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s390x: Create QOM device for s390 storage keys

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A new QOM style device is provided to back guest storage keys. A special
version for KVM is created, which handles the storage key access via
KVM_S390_GET_SKEYS and KVM_S390_SET_SKEYS ioctl.

Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Jason J. Herne <jjherne@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
This commit is contained in:
Jason J. Herne 2015-06-26 11:54:51 -04:00 • committed by Cornelia Huck
parent 84b48ad63b
commit 0efe406cac
5 changed files with 274 additions and 0 deletions
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55
include/hw/s390x/storage-keys.h Normal file
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/*
* 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.
*/
#ifndef __S390_STORAGE_KEYS_H
#define __S390_STORAGE_KEYS_H
#include <hw/qdev.h>
#define TYPE_S390_SKEYS "s390-skeys"
#define S390_SKEYS(obj) \
OBJECT_CHECK(S390SKeysState, (obj), TYPE_S390_SKEYS)
typedef struct S390SKeysState {
DeviceState parent_obj;
} S390SKeysState;
#define S390_SKEYS_CLASS(klass) \
OBJECT_CLASS_CHECK(S390SKeysClass, (klass), TYPE_S390_SKEYS)
#define S390_SKEYS_GET_CLASS(obj) \
OBJECT_GET_CLASS(S390SKeysClass, (obj), TYPE_S390_SKEYS)
typedef struct S390SKeysClass {
DeviceClass parent_class;
int (*skeys_enabled)(S390SKeysState *ks);
int (*get_skeys)(S390SKeysState *ks, uint64_t start_gfn, uint64_t count,
uint8_t *keys);
int (*set_skeys)(S390SKeysState *ks, uint64_t start_gfn, uint64_t count,
uint8_t *keys);
} S390SKeysClass;
#define TYPE_KVM_S390_SKEYS "s390-skeys-kvm"
#define TYPE_QEMU_S390_SKEYS "s390-skeys-qemu"
#define QEMU_S390_SKEYS(obj) \
OBJECT_CHECK(QEMUS390SKeysState, (obj), TYPE_QEMU_S390_SKEYS)
typedef struct QEMUS390SKeysState {
S390SKeysState parent_obj;
uint8_t *keydata;
uint32_t key_count;
} QEMUS390SKeysState;
void s390_skeys_init(void);
S390SKeysState *s390_get_skeys_device(void);
#endif /* __S390_STORAGE_KEYS_H */