LXR qemu/hw/s390x/s390-skeys-kvm.c

   1/*
   2 * s390 storage key device
   3 *
   4 * Copyright 2015 IBM Corp.
   5 * Author(s): Jason J. Herne <jjherne@linux.vnet.ibm.com>
   6 *
   7 * This work is licensed under the terms of the GNU GPL, version 2 or (at
   8 * your option) any later version. See the COPYING file in the top-level
   9 * directory.
  10 */
  11
  12#include "qemu/osdep.h"
  13#include "hw/s390x/storage-keys.h"
  14#include "sysemu/kvm.h"
  15#include "qemu/error-report.h"
  16
  17static int kvm_s390_skeys_enabled(S390SKeysState *ss)
  18{
  19    S390SKeysClass *skeyclass = S390_SKEYS_GET_CLASS(ss);
  20    uint8_t single_key;
  21    int r;
  22
  23    r = skeyclass->get_skeys(ss, 0, 1, &single_key);
  24    if (r != 0 && r != KVM_S390_GET_SKEYS_NONE) {
  25        error_report("S390_GET_KEYS error %d", r);
  26    }
  27    return (r == 0);
  28}
  29
  30static int kvm_s390_skeys_get(S390SKeysState *ss, uint64_t start_gfn,
  31                              uint64_t count, uint8_t *keys)
  32{
  33    struct kvm_s390_skeys args = {
  34        .start_gfn = start_gfn,
  35        .count = count,
  36        .skeydata_addr = (__u64)keys
  37    };
  38
  39    return kvm_vm_ioctl(kvm_state, KVM_S390_GET_SKEYS, &args);
  40}
  41
  42static int kvm_s390_skeys_set(S390SKeysState *ss, uint64_t start_gfn,
  43                              uint64_t count, uint8_t *keys)
  44{
  45    struct kvm_s390_skeys args = {
  46        .start_gfn = start_gfn,
  47        .count = count,
  48        .skeydata_addr = (__u64)keys
  49    };
  50
  51    return kvm_vm_ioctl(kvm_state, KVM_S390_SET_SKEYS, &args);
  52}
  53
  54static void kvm_s390_skeys_class_init(ObjectClass *oc, void *data)
  55{
  56    S390SKeysClass *skeyclass = S390_SKEYS_CLASS(oc);
  57
  58    skeyclass->skeys_enabled = kvm_s390_skeys_enabled;
  59    skeyclass->get_skeys = kvm_s390_skeys_get;
  60    skeyclass->set_skeys = kvm_s390_skeys_set;
  61}
  62
  63static const TypeInfo kvm_s390_skeys_info = {
  64    .name          = TYPE_KVM_S390_SKEYS,
  65    .parent        = TYPE_S390_SKEYS,
  66    .instance_size = sizeof(S390SKeysState),
  67    .class_init    = kvm_s390_skeys_class_init,
  68    .class_size    = sizeof(S390SKeysClass),
  69};
  70
  71static void kvm_s390_skeys_register_types(void)
  72{
  73    type_register_static(&kvm_s390_skeys_info);
  74}
  75
  76type_init(kvm_s390_skeys_register_types)
  77