diff options
author | David Woodhouse <David.Woodhouse@intel.com> | 2008-07-11 14:36:25 +0100 |
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committer | David Woodhouse <David.Woodhouse@intel.com> | 2008-07-11 14:36:25 +0100 |
commit | a8931ef380c92d121ae74ecfb03b2d63f72eea6f (patch) | |
tree | 980fb6b019e11e6cb1ece55b7faff184721a8053 /arch/powerpc/kvm | |
parent | 90574d0a4d4b73308ae54a2a57a4f3f1fa98e984 (diff) | |
parent | e5a5816f7875207cb0a0a7032e39a4686c5e10a4 (diff) |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Diffstat (limited to 'arch/powerpc/kvm')
-rw-r--r-- | arch/powerpc/kvm/44x_tlb.c | 9 | ||||
-rw-r--r-- | arch/powerpc/kvm/booke_guest.c | 39 | ||||
-rw-r--r-- | arch/powerpc/kvm/emulate.c | 12 | ||||
-rw-r--r-- | arch/powerpc/kvm/powerpc.c | 20 |
4 files changed, 39 insertions, 41 deletions
diff --git a/arch/powerpc/kvm/44x_tlb.c b/arch/powerpc/kvm/44x_tlb.c index f5d7a5eab96..75dff7cfa81 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(¤t->mm->mmap_sem); + down_read(¤t->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(¤t->mm->mmap_sem); return; } hpaddr = page_to_phys(new_page); /* Drop reference to old page. */ kvmppc_44x_shadow_release(vcpu, victim); - up_write(¤t->mm->mmap_sem); + up_read(¤t->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 6d9884a6884..9c8ad850c6e 100644 --- a/arch/powerpc/kvm/booke_guest.c +++ b/arch/powerpc/kvm/booke_guest.c @@ -49,6 +49,7 @@ struct kvm_stats_debugfs_item debugfs_entries[] = { { "inst_emu", VCPU_STAT(emulated_inst_exits) }, { "dec", VCPU_STAT(dec_exits) }, { "ext_intr", VCPU_STAT(ext_intr_exits) }, + { "halt_wakeup", VCPU_STAT(halt_wakeup) }, { NULL } }; @@ -226,39 +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 * @@ -338,6 +306,11 @@ int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu, } break; + case BOOKE_INTERRUPT_FP_UNAVAIL: + kvmppc_queue_exception(vcpu, exit_nr); + r = RESUME_GUEST; + break; + case BOOKE_INTERRUPT_DATA_STORAGE: vcpu->arch.dear = vcpu->arch.fault_dear; vcpu->arch.esr = vcpu->arch.fault_esr; diff --git a/arch/powerpc/kvm/emulate.c b/arch/powerpc/kvm/emulate.c index a03fe0c8069..00009746128 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); diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c index bad40bd2d3a..777e0f34e0e 100644 --- a/arch/powerpc/kvm/powerpc.c +++ b/arch/powerpc/kvm/powerpc.c @@ -36,13 +36,12 @@ gfn_t unalias_gfn(struct kvm *kvm, gfn_t gfn) int kvm_cpu_has_interrupt(struct kvm_vcpu *v) { - /* XXX implement me */ - return 0; + return !!(v->arch.pending_exceptions); } int kvm_arch_vcpu_runnable(struct kvm_vcpu *v) { - return 1; + return !(v->arch.msr & MSR_WE); } @@ -214,6 +213,11 @@ static void kvmppc_decrementer_func(unsigned long data) struct kvm_vcpu *vcpu = (struct kvm_vcpu *)data; kvmppc_queue_exception(vcpu, BOOKE_INTERRUPT_DECREMENTER); + + if (waitqueue_active(&vcpu->wq)) { + wake_up_interruptible(&vcpu->wq); + vcpu->stat.halt_wakeup++; + } } int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu) @@ -339,6 +343,8 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run) int r; sigset_t sigsaved; + vcpu_load(vcpu); + if (vcpu->sigset_active) sigprocmask(SIG_SETMASK, &vcpu->sigset, &sigsaved); @@ -363,12 +369,20 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run) if (vcpu->sigset_active) sigprocmask(SIG_SETMASK, &sigsaved, NULL); + vcpu_put(vcpu); + return r; } int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq) { kvmppc_queue_exception(vcpu, BOOKE_INTERRUPT_EXTERNAL); + + if (waitqueue_active(&vcpu->wq)) { + wake_up_interruptible(&vcpu->wq); + vcpu->stat.halt_wakeup++; + } + return 0; } |