ -56,7 +56,7 @@
/* #define EXIT_DEBUG_INT */
static void kvmppc_end_cede(struct kvm_vcpu *vcpu);
-static int kvmppc_hv_setup_rma(struct kvm_vcpu *vcpu);
+static int kvmppc_hv_setup_htab_rma(struct kvm_vcpu *vcpu);
void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
{
@@ -1104,11 +1104,15 @@ int kvmppc_vcpu_run(struct kvm_run *run, struct kvm_vcpu *vcpu)
return -EINTR;
}
- /* On the first time here, set up VRMA or RMA */
+ atomic_inc(&vcpu->kvm->arch.vcpus_running);
+ /* Order vcpus_running vs. rma_setup_done, see kvmppc_alloc_reset_hpt */
+ smp_mb();
+
+ /* On the first time here, set up HTAB and VRMA or RMA */
if (!vcpu->kvm->arch.rma_setup_done) {
- r = kvmppc_hv_setup_rma(vcpu);
+ r = kvmppc_hv_setup_htab_rma(vcpu);
if (r)
- return r;
+ goto out;
}
flush_fp_to_thread(current);
@@ -1126,6 +1130,9 @@ int kvmppc_vcpu_run(struct kvm_run *run, struct kvm_vcpu *vcpu)
kvmppc_core_prepare_to_enter(vcpu);
}
} while (r == RESUME_GUEST);
+
+ out:
+ atomic_dec(&vcpu->kvm->arch.vcpus_running);
return r;
}
@@ -1341,7 +1348,7 @@ void kvmppc_core_commit_memory_region(struct kvm *kvm,
{
}
-static int kvmppc_hv_setup_rma(struct kvm_vcpu *vcpu)
+static int kvmppc_hv_setup_htab_rma(struct kvm_vcpu *vcpu)
{
int err = 0;
struct kvm *kvm = vcpu->kvm;
@@ -1360,6 +1367,15 @@ static int kvmppc_hv_setup_rma(struct kvm_vcpu *vcpu)
if (kvm->arch.rma_setup_done)
goto out; /* another vcpu beat us to it */
+ /* Allocate hashed page table (if not done already) and reset it */
+ if (!kvm->arch.hpt_virt) {
+ err = kvmppc_alloc_hpt(kvm, NULL);
+ if (err) {
+ pr_err("KVM: Couldn't alloc HPT\n");
+ goto out;
+ }
+ }
+
/* Look up the memslot for guest physical address 0 */
memslot = gfn_to_memslot(kvm, 0);
@@ -1471,13 +1487,14 @@ static int kvmppc_hv_setup_rma(struct kvm_vcpu *vcpu)
int kvmppc_core_init_vm(struct kvm *kvm)
{
- long r;
- unsigned long lpcr;
+ unsigned long lpcr, lpid;
- /* Allocate hashed page table */
- r = kvmppc_alloc_hpt(kvm);
- if (r)
- return r;
+ /* Allocate the guest's logical partition ID */
+
+ lpid = kvmppc_alloc_lpid();
+ if (lpid < 0)
+ return -ENOMEM;
+ kvm->arch.lpid = lpid;
INIT_LIST_HEAD(&kvm->arch.spapr_tce_tables);
@@ -1487,7 +1504,6 @@ int kvmppc_core_init_vm(struct kvm *kvm)
if (cpu_has_feature(CPU_FTR_ARCH_201)) {
/* PPC970; HID4 is effectively the LPCR */
- unsigned long lpid = kvm->arch.lpid;
kvm->arch.host_lpid = 0;
kvm->arch.host_lpcr = lpcr = mfspr(SPRN_HID4);
lpcr &= ~((3 << HID4_LPID1_SH) | (0xful << HID4_LPID5_SH));