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-rw-r--r--arch/powerpc/kvm/44x_tlb.c9
-rw-r--r--arch/powerpc/kvm/booke_guest.c33
-rw-r--r--arch/powerpc/kvm/emulate.c12
3 files changed, 16 insertions, 38 deletions
diff --git a/arch/powerpc/kvm/44x_tlb.c b/arch/powerpc/kvm/44x_tlb.c
index f5d7a5eab96e..75dff7cfa814 100644
--- a/arch/powerpc/kvm/44x_tlb.c
+++ b/arch/powerpc/kvm/44x_tlb.c
@@ -116,8 +116,6 @@ static void kvmppc_44x_shadow_release(struct kvm_vcpu *vcpu,
struct tlbe *stlbe = &vcpu->arch.shadow_tlb[index];
struct page *page = vcpu->arch.shadow_pages[index];
- kunmap(vcpu->arch.shadow_pages[index]);
-
if (get_tlb_v(stlbe)) {
if (kvmppc_44x_tlbe_is_writable(stlbe))
kvm_release_page_dirty(page);
@@ -144,18 +142,19 @@ void kvmppc_mmu_map(struct kvm_vcpu *vcpu, u64 gvaddr, gfn_t gfn, u64 asid,
stlbe = &vcpu->arch.shadow_tlb[victim];
/* Get reference to new page. */
- down_write(&current->mm->mmap_sem);
+ down_read(&current->mm->mmap_sem);
new_page = gfn_to_page(vcpu->kvm, gfn);
if (is_error_page(new_page)) {
- printk(KERN_ERR "Couldn't get guest page!\n");
+ printk(KERN_ERR "Couldn't get guest page for gfn %lx!\n", gfn);
kvm_release_page_clean(new_page);
+ up_read(&current->mm->mmap_sem);
return;
}
hpaddr = page_to_phys(new_page);
/* Drop reference to old page. */
kvmppc_44x_shadow_release(vcpu, victim);
- up_write(&current->mm->mmap_sem);
+ up_read(&current->mm->mmap_sem);
vcpu->arch.shadow_pages[victim] = new_page;
diff --git a/arch/powerpc/kvm/booke_guest.c b/arch/powerpc/kvm/booke_guest.c
index 712d89a28c46..9c8ad850c6e3 100644
--- a/arch/powerpc/kvm/booke_guest.c
+++ b/arch/powerpc/kvm/booke_guest.c
@@ -227,39 +227,6 @@ void kvmppc_check_and_deliver_interrupts(struct kvm_vcpu *vcpu)
}
}
-static int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu)
-{
- enum emulation_result er;
- int r;
-
- er = kvmppc_emulate_instruction(run, vcpu);
- switch (er) {
- case EMULATE_DONE:
- /* Future optimization: only reload non-volatiles if they were
- * actually modified. */
- r = RESUME_GUEST_NV;
- break;
- case EMULATE_DO_MMIO:
- run->exit_reason = KVM_EXIT_MMIO;
- /* We must reload nonvolatiles because "update" load/store
- * instructions modify register state. */
- /* Future optimization: only reload non-volatiles if they were
- * actually modified. */
- r = RESUME_HOST_NV;
- break;
- case EMULATE_FAIL:
- /* XXX Deliver Program interrupt to guest. */
- printk(KERN_EMERG "%s: emulation failed (%08x)\n", __func__,
- vcpu->arch.last_inst);
- r = RESUME_HOST;
- break;
- default:
- BUG();
- }
-
- return r;
-}
-
/**
* kvmppc_handle_exit
*
diff --git a/arch/powerpc/kvm/emulate.c b/arch/powerpc/kvm/emulate.c
index a03fe0c80698..000097461283 100644
--- a/arch/powerpc/kvm/emulate.c
+++ b/arch/powerpc/kvm/emulate.c
@@ -246,6 +246,11 @@ int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu)
case 31:
switch (get_xop(inst)) {
+ case 23: /* lwzx */
+ rt = get_rt(inst);
+ emulated = kvmppc_handle_load(run, vcpu, rt, 4, 1);
+ break;
+
case 83: /* mfmsr */
rt = get_rt(inst);
vcpu->arch.gpr[rt] = vcpu->arch.msr;
@@ -267,6 +272,13 @@ int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu)
kvmppc_set_msr(vcpu, vcpu->arch.gpr[rs]);
break;
+ case 151: /* stwx */
+ rs = get_rs(inst);
+ emulated = kvmppc_handle_store(run, vcpu,
+ vcpu->arch.gpr[rs],
+ 4, 1);
+ break;
+
case 163: /* wrteei */
vcpu->arch.msr = (vcpu->arch.msr & ~MSR_EE)
| (inst & MSR_EE);