169e0a03cSPaolo Bonzini /* 269e0a03cSPaolo Bonzini * Copyright (C) 2016 Veertu Inc, 369e0a03cSPaolo Bonzini * Copyright (C) 2017 Google Inc, 469e0a03cSPaolo Bonzini * Based on Veertu vddh/vmm/vmx.h 569e0a03cSPaolo Bonzini * 669e0a03cSPaolo Bonzini * Interfaces to Hypervisor.framework to read/write X86 registers and VMCS. 769e0a03cSPaolo Bonzini * 869e0a03cSPaolo Bonzini * This program is free software; you can redistribute it and/or 969e0a03cSPaolo Bonzini * modify it under the terms of the GNU Lesser General Public 1069e0a03cSPaolo Bonzini * License as published by the Free Software Foundation; either 1169e0a03cSPaolo Bonzini * version 2 of the License, or (at your option) any later version. 1269e0a03cSPaolo Bonzini * 1369e0a03cSPaolo Bonzini * This program is distributed in the hope that it will be useful, 1469e0a03cSPaolo Bonzini * but WITHOUT ANY WARRANTY; without even the implied warranty of 1569e0a03cSPaolo Bonzini * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 1669e0a03cSPaolo Bonzini * Lesser General Public License for more details. 1769e0a03cSPaolo Bonzini * 1869e0a03cSPaolo Bonzini * You should have received a copy of the GNU Lesser General Public 1969e0a03cSPaolo Bonzini * License along with this program; if not, see <http://www.gnu.org/licenses/>. 20*d781e24dSIzik Eidus * 21*d781e24dSIzik Eidus * This file contain code under public domain from the hvdos project: 22*d781e24dSIzik Eidus * https://github.com/mist64/hvdos 2369e0a03cSPaolo Bonzini */ 2469e0a03cSPaolo Bonzini 2569e0a03cSPaolo Bonzini #ifndef VMX_H 2669e0a03cSPaolo Bonzini #define VMX_H 2769e0a03cSPaolo Bonzini 2869e0a03cSPaolo Bonzini #include <stdint.h> 2969e0a03cSPaolo Bonzini #include <Hypervisor/hv.h> 3069e0a03cSPaolo Bonzini #include <Hypervisor/hv_vmx.h> 3169e0a03cSPaolo Bonzini #include "vmcs.h" 3269e0a03cSPaolo Bonzini #include "cpu.h" 3369e0a03cSPaolo Bonzini #include "x86.h" 3469e0a03cSPaolo Bonzini 3569e0a03cSPaolo Bonzini #include "exec/address-spaces.h" 3669e0a03cSPaolo Bonzini 3769e0a03cSPaolo Bonzini static inline uint64_t rreg(hv_vcpuid_t vcpu, hv_x86_reg_t reg) 3869e0a03cSPaolo Bonzini { 3969e0a03cSPaolo Bonzini uint64_t v; 4069e0a03cSPaolo Bonzini 4169e0a03cSPaolo Bonzini if (hv_vcpu_read_register(vcpu, reg, &v)) { 4269e0a03cSPaolo Bonzini abort(); 4369e0a03cSPaolo Bonzini } 4469e0a03cSPaolo Bonzini 4569e0a03cSPaolo Bonzini return v; 4669e0a03cSPaolo Bonzini } 4769e0a03cSPaolo Bonzini 4869e0a03cSPaolo Bonzini /* write GPR */ 4969e0a03cSPaolo Bonzini static inline void wreg(hv_vcpuid_t vcpu, hv_x86_reg_t reg, uint64_t v) 5069e0a03cSPaolo Bonzini { 5169e0a03cSPaolo Bonzini if (hv_vcpu_write_register(vcpu, reg, v)) { 5269e0a03cSPaolo Bonzini abort(); 5369e0a03cSPaolo Bonzini } 5469e0a03cSPaolo Bonzini } 5569e0a03cSPaolo Bonzini 5669e0a03cSPaolo Bonzini /* read VMCS field */ 5769e0a03cSPaolo Bonzini static inline uint64_t rvmcs(hv_vcpuid_t vcpu, uint32_t field) 5869e0a03cSPaolo Bonzini { 5969e0a03cSPaolo Bonzini uint64_t v; 6069e0a03cSPaolo Bonzini 6169e0a03cSPaolo Bonzini hv_vmx_vcpu_read_vmcs(vcpu, field, &v); 6269e0a03cSPaolo Bonzini 6369e0a03cSPaolo Bonzini return v; 6469e0a03cSPaolo Bonzini } 6569e0a03cSPaolo Bonzini 6669e0a03cSPaolo Bonzini /* write VMCS field */ 6769e0a03cSPaolo Bonzini static inline void wvmcs(hv_vcpuid_t vcpu, uint32_t field, uint64_t v) 6869e0a03cSPaolo Bonzini { 6969e0a03cSPaolo Bonzini hv_vmx_vcpu_write_vmcs(vcpu, field, v); 7069e0a03cSPaolo Bonzini } 7169e0a03cSPaolo Bonzini 7269e0a03cSPaolo Bonzini /* desired control word constrained by hardware/hypervisor capabilities */ 7369e0a03cSPaolo Bonzini static inline uint64_t cap2ctrl(uint64_t cap, uint64_t ctrl) 7469e0a03cSPaolo Bonzini { 7569e0a03cSPaolo Bonzini return (ctrl | (cap & 0xffffffff)) & (cap >> 32); 7669e0a03cSPaolo Bonzini } 7769e0a03cSPaolo Bonzini 7869e0a03cSPaolo Bonzini #define VM_ENTRY_GUEST_LMA (1LL << 9) 7969e0a03cSPaolo Bonzini 8069e0a03cSPaolo Bonzini #define AR_TYPE_ACCESSES_MASK 1 8169e0a03cSPaolo Bonzini #define AR_TYPE_READABLE_MASK (1 << 1) 8269e0a03cSPaolo Bonzini #define AR_TYPE_WRITEABLE_MASK (1 << 2) 8369e0a03cSPaolo Bonzini #define AR_TYPE_CODE_MASK (1 << 3) 8469e0a03cSPaolo Bonzini #define AR_TYPE_MASK 0x0f 8569e0a03cSPaolo Bonzini #define AR_TYPE_BUSY_64_TSS 11 8669e0a03cSPaolo Bonzini #define AR_TYPE_BUSY_32_TSS 11 8769e0a03cSPaolo Bonzini #define AR_TYPE_BUSY_16_TSS 3 8869e0a03cSPaolo Bonzini #define AR_TYPE_LDT 2 8969e0a03cSPaolo Bonzini 9069e0a03cSPaolo Bonzini static void enter_long_mode(hv_vcpuid_t vcpu, uint64_t cr0, uint64_t efer) 9169e0a03cSPaolo Bonzini { 9269e0a03cSPaolo Bonzini uint64_t entry_ctls; 9369e0a03cSPaolo Bonzini 946701d81dSPaolo Bonzini efer |= MSR_EFER_LMA; 9569e0a03cSPaolo Bonzini wvmcs(vcpu, VMCS_GUEST_IA32_EFER, efer); 9669e0a03cSPaolo Bonzini entry_ctls = rvmcs(vcpu, VMCS_ENTRY_CTLS); 9769e0a03cSPaolo Bonzini wvmcs(vcpu, VMCS_ENTRY_CTLS, rvmcs(vcpu, VMCS_ENTRY_CTLS) | 9869e0a03cSPaolo Bonzini VM_ENTRY_GUEST_LMA); 9969e0a03cSPaolo Bonzini 10069e0a03cSPaolo Bonzini uint64_t guest_tr_ar = rvmcs(vcpu, VMCS_GUEST_TR_ACCESS_RIGHTS); 1016701d81dSPaolo Bonzini if ((efer & MSR_EFER_LME) && 10269e0a03cSPaolo Bonzini (guest_tr_ar & AR_TYPE_MASK) != AR_TYPE_BUSY_64_TSS) { 10369e0a03cSPaolo Bonzini wvmcs(vcpu, VMCS_GUEST_TR_ACCESS_RIGHTS, 10469e0a03cSPaolo Bonzini (guest_tr_ar & ~AR_TYPE_MASK) | AR_TYPE_BUSY_64_TSS); 10569e0a03cSPaolo Bonzini } 10669e0a03cSPaolo Bonzini } 10769e0a03cSPaolo Bonzini 10869e0a03cSPaolo Bonzini static void exit_long_mode(hv_vcpuid_t vcpu, uint64_t cr0, uint64_t efer) 10969e0a03cSPaolo Bonzini { 11069e0a03cSPaolo Bonzini uint64_t entry_ctls; 11169e0a03cSPaolo Bonzini 11269e0a03cSPaolo Bonzini entry_ctls = rvmcs(vcpu, VMCS_ENTRY_CTLS); 11369e0a03cSPaolo Bonzini wvmcs(vcpu, VMCS_ENTRY_CTLS, entry_ctls & ~VM_ENTRY_GUEST_LMA); 11469e0a03cSPaolo Bonzini 1156701d81dSPaolo Bonzini efer &= ~MSR_EFER_LMA; 11669e0a03cSPaolo Bonzini wvmcs(vcpu, VMCS_GUEST_IA32_EFER, efer); 11769e0a03cSPaolo Bonzini } 11869e0a03cSPaolo Bonzini 11969e0a03cSPaolo Bonzini static inline void macvm_set_cr0(hv_vcpuid_t vcpu, uint64_t cr0) 12069e0a03cSPaolo Bonzini { 12169e0a03cSPaolo Bonzini int i; 12269e0a03cSPaolo Bonzini uint64_t pdpte[4] = {0, 0, 0, 0}; 12369e0a03cSPaolo Bonzini uint64_t efer = rvmcs(vcpu, VMCS_GUEST_IA32_EFER); 12469e0a03cSPaolo Bonzini uint64_t old_cr0 = rvmcs(vcpu, VMCS_GUEST_CR0); 12569e0a03cSPaolo Bonzini 12669e0a03cSPaolo Bonzini if ((cr0 & CR0_PG) && (rvmcs(vcpu, VMCS_GUEST_CR4) & CR4_PAE) && 1276701d81dSPaolo Bonzini !(efer & MSR_EFER_LME)) { 12869e0a03cSPaolo Bonzini address_space_rw(&address_space_memory, 12969e0a03cSPaolo Bonzini rvmcs(vcpu, VMCS_GUEST_CR3) & ~0x1f, 13069e0a03cSPaolo Bonzini MEMTXATTRS_UNSPECIFIED, 13169e0a03cSPaolo Bonzini (uint8_t *)pdpte, 32, 0); 13269e0a03cSPaolo Bonzini } 13369e0a03cSPaolo Bonzini 13469e0a03cSPaolo Bonzini for (i = 0; i < 4; i++) { 13569e0a03cSPaolo Bonzini wvmcs(vcpu, VMCS_GUEST_PDPTE0 + i * 2, pdpte[i]); 13669e0a03cSPaolo Bonzini } 13769e0a03cSPaolo Bonzini 13869e0a03cSPaolo Bonzini wvmcs(vcpu, VMCS_CR0_MASK, CR0_CD | CR0_NE | CR0_PG); 13969e0a03cSPaolo Bonzini wvmcs(vcpu, VMCS_CR0_SHADOW, cr0); 14069e0a03cSPaolo Bonzini 14169e0a03cSPaolo Bonzini cr0 &= ~CR0_CD; 14269e0a03cSPaolo Bonzini wvmcs(vcpu, VMCS_GUEST_CR0, cr0 | CR0_NE | CR0_ET); 14369e0a03cSPaolo Bonzini 1446701d81dSPaolo Bonzini if (efer & MSR_EFER_LME) { 14569e0a03cSPaolo Bonzini if (!(old_cr0 & CR0_PG) && (cr0 & CR0_PG)) { 14669e0a03cSPaolo Bonzini enter_long_mode(vcpu, cr0, efer); 14769e0a03cSPaolo Bonzini } 14869e0a03cSPaolo Bonzini if (/*(old_cr0 & CR0_PG) &&*/ !(cr0 & CR0_PG)) { 14969e0a03cSPaolo Bonzini exit_long_mode(vcpu, cr0, efer); 15069e0a03cSPaolo Bonzini } 15169e0a03cSPaolo Bonzini } 15269e0a03cSPaolo Bonzini 15369e0a03cSPaolo Bonzini hv_vcpu_invalidate_tlb(vcpu); 15469e0a03cSPaolo Bonzini hv_vcpu_flush(vcpu); 15569e0a03cSPaolo Bonzini } 15669e0a03cSPaolo Bonzini 15769e0a03cSPaolo Bonzini static inline void macvm_set_cr4(hv_vcpuid_t vcpu, uint64_t cr4) 15869e0a03cSPaolo Bonzini { 15969e0a03cSPaolo Bonzini uint64_t guest_cr4 = cr4 | CR4_VMXE; 16069e0a03cSPaolo Bonzini 16169e0a03cSPaolo Bonzini wvmcs(vcpu, VMCS_GUEST_CR4, guest_cr4); 16269e0a03cSPaolo Bonzini wvmcs(vcpu, VMCS_CR4_SHADOW, cr4); 16369e0a03cSPaolo Bonzini 16469e0a03cSPaolo Bonzini hv_vcpu_invalidate_tlb(vcpu); 16569e0a03cSPaolo Bonzini hv_vcpu_flush(vcpu); 16669e0a03cSPaolo Bonzini } 16769e0a03cSPaolo Bonzini 16869e0a03cSPaolo Bonzini static inline void macvm_set_rip(CPUState *cpu, uint64_t rip) 16969e0a03cSPaolo Bonzini { 17069e0a03cSPaolo Bonzini uint64_t val; 17169e0a03cSPaolo Bonzini 17269e0a03cSPaolo Bonzini /* BUG, should take considering overlap.. */ 17369e0a03cSPaolo Bonzini wreg(cpu->hvf_fd, HV_X86_RIP, rip); 17469e0a03cSPaolo Bonzini 17569e0a03cSPaolo Bonzini /* after moving forward in rip, we need to clean INTERRUPTABILITY */ 17669e0a03cSPaolo Bonzini val = rvmcs(cpu->hvf_fd, VMCS_GUEST_INTERRUPTIBILITY); 17769e0a03cSPaolo Bonzini if (val & (VMCS_INTERRUPTIBILITY_STI_BLOCKING | 17869e0a03cSPaolo Bonzini VMCS_INTERRUPTIBILITY_MOVSS_BLOCKING)) { 17969e0a03cSPaolo Bonzini wvmcs(cpu->hvf_fd, VMCS_GUEST_INTERRUPTIBILITY, 18069e0a03cSPaolo Bonzini val & ~(VMCS_INTERRUPTIBILITY_STI_BLOCKING | 18169e0a03cSPaolo Bonzini VMCS_INTERRUPTIBILITY_MOVSS_BLOCKING)); 18269e0a03cSPaolo Bonzini } 18369e0a03cSPaolo Bonzini } 18469e0a03cSPaolo Bonzini 18569e0a03cSPaolo Bonzini static inline void vmx_clear_nmi_blocking(CPUState *cpu) 18669e0a03cSPaolo Bonzini { 18769e0a03cSPaolo Bonzini X86CPU *x86_cpu = X86_CPU(cpu); 18869e0a03cSPaolo Bonzini CPUX86State *env = &x86_cpu->env; 18969e0a03cSPaolo Bonzini 19069e0a03cSPaolo Bonzini env->hflags2 &= ~HF2_NMI_MASK; 19169e0a03cSPaolo Bonzini uint32_t gi = (uint32_t) rvmcs(cpu->hvf_fd, VMCS_GUEST_INTERRUPTIBILITY); 19269e0a03cSPaolo Bonzini gi &= ~VMCS_INTERRUPTIBILITY_NMI_BLOCKING; 19369e0a03cSPaolo Bonzini wvmcs(cpu->hvf_fd, VMCS_GUEST_INTERRUPTIBILITY, gi); 19469e0a03cSPaolo Bonzini } 19569e0a03cSPaolo Bonzini 19669e0a03cSPaolo Bonzini static inline void vmx_set_nmi_blocking(CPUState *cpu) 19769e0a03cSPaolo Bonzini { 19869e0a03cSPaolo Bonzini X86CPU *x86_cpu = X86_CPU(cpu); 19969e0a03cSPaolo Bonzini CPUX86State *env = &x86_cpu->env; 20069e0a03cSPaolo Bonzini 20169e0a03cSPaolo Bonzini env->hflags2 |= HF2_NMI_MASK; 20269e0a03cSPaolo Bonzini uint32_t gi = (uint32_t)rvmcs(cpu->hvf_fd, VMCS_GUEST_INTERRUPTIBILITY); 20369e0a03cSPaolo Bonzini gi |= VMCS_INTERRUPTIBILITY_NMI_BLOCKING; 20469e0a03cSPaolo Bonzini wvmcs(cpu->hvf_fd, VMCS_GUEST_INTERRUPTIBILITY, gi); 20569e0a03cSPaolo Bonzini } 20669e0a03cSPaolo Bonzini 20769e0a03cSPaolo Bonzini static inline void vmx_set_nmi_window_exiting(CPUState *cpu) 20869e0a03cSPaolo Bonzini { 20969e0a03cSPaolo Bonzini uint64_t val; 21069e0a03cSPaolo Bonzini val = rvmcs(cpu->hvf_fd, VMCS_PRI_PROC_BASED_CTLS); 21169e0a03cSPaolo Bonzini wvmcs(cpu->hvf_fd, VMCS_PRI_PROC_BASED_CTLS, val | 21269e0a03cSPaolo Bonzini VMCS_PRI_PROC_BASED_CTLS_NMI_WINDOW_EXITING); 21369e0a03cSPaolo Bonzini 21469e0a03cSPaolo Bonzini } 21569e0a03cSPaolo Bonzini 21669e0a03cSPaolo Bonzini static inline void vmx_clear_nmi_window_exiting(CPUState *cpu) 21769e0a03cSPaolo Bonzini { 21869e0a03cSPaolo Bonzini 21969e0a03cSPaolo Bonzini uint64_t val; 22069e0a03cSPaolo Bonzini val = rvmcs(cpu->hvf_fd, VMCS_PRI_PROC_BASED_CTLS); 22169e0a03cSPaolo Bonzini wvmcs(cpu->hvf_fd, VMCS_PRI_PROC_BASED_CTLS, val & 22269e0a03cSPaolo Bonzini ~VMCS_PRI_PROC_BASED_CTLS_NMI_WINDOW_EXITING); 22369e0a03cSPaolo Bonzini } 22469e0a03cSPaolo Bonzini 22569e0a03cSPaolo Bonzini #endif 226