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Diffstat (limited to 'sys/amd64/vmm/intel/vmx.h')
| -rw-r--r-- | sys/amd64/vmm/intel/vmx.h | 170 |
1 files changed, 170 insertions, 0 deletions
diff --git a/sys/amd64/vmm/intel/vmx.h b/sys/amd64/vmm/intel/vmx.h new file mode 100644 index 000000000000..57499a3a6869 --- /dev/null +++ b/sys/amd64/vmm/intel/vmx.h @@ -0,0 +1,170 @@ +/*- + * SPDX-License-Identifier: BSD-2-Clause-FreeBSD + * + * Copyright (c) 2011 NetApp, Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL NETAPP, INC OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD$ + */ + +#ifndef _VMX_H_ +#define _VMX_H_ + +#include "vmcs.h" + +struct pmap; + +struct vmxctx { + register_t guest_rdi; /* Guest state */ + register_t guest_rsi; + register_t guest_rdx; + register_t guest_rcx; + register_t guest_r8; + register_t guest_r9; + register_t guest_rax; + register_t guest_rbx; + register_t guest_rbp; + register_t guest_r10; + register_t guest_r11; + register_t guest_r12; + register_t guest_r13; + register_t guest_r14; + register_t guest_r15; + register_t guest_cr2; + register_t guest_dr0; + register_t guest_dr1; + register_t guest_dr2; + register_t guest_dr3; + register_t guest_dr6; + + register_t host_r15; /* Host state */ + register_t host_r14; + register_t host_r13; + register_t host_r12; + register_t host_rbp; + register_t host_rsp; + register_t host_rbx; + register_t host_dr0; + register_t host_dr1; + register_t host_dr2; + register_t host_dr3; + register_t host_dr6; + register_t host_dr7; + uint64_t host_debugctl; + int host_tf; + + int inst_fail_status; + + /* + * The pmap needs to be deactivated in vmx_enter_guest() + * so keep a copy of the 'pmap' in each vmxctx. + */ + struct pmap *pmap; +}; + +struct vmxcap { + int set; + uint32_t proc_ctls; + uint32_t proc_ctls2; + uint32_t exc_bitmap; +}; + +struct vmxstate { + uint64_t nextrip; /* next instruction to be executed by guest */ + int lastcpu; /* host cpu that this 'vcpu' last ran on */ + uint16_t vpid; +}; + +struct apic_page { + uint32_t reg[PAGE_SIZE / 4]; +}; +CTASSERT(sizeof(struct apic_page) == PAGE_SIZE); + +/* Posted Interrupt Descriptor (described in section 29.6 of the Intel SDM) */ +struct pir_desc { + uint64_t pir[4]; + uint64_t pending; + uint64_t unused[3]; +} __aligned(64); +CTASSERT(sizeof(struct pir_desc) == 64); + +/* Index into the 'guest_msrs[]' array */ +enum { + IDX_MSR_LSTAR, + IDX_MSR_CSTAR, + IDX_MSR_STAR, + IDX_MSR_SF_MASK, + IDX_MSR_KGSBASE, + IDX_MSR_PAT, + IDX_MSR_TSC_AUX, + GUEST_MSR_NUM /* must be the last enumeration */ +}; + +/* virtual machine softc */ +struct vmx { + struct vmcs vmcs[VM_MAXCPU]; /* one vmcs per virtual cpu */ + struct apic_page apic_page[VM_MAXCPU]; /* one apic page per vcpu */ + char msr_bitmap[PAGE_SIZE]; + struct pir_desc pir_desc[VM_MAXCPU]; + uint64_t guest_msrs[VM_MAXCPU][GUEST_MSR_NUM]; + struct vmxctx ctx[VM_MAXCPU]; + struct vmxcap cap[VM_MAXCPU]; + struct vmxstate state[VM_MAXCPU]; + uint64_t eptp; + struct vm *vm; + long eptgen[MAXCPU]; /* cached pmap->pm_eptgen */ +}; +CTASSERT((offsetof(struct vmx, vmcs) & PAGE_MASK) == 0); +CTASSERT((offsetof(struct vmx, msr_bitmap) & PAGE_MASK) == 0); +CTASSERT((offsetof(struct vmx, pir_desc[0]) & 63) == 0); + +#define VMX_GUEST_VMEXIT 0 +#define VMX_VMRESUME_ERROR 1 +#define VMX_VMLAUNCH_ERROR 2 +int vmx_enter_guest(struct vmxctx *ctx, struct vmx *vmx, int launched); +void vmx_call_isr(uintptr_t entry); + +u_long vmx_fix_cr0(u_long cr0); +u_long vmx_fix_cr4(u_long cr4); + +int vmx_set_tsc_offset(struct vmx *vmx, int vcpu, uint64_t offset); + +extern char vmx_exit_guest[]; +extern char vmx_exit_guest_flush_rsb[]; + +static inline bool +vmx_have_msr_tsc_aux(struct vmx *vmx) +{ + int rdpid_rdtscp_bits = ((1 << VM_CAP_RDPID) | (1 << VM_CAP_RDTSCP)); + + /* + * Since the values of these bits are uniform across all vCPUs + * (see discussion in vmx_modinit() and initialization of these bits + * in vmx_init()), just always use vCPU-zero's capability set and + * remove the need to require a vcpuid argument. + */ + return ((vmx->cap[0].set & rdpid_rdtscp_bits) != 0); +} + +#endif |