f7d4742540
This control is needed to enable "Posted Interrupts" and is present in all the Intel VT-x implementations supported by bhyve so enable it as the default. With this VM-exit control enabled the processor will acknowledge the APIC and store the vector number in the "VM-Exit Interruption Information" field. We now call the interrupt handler "by hand" through the IDT entry associated with the vector.
124 lines
3.4 KiB
C
124 lines
3.4 KiB
C
/*-
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* Copyright (c) 2011 NetApp, Inc.
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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, this list of conditions and the following 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 NETAPP, INC ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL NETAPP, INC OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _VMX_H_
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#define _VMX_H_
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#include "vmcs.h"
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struct pmap;
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#define GUEST_MSR_MAX_ENTRIES 64 /* arbitrary */
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struct vmxctx {
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register_t guest_rdi; /* Guest state */
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register_t guest_rsi;
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register_t guest_rdx;
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register_t guest_rcx;
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register_t guest_r8;
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register_t guest_r9;
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register_t guest_rax;
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register_t guest_rbx;
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register_t guest_rbp;
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register_t guest_r10;
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register_t guest_r11;
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register_t guest_r12;
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register_t guest_r13;
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register_t guest_r14;
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register_t guest_r15;
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register_t guest_cr2;
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register_t host_r15; /* Host state */
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register_t host_r14;
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register_t host_r13;
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register_t host_r12;
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register_t host_rbp;
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register_t host_rsp;
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register_t host_rbx;
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register_t host_rip;
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/*
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* XXX todo debug registers and fpu state
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*/
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int inst_fail_status;
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long eptgen[MAXCPU]; /* cached pmap->pm_eptgen */
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/*
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* The 'eptp' and the 'pmap' do not change during the lifetime of
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* the VM so it is safe to keep a copy in each vcpu's vmxctx.
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*/
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vm_paddr_t eptp;
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struct pmap *pmap;
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};
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struct vmxcap {
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int set;
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uint32_t proc_ctls;
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uint32_t proc_ctls2;
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};
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struct vmxstate {
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int lastcpu; /* host cpu that this 'vcpu' last ran on */
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uint16_t vpid;
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};
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struct apic_page {
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uint32_t reg[PAGE_SIZE / 4];
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};
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CTASSERT(sizeof(struct apic_page) == PAGE_SIZE);
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/* virtual machine softc */
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struct vmx {
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struct vmcs vmcs[VM_MAXCPU]; /* one vmcs per virtual cpu */
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struct apic_page apic_page[VM_MAXCPU]; /* one apic page per vcpu */
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char msr_bitmap[PAGE_SIZE];
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struct msr_entry guest_msrs[VM_MAXCPU][GUEST_MSR_MAX_ENTRIES];
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struct vmxctx ctx[VM_MAXCPU];
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struct vmxcap cap[VM_MAXCPU];
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struct vmxstate state[VM_MAXCPU];
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uint64_t eptp;
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struct vm *vm;
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};
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CTASSERT((offsetof(struct vmx, vmcs) & PAGE_MASK) == 0);
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CTASSERT((offsetof(struct vmx, msr_bitmap) & PAGE_MASK) == 0);
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CTASSERT((offsetof(struct vmx, guest_msrs) & 15) == 0);
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#define VMX_GUEST_VMEXIT 0
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#define VMX_VMRESUME_ERROR 1
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#define VMX_VMLAUNCH_ERROR 2
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#define VMX_INVEPT_ERROR 3
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int vmx_enter_guest(struct vmxctx *ctx, int launched);
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void vmx_exit_guest(void);
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void vmx_call_isr(uintptr_t entry);
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u_long vmx_fix_cr0(u_long cr0);
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u_long vmx_fix_cr4(u_long cr4);
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#endif
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