117 lines
3.4 KiB
C
117 lines
3.4 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2013 Anish Gupta (akgupt3@gmail.com)
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice unmodified, this list of conditions, and the following
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* disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _SVM_SOFTC_H_
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#define _SVM_SOFTC_H_
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#define SVM_IO_BITMAP_SIZE (3 * PAGE_SIZE)
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#define SVM_MSR_BITMAP_SIZE (2 * PAGE_SIZE)
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struct asid {
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uint64_t gen; /* range is [1, ~0UL] */
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uint32_t num; /* range is [1, nasid - 1] */
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};
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/*
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* XXX separate out 'struct vmcb' from 'svm_vcpu' to avoid wasting space
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* due to VMCB alignment requirements.
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*/
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struct svm_vcpu {
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struct vmcb vmcb; /* hardware saved vcpu context */
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struct svm_regctx swctx; /* software saved vcpu context */
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uint64_t vmcb_pa; /* VMCB physical address */
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uint64_t nextrip; /* next instruction to be executed by guest */
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int lastcpu; /* host cpu that the vcpu last ran on */
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uint32_t dirty; /* state cache bits that must be cleared */
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long eptgen; /* pmap->pm_eptgen when the vcpu last ran */
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struct asid asid;
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} __aligned(PAGE_SIZE);
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/*
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* SVM softc, one per virtual machine.
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*/
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struct svm_softc {
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uint8_t apic_page[VM_MAXCPU][PAGE_SIZE];
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struct svm_vcpu vcpu[VM_MAXCPU];
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vm_offset_t nptp; /* nested page table */
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uint8_t *iopm_bitmap; /* shared by all vcpus */
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uint8_t *msr_bitmap; /* shared by all vcpus */
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struct vm *vm;
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};
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CTASSERT((offsetof(struct svm_softc, nptp) & PAGE_MASK) == 0);
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static __inline struct svm_vcpu *
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svm_get_vcpu(struct svm_softc *sc, int vcpu)
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{
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return (&(sc->vcpu[vcpu]));
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}
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static __inline struct vmcb *
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svm_get_vmcb(struct svm_softc *sc, int vcpu)
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{
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return (&(sc->vcpu[vcpu].vmcb));
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}
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static __inline struct vmcb_state *
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svm_get_vmcb_state(struct svm_softc *sc, int vcpu)
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{
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return (&(sc->vcpu[vcpu].vmcb.state));
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}
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static __inline struct vmcb_ctrl *
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svm_get_vmcb_ctrl(struct svm_softc *sc, int vcpu)
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{
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return (&(sc->vcpu[vcpu].vmcb.ctrl));
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}
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static __inline struct svm_regctx *
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svm_get_guest_regctx(struct svm_softc *sc, int vcpu)
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{
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return (&(sc->vcpu[vcpu].swctx));
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}
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static __inline void
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svm_set_dirty(struct svm_softc *sc, int vcpu, uint32_t dirtybits)
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{
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struct svm_vcpu *vcpustate;
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vcpustate = svm_get_vcpu(sc, vcpu);
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vcpustate->dirty |= dirtybits;
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}
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#endif /* _SVM_SOFTC_H_ */
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