Merge branch 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdim...

[karo-tx-linux.git] / arch / arm / kvm / arm.c

diff --git a/arch/arm/kvm/arm.c b/arch/arm/kvm/arm.c
index bc738d2b83929e6a05762ea8b73af6ec1ed86837..78b286994577183b8d9ef415ae3ba5f6a41113c4 100644 (file)
--- a/arch/arm/kvm/arm.c
+++ b/arch/arm/kvm/arm.c
@@ -125,6 +125,7 @@ int kvm_arch_init_vm(struct kvm *kvm, unsigned long type)
        if (ret)
                goto out_free_stage2_pgd;
 
+       kvm_vgic_early_init(kvm);
        kvm_timer_init(kvm);
 
        /* Mark the initial VMID generation invalid */
@@ -249,6 +250,7 @@ out:
 
 void kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu)
 {
+       kvm_vgic_vcpu_early_init(vcpu);
 }
 
 void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu)
@@ -278,6 +280,8 @@ int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu)
        /* Set up the timer */
        kvm_timer_vcpu_init(vcpu);
 
+       kvm_arm_reset_debug_ptr(vcpu);
+
        return 0;
 }
 
@@ -301,13 +305,6 @@ void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu)
        kvm_arm_set_running_vcpu(NULL);
 }
 
-int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
-                                       struct kvm_guest_debug *dbg)
-{
-       return -EINVAL;
-}
-
-
 int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,
                                    struct kvm_mp_state *mp_state)
 {
@@ -449,7 +446,7 @@ static int kvm_vcpu_first_run_init(struct kvm_vcpu *vcpu)
         * Map the VGIC hardware resources before running a vcpu the first
         * time on this VM.
         */
-       if (unlikely(!vgic_ready(kvm))) {
+       if (unlikely(irqchip_in_kernel(kvm) && !vgic_ready(kvm))) {
                ret = kvm_vgic_map_resources(kvm);
                if (ret)
                        return ret;
@@ -528,10 +525,20 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run)
                if (vcpu->arch.pause)
                        vcpu_pause(vcpu);
 
-               kvm_vgic_flush_hwstate(vcpu);
+               /*
+                * Disarming the background timer must be done in a
+                * preemptible context, as this call may sleep.
+                */
                kvm_timer_flush_hwstate(vcpu);
 
+               /*
+                * Preparing the interrupts to be injected also
+                * involves poking the GIC, which must be done in a
+                * non-preemptible context.
+                */
                preempt_disable();
+               kvm_vgic_flush_hwstate(vcpu);
+
                local_irq_disable();
 
                /*
@@ -544,12 +551,14 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run)
 
                if (ret <= 0 || need_new_vmid_gen(vcpu->kvm)) {
                        local_irq_enable();
+                       kvm_vgic_sync_hwstate(vcpu);
                        preempt_enable();
                        kvm_timer_sync_hwstate(vcpu);
-                       kvm_vgic_sync_hwstate(vcpu);
                        continue;
                }
 
+               kvm_arm_setup_debug(vcpu);
+
                /**************************************************************
                 * Enter the guest
                 */
@@ -564,6 +573,8 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run)
                 * Back from guest
                 *************************************************************/
 
+               kvm_arm_clear_debug(vcpu);
+
                /*
                 * We may have taken a host interrupt in HYP mode (ie
                 * while executing the guest). This interrupt is still
@@ -586,11 +597,12 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run)
                 */
                kvm_guest_exit();
                trace_kvm_exit(kvm_vcpu_trap_get_class(vcpu), *vcpu_pc(vcpu));
-               preempt_enable();
 
+               kvm_vgic_sync_hwstate(vcpu);
+
+               preempt_enable();
 
                kvm_timer_sync_hwstate(vcpu);
-               kvm_vgic_sync_hwstate(vcpu);
 
                ret = handle_exit(vcpu, run, ret);
        }
@@ -921,6 +933,8 @@ static void cpu_init_hyp_mode(void *dummy)
        vector_ptr = (unsigned long)__kvm_hyp_vector;
 
        __cpu_init_hyp_mode(boot_pgd_ptr, pgd_ptr, hyp_stack_ptr, vector_ptr);
+
+       kvm_arm_init_debug();
 }
 
 static int hyp_init_cpu_notify(struct notifier_block *self,
@@ -1066,7 +1080,7 @@ static int init_hyp_mode(void)
         */
        err = kvm_timer_hyp_init();
        if (err)
-               goto out_free_mappings;
+               goto out_free_context;
 
 #ifndef CONFIG_HOTPLUG_CPU
        free_boot_hyp_pgd();