28221f9c99
As the kernel has no way of disallowing the start of a huge page backed VM, we can migrate a running huge backed VM to a host that has no huge page KVM support. Let's glue huge page support support to the 3.1 machine, so we do not migrate to a destination host that doesn't have QEMU huge page support and can stop migration if KVM doesn't indicate support. Signed-off-by: Janosch Frank <frankja@linux.ibm.com> Message-Id: <20180928093435.198573-1-frankja@linux.ibm.com> Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
59 lines
1.5 KiB
C
59 lines
1.5 KiB
C
/*
|
|
* virtio ccw machine definitions
|
|
*
|
|
* Copyright 2012, 2016 IBM Corp.
|
|
* Author(s): Cornelia Huck <cornelia.huck@de.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 HW_S390X_S390_VIRTIO_CCW_H
|
|
#define HW_S390X_S390_VIRTIO_CCW_H
|
|
|
|
#include "hw/boards.h"
|
|
|
|
#define TYPE_S390_CCW_MACHINE "s390-ccw-machine"
|
|
|
|
#define S390_CCW_MACHINE(obj) \
|
|
OBJECT_CHECK(S390CcwMachineState, (obj), TYPE_S390_CCW_MACHINE)
|
|
|
|
#define S390_MACHINE_CLASS(klass) \
|
|
OBJECT_CLASS_CHECK(S390CcwMachineClass, (klass), TYPE_S390_CCW_MACHINE)
|
|
|
|
typedef struct S390CcwMachineState {
|
|
/*< private >*/
|
|
MachineState parent_obj;
|
|
|
|
/*< public >*/
|
|
bool aes_key_wrap;
|
|
bool dea_key_wrap;
|
|
uint8_t loadparm[8];
|
|
} S390CcwMachineState;
|
|
|
|
typedef struct S390CcwMachineClass {
|
|
/*< private >*/
|
|
MachineClass parent_class;
|
|
|
|
/*< public >*/
|
|
bool ri_allowed;
|
|
bool cpu_model_allowed;
|
|
bool css_migration_enabled;
|
|
bool hpage_1m_allowed;
|
|
} S390CcwMachineClass;
|
|
|
|
/* runtime-instrumentation allowed by the machine */
|
|
bool ri_allowed(void);
|
|
/* cpu model allowed by the machine */
|
|
bool cpu_model_allowed(void);
|
|
/* 1M huge page mappings allowed by the machine */
|
|
bool hpage_1m_allowed(void);
|
|
|
|
/**
|
|
* Returns true if (vmstate based) migration of the channel subsystem
|
|
* is enabled, false if it is disabled.
|
|
*/
|
|
bool css_migration_enabled(void);
|
|
|
|
#endif
|