Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzi...

[pandora-kernel.git] / arch / s390 / kvm / kvm-s390.c

diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index 67345ae..f17296e 100644 (file)
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -62,6 +62,7 @@ struct kvm_stats_debugfs_item debugfs_entries[] = {
        { "instruction_chsc", VCPU_STAT(instruction_chsc) },
        { "instruction_stsi", VCPU_STAT(instruction_stsi) },
        { "instruction_stfl", VCPU_STAT(instruction_stfl) },
+       { "instruction_tprot", VCPU_STAT(instruction_tprot) },
        { "instruction_sigp_sense", VCPU_STAT(instruction_sigp_sense) },
        { "instruction_sigp_emergency", VCPU_STAT(instruction_sigp_emergency) },
        { "instruction_sigp_stop", VCPU_STAT(instruction_sigp_stop) },
@@ -189,7 +190,13 @@ int kvm_arch_init_vm(struct kvm *kvm)
        debug_register_view(kvm->arch.dbf, &debug_sprintf_view);
        VM_EVENT(kvm, 3, "%s", "vm created");
 
+       kvm->arch.gmap = gmap_alloc(current->mm);
+       if (!kvm->arch.gmap)
+               goto out_nogmap;
+
        return 0;
+out_nogmap:
+       debug_unregister(kvm->arch.dbf);
 out_nodbf:
        free_page((unsigned long)(kvm->arch.sca));
 out_err:
@@ -234,11 +241,13 @@ void kvm_arch_destroy_vm(struct kvm *kvm)
        kvm_free_vcpus(kvm);
        free_page((unsigned long)(kvm->arch.sca));
        debug_unregister(kvm->arch.dbf);
+       gmap_free(kvm->arch.gmap);
 }
 
 /* Section: vcpu related */
 int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu)
 {
+       vcpu->arch.gmap = vcpu->kvm->arch.gmap;
        return 0;
 }
 
@@ -284,8 +293,7 @@ static void kvm_s390_vcpu_initial_reset(struct kvm_vcpu *vcpu)
 
 int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu)
 {
-       atomic_set(&vcpu->arch.sie_block->cpuflags, CPUSTAT_ZARCH);
-       set_bit(KVM_REQ_MMU_RELOAD, &vcpu->requests);
+       atomic_set(&vcpu->arch.sie_block->cpuflags, CPUSTAT_ZARCH | CPUSTAT_SM);
        vcpu->arch.sie_block->ecb   = 6;
        vcpu->arch.sie_block->eca   = 0xC1002001U;
        vcpu->arch.sie_block->fac   = (int) (long) facilities;
@@ -453,6 +461,7 @@ static void __vcpu_run(struct kvm_vcpu *vcpu)
        local_irq_disable();
        kvm_guest_enter();
        local_irq_enable();
+       gmap_enable(vcpu->arch.gmap);
        VCPU_EVENT(vcpu, 6, "entering sie flags %x",
                   atomic_read(&vcpu->arch.sie_block->cpuflags));
        if (sie64a(vcpu->arch.sie_block, vcpu->arch.guest_gprs)) {
@@ -461,6 +470,7 @@ static void __vcpu_run(struct kvm_vcpu *vcpu)
        }
        VCPU_EVENT(vcpu, 6, "exit sie icptcode %d",
                   vcpu->arch.sie_block->icptcode);
+       gmap_disable(vcpu->arch.gmap);
        local_irq_disable();
        kvm_guest_exit();
        local_irq_enable();
@@ -474,17 +484,6 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
        sigset_t sigsaved;
 
 rerun_vcpu:
-       if (vcpu->requests)
-               if (test_and_clear_bit(KVM_REQ_MMU_RELOAD, &vcpu->requests))
-                       kvm_s390_vcpu_set_mem(vcpu);
-
-       /* verify, that memory has been registered */
-       if (!vcpu->arch.sie_block->gmslm) {
-               vcpu_put(vcpu);
-               VCPU_EVENT(vcpu, 3, "%s", "no memory registered to run vcpu");
-               return -EINVAL;
-       }
-
        if (vcpu->sigset_active)
                sigprocmask(SIG_SETMASK, &vcpu->sigset, &sigsaved);
 
@@ -545,7 +544,7 @@ rerun_vcpu:
        return rc;
 }
 
-static int __guestcopy(struct kvm_vcpu *vcpu, u64 guestdest, const void *from,
+static int __guestcopy(struct kvm_vcpu *vcpu, u64 guestdest, void *from,
                       unsigned long n, int prefix)
 {
        if (prefix)
@@ -562,7 +561,7 @@ static int __guestcopy(struct kvm_vcpu *vcpu, u64 guestdest, const void *from,
  */
 int kvm_s390_vcpu_store_status(struct kvm_vcpu *vcpu, unsigned long addr)
 {
-       const unsigned char archmode = 1;
+       unsigned char archmode = 1;
        int prefix;
 
        if (addr == KVM_S390_STORE_STATUS_NOADDR) {
@@ -680,10 +679,10 @@ int kvm_arch_prepare_memory_region(struct kvm *kvm,
        if (mem->guest_phys_addr)
                return -EINVAL;
 
-       if (mem->userspace_addr & (PAGE_SIZE - 1))
+       if (mem->userspace_addr & 0xffffful)
                return -EINVAL;
 
-       if (mem->memory_size & (PAGE_SIZE - 1))
+       if (mem->memory_size & 0xffffful)
                return -EINVAL;
 
        if (!user_alloc)
@@ -697,15 +696,14 @@ void kvm_arch_commit_memory_region(struct kvm *kvm,
                                struct kvm_memory_slot old,
                                int user_alloc)
 {
-       int i;
-       struct kvm_vcpu *vcpu;
+       int rc;
 
-       /* request update of sie control block for all available vcpus */
-       kvm_for_each_vcpu(i, vcpu, kvm) {
-               if (test_and_set_bit(KVM_REQ_MMU_RELOAD, &vcpu->requests))
-                       continue;
-               kvm_s390_inject_sigp_stop(vcpu, ACTION_RELOADVCPU_ON_STOP);
-       }
+
+       rc = gmap_map_segment(kvm->arch.gmap, mem->userspace_addr,
+               mem->guest_phys_addr, mem->memory_size);
+       if (rc)
+               printk(KERN_WARNING "kvm-s390: failed to commit memory region\n");
+       return;
 }
 
 void kvm_arch_flush_shadow(struct kvm *kvm)