mirror of https://gitee.com/openkylin/qemu.git
82 lines
2.2 KiB
C
82 lines
2.2 KiB
C
/*
|
|
* s390 storage key device
|
|
*
|
|
* Copyright 2015 IBM Corp.
|
|
* Author(s): Jason J. Herne <jjherne@linux.vnet.ibm.com>
|
|
*
|
|
* This work is licensed under the terms of the GNU GPL, version 2 or (at
|
|
* your option) any later version. See the COPYING file in the top-level
|
|
* directory.
|
|
*/
|
|
|
|
#include "qemu/osdep.h"
|
|
#include "hw/s390x/storage-keys.h"
|
|
#include "sysemu/kvm.h"
|
|
#include "qemu/error-report.h"
|
|
#include "qemu/module.h"
|
|
|
|
static int kvm_s390_skeys_enabled(S390SKeysState *ss)
|
|
{
|
|
S390SKeysClass *skeyclass = S390_SKEYS_GET_CLASS(ss);
|
|
uint8_t single_key;
|
|
int r;
|
|
|
|
r = skeyclass->get_skeys(ss, 0, 1, &single_key);
|
|
if (r != 0 && r != KVM_S390_GET_SKEYS_NONE) {
|
|
error_report("S390_GET_KEYS error %d", r);
|
|
}
|
|
return (r == 0);
|
|
}
|
|
|
|
static int kvm_s390_skeys_get(S390SKeysState *ss, uint64_t start_gfn,
|
|
uint64_t count, uint8_t *keys)
|
|
{
|
|
struct kvm_s390_skeys args = {
|
|
.start_gfn = start_gfn,
|
|
.count = count,
|
|
.skeydata_addr = (__u64)keys
|
|
};
|
|
|
|
return kvm_vm_ioctl(kvm_state, KVM_S390_GET_SKEYS, &args);
|
|
}
|
|
|
|
static int kvm_s390_skeys_set(S390SKeysState *ss, uint64_t start_gfn,
|
|
uint64_t count, uint8_t *keys)
|
|
{
|
|
struct kvm_s390_skeys args = {
|
|
.start_gfn = start_gfn,
|
|
.count = count,
|
|
.skeydata_addr = (__u64)keys
|
|
};
|
|
|
|
return kvm_vm_ioctl(kvm_state, KVM_S390_SET_SKEYS, &args);
|
|
}
|
|
|
|
static void kvm_s390_skeys_class_init(ObjectClass *oc, void *data)
|
|
{
|
|
S390SKeysClass *skeyclass = S390_SKEYS_CLASS(oc);
|
|
DeviceClass *dc = DEVICE_CLASS(oc);
|
|
|
|
skeyclass->skeys_enabled = kvm_s390_skeys_enabled;
|
|
skeyclass->get_skeys = kvm_s390_skeys_get;
|
|
skeyclass->set_skeys = kvm_s390_skeys_set;
|
|
|
|
/* Reason: Internal device (only one skeys device for the whole memory) */
|
|
dc->user_creatable = false;
|
|
}
|
|
|
|
static const TypeInfo kvm_s390_skeys_info = {
|
|
.name = TYPE_KVM_S390_SKEYS,
|
|
.parent = TYPE_S390_SKEYS,
|
|
.instance_size = sizeof(S390SKeysState),
|
|
.class_init = kvm_s390_skeys_class_init,
|
|
.class_size = sizeof(S390SKeysClass),
|
|
};
|
|
|
|
static void kvm_s390_skeys_register_types(void)
|
|
{
|
|
type_register_static(&kvm_s390_skeys_info);
|
|
}
|
|
|
|
type_init(kvm_s390_skeys_register_types)
|