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target/i386: introduce x86-confidential-guest 

Introduce a common superclass for x86 confidential guest implementations.
It will extend ConfidentialGuestSupportClass with a method that provides
the VM type to be passed to KVM_CREATE_VM.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2024-03-18 11:07:43 -04:00
parent a99c0c66eb
commit d82e9c843d
4 changed files with 77 additions and 4 deletions
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33
target/i386/confidential-guest.c Normal file
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@ -0,0 +1,33 @@
/*
* QEMU Confidential Guest support
*
* Copyright (C) 2024 Red Hat, Inc.
*
* Authors:
* Paolo Bonzini <pbonzini@redhat.com>
*
* This work is licensed under the terms of the GNU GPL, version 2 or
* later. See the COPYING file in the top-level directory.
*
*/
#include "qemu/osdep.h"
#include "confidential-guest.h"
OBJECT_DEFINE_ABSTRACT_TYPE(X86ConfidentialGuest,
x86_confidential_guest,
X86_CONFIDENTIAL_GUEST,
CONFIDENTIAL_GUEST_SUPPORT)
static void x86_confidential_guest_class_init(ObjectClass *oc, void *data)
{
}
static void x86_confidential_guest_init(Object *obj)
{
}
static void x86_confidential_guest_finalize(Object *obj)
{
}

40
target/i386/confidential-guest.h Normal file
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@ -0,0 +1,40 @@
/*
* x86-specific confidential guest methods.
*
* Copyright (c) 2024 Red Hat Inc.
*
* Authors:
* Paolo Bonzini <pbonzini@redhat.com>
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*/
#ifndef TARGET_I386_CG_H
#define TARGET_I386_CG_H
#include "qom/object.h"
#include "exec/confidential-guest-support.h"
#define TYPE_X86_CONFIDENTIAL_GUEST "x86-confidential-guest"
OBJECT_DECLARE_TYPE(X86ConfidentialGuest,
X86ConfidentialGuestClass,
X86_CONFIDENTIAL_GUEST)
struct X86ConfidentialGuest {
/* <private> */
ConfidentialGuestSupport parent_obj;
};
/**
* X86ConfidentialGuestClass:
*
* Class to be implemented by confidential-guest-support concrete objects
* for the x86 target.
*/
struct X86ConfidentialGuestClass {
/* <private> */
ConfidentialGuestSupportClass parent;
};
#endif

2
target/i386/meson.build
View File

@ -6,7 +6,7 @@ i386_ss.add(files(
'xsave_helper.c',
'cpu-dump.c',
))
i386_ss.add(when: 'CONFIG_SEV', if_true: files('host-cpu.c'))
i386_ss.add(when: 'CONFIG_SEV', if_true: files('host-cpu.c', 'confidential-guest.c'))
# x86 cpu type
i386_ss.add(when: 'CONFIG_KVM', if_true: files('host-cpu.c'))

6
target/i386/sev.c
View File

@ -35,7 +35,7 @@
#include "monitor/monitor.h"
#include "monitor/hmp-target.h"
#include "qapi/qapi-commands-misc-target.h"
#include "exec/confidential-guest-support.h"
#include "confidential-guest.h"
#include "hw/i386/pc.h"
#include "exec/address-spaces.h"
@ -54,7 +54,7 @@ OBJECT_DECLARE_SIMPLE_TYPE(SevGuestState, SEV_GUEST)
* -machine ...,memory-encryption=sev0
*/
struct SevGuestState {
ConfidentialGuestSupport parent_obj;
X86ConfidentialGuest parent_obj;
/* configuration parameters */
char *sev_device;
@ -1372,7 +1372,7 @@ sev_guest_instance_init(Object *obj)
/* sev guest info */
static const TypeInfo sev_guest_info = {
.parent = TYPE_CONFIDENTIAL_GUEST_SUPPORT,
.parent = TYPE_X86_CONFIDENTIAL_GUEST,
.name = TYPE_SEV_GUEST,
.instance_size = sizeof(SevGuestState),
.instance_finalize = sev_guest_finalize,