xref: /illumos-gate/usr/src/uts/intel/io/vmm/amd/svm_softc.h (revision 32640292339b07090f10ce34d455f98711077343)
1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
3  *
4  * Copyright (c) 2013 Anish Gupta (akgupt3@gmail.com)
5  * All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice unmodified, this list of conditions, and the following
12  *    disclaimer.
13  * 2. Redistributions in binary form must reproduce the above copyright
14  *    notice, this list of conditions and the following disclaimer in the
15  *    documentation and/or other materials provided with the distribution.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27  */
28 
29 #ifndef	_SVM_SOFTC_H_
30 #define	_SVM_SOFTC_H_
31 
32 #define	SVM_IO_BITMAP_SIZE	(3 * PAGE_SIZE)
33 #define	SVM_MSR_BITMAP_SIZE	(2 * PAGE_SIZE)
34 
35 #include <sys/hma.h>
36 
37 /* This must match HOST_MSR_NUM in svm_msr.c (where it is CTASSERTed) */
38 #define	SVM_HOST_MSR_NUM	4
39 
40 /*
41  * XXX separate out 'struct vmcb' from 'svm_vcpu' to avoid wasting space
42  * due to VMCB alignment requirements.
43  */
44 struct svm_vcpu {
45 	struct vmcb	vmcb;	 /* hardware saved vcpu context */
46 	struct svm_regctx swctx; /* software saved vcpu context */
47 	uint64_t	vmcb_pa; /* VMCB physical address */
48 	uint64_t	nextrip; /* next instruction to be executed by guest */
49 	int		lastcpu; /* host cpu that the vcpu last ran on */
50 	uint32_t	dirty;	 /* state cache bits that must be cleared */
51 	uint64_t	nptgen;	 /* page table gen when the vcpu last ran */
52 	hma_svm_asid_t	hma_asid;
53 	boolean_t	loaded;
54 } __aligned(PAGE_SIZE);
55 
56 /*
57  * SVM softc, one per virtual machine.
58  */
59 struct svm_softc {
60 	uint8_t apic_page[VM_MAXCPU][PAGE_SIZE];
61 	struct svm_vcpu vcpu[VM_MAXCPU];
62 	uint64_t	nptp;		/* nested page table (host PA) */
63 	uint8_t		*iopm_bitmap;	/* shared by all vcpus */
64 	uint8_t		*msr_bitmap;	/* shared by all vcpus */
65 	struct vm	*vm;
66 	uint64_t	host_msrs[VM_MAXCPU][SVM_HOST_MSR_NUM];
67 };
68 
69 CTASSERT((offsetof(struct svm_softc, nptp) & PAGE_MASK) == 0);
70 
71 static __inline struct svm_vcpu *
svm_get_vcpu(struct svm_softc * sc,int vcpu)72 svm_get_vcpu(struct svm_softc *sc, int vcpu)
73 {
74 
75 	return (&(sc->vcpu[vcpu]));
76 }
77 
78 static __inline struct vmcb *
svm_get_vmcb(struct svm_softc * sc,int vcpu)79 svm_get_vmcb(struct svm_softc *sc, int vcpu)
80 {
81 
82 	return (&(sc->vcpu[vcpu].vmcb));
83 }
84 
85 static __inline struct vmcb_state *
svm_get_vmcb_state(struct svm_softc * sc,int vcpu)86 svm_get_vmcb_state(struct svm_softc *sc, int vcpu)
87 {
88 
89 	return (&(sc->vcpu[vcpu].vmcb.state));
90 }
91 
92 static __inline struct vmcb_ctrl *
svm_get_vmcb_ctrl(struct svm_softc * sc,int vcpu)93 svm_get_vmcb_ctrl(struct svm_softc *sc, int vcpu)
94 {
95 
96 	return (&(sc->vcpu[vcpu].vmcb.ctrl));
97 }
98 
99 static __inline struct svm_regctx *
svm_get_guest_regctx(struct svm_softc * sc,int vcpu)100 svm_get_guest_regctx(struct svm_softc *sc, int vcpu)
101 {
102 
103 	return (&(sc->vcpu[vcpu].swctx));
104 }
105 
106 static __inline void
svm_set_dirty(struct svm_softc * sc,int vcpu,uint32_t dirtybits)107 svm_set_dirty(struct svm_softc *sc, int vcpu, uint32_t dirtybits)
108 {
109 	struct svm_vcpu *vcpustate;
110 
111 	vcpustate = svm_get_vcpu(sc, vcpu);
112 	vcpustate->dirty |= dirtybits;
113 }
114 
115 #endif /* _SVM_SOFTC_H_ */
116