1caab277bSThomas Gleixner /* SPDX-License-Identifier: GPL-2.0-only */ 24f8d6632SMarc Zyngier /* 34f8d6632SMarc Zyngier * Copyright (C) 2012,2013 - ARM Ltd 44f8d6632SMarc Zyngier * Author: Marc Zyngier <marc.zyngier@arm.com> 54f8d6632SMarc Zyngier * 64f8d6632SMarc Zyngier * Derived from arch/arm/include/asm/kvm_host.h: 74f8d6632SMarc Zyngier * Copyright (C) 2012 - Virtual Open Systems and Columbia University 84f8d6632SMarc Zyngier * Author: Christoffer Dall <c.dall@virtualopensystems.com> 94f8d6632SMarc Zyngier */ 104f8d6632SMarc Zyngier 114f8d6632SMarc Zyngier #ifndef __ARM64_KVM_HOST_H__ 124f8d6632SMarc Zyngier #define __ARM64_KVM_HOST_H__ 134f8d6632SMarc Zyngier 1405469831SAndrew Scull #include <linux/arm-smccc.h> 153f61f409SDave Martin #include <linux/bitmap.h> 1665647300SPaolo Bonzini #include <linux/types.h> 173f61f409SDave Martin #include <linux/jump_label.h> 1865647300SPaolo Bonzini #include <linux/kvm_types.h> 193f61f409SDave Martin #include <linux/percpu.h> 20ff367fe4SDavid Brazdil #include <linux/psci.h> 2185738e05SJulien Thierry #include <asm/arch_gicv3.h> 223f61f409SDave Martin #include <asm/barrier.h> 2363a1e1c9SMark Rutland #include <asm/cpufeature.h> 241e0cf16cSMarc Zyngier #include <asm/cputype.h> 254f5abad9SJames Morse #include <asm/daifflags.h> 2617eed27bSDave Martin #include <asm/fpsimd.h> 274f8d6632SMarc Zyngier #include <asm/kvm.h> 283a3604bcSMarc Zyngier #include <asm/kvm_asm.h> 294f8d6632SMarc Zyngier 30c1426e4cSEric Auger #define __KVM_HAVE_ARCH_INTC_INITIALIZED 31c1426e4cSEric Auger 32920552b2SDavid Hildenbrand #define KVM_HALT_POLL_NS_DEFAULT 500000 334f8d6632SMarc Zyngier 344f8d6632SMarc Zyngier #include <kvm/arm_vgic.h> 354f8d6632SMarc Zyngier #include <kvm/arm_arch_timer.h> 3604fe4726SShannon Zhao #include <kvm/arm_pmu.h> 374f8d6632SMarc Zyngier 38ef748917SMing Lei #define KVM_MAX_VCPUS VGIC_V3_MAX_CPUS 39ef748917SMing Lei 40a22fa321SAmit Daniel Kachhap #define KVM_VCPU_MAX_FEATURES 7 414f8d6632SMarc Zyngier 427b244e2bSAndrew Jones #define KVM_REQ_SLEEP \ 432387149eSAndrew Jones KVM_ARCH_REQ_FLAGS(0, KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP) 44325f9c64SAndrew Jones #define KVM_REQ_IRQ_PENDING KVM_ARCH_REQ(1) 45358b28f0SMarc Zyngier #define KVM_REQ_VCPU_RESET KVM_ARCH_REQ(2) 468564d637SSteven Price #define KVM_REQ_RECORD_STEAL KVM_ARCH_REQ(3) 47d9c3872cSMarc Zyngier #define KVM_REQ_RELOAD_GICv4 KVM_ARCH_REQ(4) 48d0c94c49SMarc Zyngier #define KVM_REQ_RELOAD_PMU KVM_ARCH_REQ(5) 497b33a09dSOliver Upton #define KVM_REQ_SUSPEND KVM_ARCH_REQ(6) 50b13216cfSChristoffer Dall 51c862626eSKeqian Zhu #define KVM_DIRTY_LOG_MANUAL_CAPS (KVM_DIRTY_LOG_MANUAL_PROTECT_ENABLE | \ 52c862626eSKeqian Zhu KVM_DIRTY_LOG_INITIALLY_SET) 53c862626eSKeqian Zhu 54fcc5bf89SJing Zhang #define KVM_HAVE_MMU_RWLOCK 55fcc5bf89SJing Zhang 56d8b369c4SDavid Brazdil /* 57d8b369c4SDavid Brazdil * Mode of operation configurable with kvm-arm.mode early param. 58d8b369c4SDavid Brazdil * See Documentation/admin-guide/kernel-parameters.txt for more information. 59d8b369c4SDavid Brazdil */ 60d8b369c4SDavid Brazdil enum kvm_mode { 61d8b369c4SDavid Brazdil KVM_MODE_DEFAULT, 62d8b369c4SDavid Brazdil KVM_MODE_PROTECTED, 63b6a68b97SMarc Zyngier KVM_MODE_NONE, 64d8b369c4SDavid Brazdil }; 653eb681fbSDavid Brazdil enum kvm_mode kvm_get_mode(void); 66d8b369c4SDavid Brazdil 6761bbe380SChristoffer Dall DECLARE_STATIC_KEY_FALSE(userspace_irqchip_in_use); 6861bbe380SChristoffer Dall 699033bba4SDave Martin extern unsigned int kvm_sve_max_vl; 70a3be836dSDave Martin int kvm_arm_init_sve(void); 710f062bfeSDave Martin 726b7982feSAnshuman Khandual u32 __attribute_const__ kvm_target_cpu(void); 734f8d6632SMarc Zyngier int kvm_reset_vcpu(struct kvm_vcpu *vcpu); 7419bcc89eSSean Christopherson void kvm_arm_vcpu_destroy(struct kvm_vcpu *vcpu); 754f8d6632SMarc Zyngier 76e329fb75SChristoffer Dall struct kvm_vmid { 773248136bSJulien Grall atomic64_t id; 78e329fb75SChristoffer Dall }; 79e329fb75SChristoffer Dall 80a0e50aa3SChristoffer Dall struct kvm_s2_mmu { 81e329fb75SChristoffer Dall struct kvm_vmid vmid; 824f8d6632SMarc Zyngier 83a0e50aa3SChristoffer Dall /* 84a0e50aa3SChristoffer Dall * stage2 entry level table 85a0e50aa3SChristoffer Dall * 86a0e50aa3SChristoffer Dall * Two kvm_s2_mmu structures in the same VM can point to the same 87a0e50aa3SChristoffer Dall * pgd here. This happens when running a guest using a 88a0e50aa3SChristoffer Dall * translation regime that isn't affected by its own stage-2 89a0e50aa3SChristoffer Dall * translation, such as a non-VHE hypervisor running at vEL2, or 90a0e50aa3SChristoffer Dall * for vEL1/EL0 with vHCR_EL2.VM == 0. In that case, we use the 91a0e50aa3SChristoffer Dall * canonical stage-2 page tables. 92a0e50aa3SChristoffer Dall */ 93e329fb75SChristoffer Dall phys_addr_t pgd_phys; 9471233d05SWill Deacon struct kvm_pgtable *pgt; 954f8d6632SMarc Zyngier 9694d0e598SMarc Zyngier /* The last vcpu id that ran on each physical CPU */ 9794d0e598SMarc Zyngier int __percpu *last_vcpu_ran; 9894d0e598SMarc Zyngier 99cfb1a98dSQuentin Perret struct kvm_arch *arch; 100a0e50aa3SChristoffer Dall }; 101a0e50aa3SChristoffer Dall 1028d14797bSWill Deacon struct kvm_arch_memory_slot { 1038d14797bSWill Deacon }; 1048d14797bSWill Deacon 10505714cabSRaghavendra Rao Ananta /** 10605714cabSRaghavendra Rao Ananta * struct kvm_smccc_features: Descriptor of the hypercall services exposed to the guests 10705714cabSRaghavendra Rao Ananta * 10805714cabSRaghavendra Rao Ananta * @std_bmap: Bitmap of standard secure service calls 109428fd678SRaghavendra Rao Ananta * @std_hyp_bmap: Bitmap of standard hypervisor service calls 110b22216e1SRaghavendra Rao Ananta * @vendor_hyp_bmap: Bitmap of vendor specific hypervisor service calls 11105714cabSRaghavendra Rao Ananta */ 11205714cabSRaghavendra Rao Ananta struct kvm_smccc_features { 11305714cabSRaghavendra Rao Ananta unsigned long std_bmap; 114428fd678SRaghavendra Rao Ananta unsigned long std_hyp_bmap; 115b22216e1SRaghavendra Rao Ananta unsigned long vendor_hyp_bmap; 11605714cabSRaghavendra Rao Ananta }; 11705714cabSRaghavendra Rao Ananta 118a0e50aa3SChristoffer Dall struct kvm_arch { 119a0e50aa3SChristoffer Dall struct kvm_s2_mmu mmu; 120a0e50aa3SChristoffer Dall 121a0e50aa3SChristoffer Dall /* VTCR_EL2 value for this VM */ 122a0e50aa3SChristoffer Dall u64 vtcr; 123a0e50aa3SChristoffer Dall 1244f8d6632SMarc Zyngier /* Interrupt controller */ 1254f8d6632SMarc Zyngier struct vgic_dist vgic; 12685bd0ba1SMarc Zyngier 12785bd0ba1SMarc Zyngier /* Mandated version of PSCI */ 12885bd0ba1SMarc Zyngier u32 psci_version; 129c726200dSChristoffer Dall 130c726200dSChristoffer Dall /* 131c726200dSChristoffer Dall * If we encounter a data abort without valid instruction syndrome 132c726200dSChristoffer Dall * information, report this to user space. User space can (and 133c726200dSChristoffer Dall * should) opt in to this feature if KVM_CAP_ARM_NISV_TO_USER is 134c726200dSChristoffer Dall * supported. 135c726200dSChristoffer Dall */ 13606394531SMarc Zyngier #define KVM_ARCH_FLAG_RETURN_NISV_IO_ABORT_TO_USER 0 13706394531SMarc Zyngier /* Memory Tagging Extension enabled for the guest */ 13806394531SMarc Zyngier #define KVM_ARCH_FLAG_MTE_ENABLED 1 13906394531SMarc Zyngier /* At least one vCPU has ran in the VM */ 14006394531SMarc Zyngier #define KVM_ARCH_FLAG_HAS_RAN_ONCE 2 14126bf74bdSReiji Watanabe /* 14226bf74bdSReiji Watanabe * The following two bits are used to indicate the guest's EL1 14326bf74bdSReiji Watanabe * register width configuration. A value of KVM_ARCH_FLAG_EL1_32BIT 14426bf74bdSReiji Watanabe * bit is valid only when KVM_ARCH_FLAG_REG_WIDTH_CONFIGURED is set. 14526bf74bdSReiji Watanabe * Otherwise, the guest's EL1 register width has not yet been 14626bf74bdSReiji Watanabe * determined yet. 14726bf74bdSReiji Watanabe */ 14826bf74bdSReiji Watanabe #define KVM_ARCH_FLAG_REG_WIDTH_CONFIGURED 3 14926bf74bdSReiji Watanabe #define KVM_ARCH_FLAG_EL1_32BIT 4 150bfbab445SOliver Upton /* PSCI SYSTEM_SUSPEND enabled for the guest */ 151bfbab445SOliver Upton #define KVM_ARCH_FLAG_SYSTEM_SUSPEND_ENABLED 5 15226bf74bdSReiji Watanabe 15306394531SMarc Zyngier unsigned long flags; 154fd65a3b5SMarc Zyngier 155d7eec236SMarc Zyngier /* 156d7eec236SMarc Zyngier * VM-wide PMU filter, implemented as a bitmap and big enough for 157d7eec236SMarc Zyngier * up to 2^10 events (ARMv8.0) or 2^16 events (ARMv8.1+). 158d7eec236SMarc Zyngier */ 159d7eec236SMarc Zyngier unsigned long *pmu_filter; 16046b18782SMarc Zyngier struct arm_pmu *arm_pmu; 16123711a5eSMarc Zyngier 162583cda1bSAlexandru Elisei cpumask_var_t supported_cpus; 16323711a5eSMarc Zyngier 16423711a5eSMarc Zyngier u8 pfr0_csv2; 1654f1df628SMarc Zyngier u8 pfr0_csv3; 16605714cabSRaghavendra Rao Ananta 16705714cabSRaghavendra Rao Ananta /* Hypercall features firmware registers' descriptor */ 16805714cabSRaghavendra Rao Ananta struct kvm_smccc_features smccc_feat; 1694f8d6632SMarc Zyngier }; 1704f8d6632SMarc Zyngier 1714f8d6632SMarc Zyngier struct kvm_vcpu_fault_info { 1720b12620fSAlexandru Elisei u64 esr_el2; /* Hyp Syndrom Register */ 1734f8d6632SMarc Zyngier u64 far_el2; /* Hyp Fault Address Register */ 1744f8d6632SMarc Zyngier u64 hpfar_el2; /* Hyp IPA Fault Address Register */ 1750067df41SJames Morse u64 disr_el1; /* Deferred [SError] Status Register */ 1764f8d6632SMarc Zyngier }; 1774f8d6632SMarc Zyngier 1789d8415d6SMarc Zyngier enum vcpu_sysreg { 1798f7f4fe7SMarc Zyngier __INVALID_SYSREG__, /* 0 is reserved as an invalid value */ 1809d8415d6SMarc Zyngier MPIDR_EL1, /* MultiProcessor Affinity Register */ 1819d8415d6SMarc Zyngier CSSELR_EL1, /* Cache Size Selection Register */ 1829d8415d6SMarc Zyngier SCTLR_EL1, /* System Control Register */ 1839d8415d6SMarc Zyngier ACTLR_EL1, /* Auxiliary Control Register */ 1849d8415d6SMarc Zyngier CPACR_EL1, /* Coprocessor Access Control */ 18573433762SDave Martin ZCR_EL1, /* SVE Control */ 1869d8415d6SMarc Zyngier TTBR0_EL1, /* Translation Table Base Register 0 */ 1879d8415d6SMarc Zyngier TTBR1_EL1, /* Translation Table Base Register 1 */ 1889d8415d6SMarc Zyngier TCR_EL1, /* Translation Control Register */ 1899d8415d6SMarc Zyngier ESR_EL1, /* Exception Syndrome Register */ 190ef769e32SAdam Buchbinder AFSR0_EL1, /* Auxiliary Fault Status Register 0 */ 191ef769e32SAdam Buchbinder AFSR1_EL1, /* Auxiliary Fault Status Register 1 */ 1929d8415d6SMarc Zyngier FAR_EL1, /* Fault Address Register */ 1939d8415d6SMarc Zyngier MAIR_EL1, /* Memory Attribute Indirection Register */ 1949d8415d6SMarc Zyngier VBAR_EL1, /* Vector Base Address Register */ 1959d8415d6SMarc Zyngier CONTEXTIDR_EL1, /* Context ID Register */ 1969d8415d6SMarc Zyngier TPIDR_EL0, /* Thread ID, User R/W */ 1979d8415d6SMarc Zyngier TPIDRRO_EL0, /* Thread ID, User R/O */ 1989d8415d6SMarc Zyngier TPIDR_EL1, /* Thread ID, Privileged */ 1999d8415d6SMarc Zyngier AMAIR_EL1, /* Aux Memory Attribute Indirection Register */ 2009d8415d6SMarc Zyngier CNTKCTL_EL1, /* Timer Control Register (EL1) */ 2019d8415d6SMarc Zyngier PAR_EL1, /* Physical Address Register */ 2029d8415d6SMarc Zyngier MDSCR_EL1, /* Monitor Debug System Control Register */ 2039d8415d6SMarc Zyngier MDCCINT_EL1, /* Monitor Debug Comms Channel Interrupt Enable Reg */ 204d42e2671SOliver Upton OSLSR_EL1, /* OS Lock Status Register */ 205c773ae2bSJames Morse DISR_EL1, /* Deferred Interrupt Status Register */ 2069d8415d6SMarc Zyngier 207ab946834SShannon Zhao /* Performance Monitors Registers */ 208ab946834SShannon Zhao PMCR_EL0, /* Control Register */ 2093965c3ceSShannon Zhao PMSELR_EL0, /* Event Counter Selection Register */ 210051ff581SShannon Zhao PMEVCNTR0_EL0, /* Event Counter Register (0-30) */ 211051ff581SShannon Zhao PMEVCNTR30_EL0 = PMEVCNTR0_EL0 + 30, 212051ff581SShannon Zhao PMCCNTR_EL0, /* Cycle Counter Register */ 2139feb21acSShannon Zhao PMEVTYPER0_EL0, /* Event Type Register (0-30) */ 2149feb21acSShannon Zhao PMEVTYPER30_EL0 = PMEVTYPER0_EL0 + 30, 2159feb21acSShannon Zhao PMCCFILTR_EL0, /* Cycle Count Filter Register */ 21696b0eebcSShannon Zhao PMCNTENSET_EL0, /* Count Enable Set Register */ 2179db52c78SShannon Zhao PMINTENSET_EL1, /* Interrupt Enable Set Register */ 21876d883c4SShannon Zhao PMOVSSET_EL0, /* Overflow Flag Status Set Register */ 219d692b8adSShannon Zhao PMUSERENR_EL0, /* User Enable Register */ 220ab946834SShannon Zhao 221384b40caSMark Rutland /* Pointer Authentication Registers in a strict increasing order. */ 222384b40caSMark Rutland APIAKEYLO_EL1, 223384b40caSMark Rutland APIAKEYHI_EL1, 224384b40caSMark Rutland APIBKEYLO_EL1, 225384b40caSMark Rutland APIBKEYHI_EL1, 226384b40caSMark Rutland APDAKEYLO_EL1, 227384b40caSMark Rutland APDAKEYHI_EL1, 228384b40caSMark Rutland APDBKEYLO_EL1, 229384b40caSMark Rutland APDBKEYHI_EL1, 230384b40caSMark Rutland APGAKEYLO_EL1, 231384b40caSMark Rutland APGAKEYHI_EL1, 232384b40caSMark Rutland 23398909e6dSMarc Zyngier ELR_EL1, 2341bded23eSMarc Zyngier SP_EL1, 235710f1982SMarc Zyngier SPSR_EL1, 23698909e6dSMarc Zyngier 23741ce82f6SMarc Zyngier CNTVOFF_EL2, 23841ce82f6SMarc Zyngier CNTV_CVAL_EL0, 23941ce82f6SMarc Zyngier CNTV_CTL_EL0, 24041ce82f6SMarc Zyngier CNTP_CVAL_EL0, 24141ce82f6SMarc Zyngier CNTP_CTL_EL0, 24241ce82f6SMarc Zyngier 243e1f358b5SSteven Price /* Memory Tagging Extension registers */ 244e1f358b5SSteven Price RGSR_EL1, /* Random Allocation Tag Seed Register */ 245e1f358b5SSteven Price GCR_EL1, /* Tag Control Register */ 246e1f358b5SSteven Price TFSR_EL1, /* Tag Fault Status Register (EL1) */ 247e1f358b5SSteven Price TFSRE0_EL1, /* Tag Fault Status Register (EL0) */ 248e1f358b5SSteven Price 2499d8415d6SMarc Zyngier /* 32bit specific registers. Keep them at the end of the range */ 2509d8415d6SMarc Zyngier DACR32_EL2, /* Domain Access Control Register */ 2519d8415d6SMarc Zyngier IFSR32_EL2, /* Instruction Fault Status Register */ 2529d8415d6SMarc Zyngier FPEXC32_EL2, /* Floating-Point Exception Control Register */ 2539d8415d6SMarc Zyngier DBGVCR32_EL2, /* Debug Vector Catch Register */ 2549d8415d6SMarc Zyngier 2559d8415d6SMarc Zyngier NR_SYS_REGS /* Nothing after this line! */ 2569d8415d6SMarc Zyngier }; 2579d8415d6SMarc Zyngier 2584f8d6632SMarc Zyngier struct kvm_cpu_context { 259e47c2055SMarc Zyngier struct user_pt_regs regs; /* sp = sp_el0 */ 260e47c2055SMarc Zyngier 261fd85b667SMarc Zyngier u64 spsr_abt; 262fd85b667SMarc Zyngier u64 spsr_und; 263fd85b667SMarc Zyngier u64 spsr_irq; 264fd85b667SMarc Zyngier u64 spsr_fiq; 265e47c2055SMarc Zyngier 266e47c2055SMarc Zyngier struct user_fpsimd_state fp_regs; 267e47c2055SMarc Zyngier 2684f8d6632SMarc Zyngier u64 sys_regs[NR_SYS_REGS]; 269c97e166eSJames Morse 270c97e166eSJames Morse struct kvm_vcpu *__hyp_running_vcpu; 2714f8d6632SMarc Zyngier }; 2724f8d6632SMarc Zyngier 273630a1685SAndrew Murray struct kvm_host_data { 274630a1685SAndrew Murray struct kvm_cpu_context host_ctxt; 275630a1685SAndrew Murray }; 276630a1685SAndrew Murray 277ff367fe4SDavid Brazdil struct kvm_host_psci_config { 278ff367fe4SDavid Brazdil /* PSCI version used by host. */ 279ff367fe4SDavid Brazdil u32 version; 280ff367fe4SDavid Brazdil 281ff367fe4SDavid Brazdil /* Function IDs used by host if version is v0.1. */ 282ff367fe4SDavid Brazdil struct psci_0_1_function_ids function_ids_0_1; 283ff367fe4SDavid Brazdil 284767c973fSMarc Zyngier bool psci_0_1_cpu_suspend_implemented; 285767c973fSMarc Zyngier bool psci_0_1_cpu_on_implemented; 286767c973fSMarc Zyngier bool psci_0_1_cpu_off_implemented; 287767c973fSMarc Zyngier bool psci_0_1_migrate_implemented; 288ff367fe4SDavid Brazdil }; 289ff367fe4SDavid Brazdil 290ff367fe4SDavid Brazdil extern struct kvm_host_psci_config kvm_nvhe_sym(kvm_host_psci_config); 291ff367fe4SDavid Brazdil #define kvm_host_psci_config CHOOSE_NVHE_SYM(kvm_host_psci_config) 292ff367fe4SDavid Brazdil 29361fe0c37SDavid Brazdil extern s64 kvm_nvhe_sym(hyp_physvirt_offset); 29461fe0c37SDavid Brazdil #define hyp_physvirt_offset CHOOSE_NVHE_SYM(hyp_physvirt_offset) 29561fe0c37SDavid Brazdil 29661fe0c37SDavid Brazdil extern u64 kvm_nvhe_sym(hyp_cpu_logical_map)[NR_CPUS]; 29761fe0c37SDavid Brazdil #define hyp_cpu_logical_map CHOOSE_NVHE_SYM(hyp_cpu_logical_map) 29861fe0c37SDavid Brazdil 299358b28f0SMarc Zyngier struct vcpu_reset_state { 300358b28f0SMarc Zyngier unsigned long pc; 301358b28f0SMarc Zyngier unsigned long r0; 302358b28f0SMarc Zyngier bool be; 303358b28f0SMarc Zyngier bool reset; 304358b28f0SMarc Zyngier }; 305358b28f0SMarc Zyngier 3064f8d6632SMarc Zyngier struct kvm_vcpu_arch { 3074f8d6632SMarc Zyngier struct kvm_cpu_context ctxt; 3080033cd93SMark Brown 3090033cd93SMark Brown /* Guest floating point state */ 310b43b5dd9SDave Martin void *sve_state; 311b43b5dd9SDave Martin unsigned int sve_max_vl; 3120033cd93SMark Brown u64 svcr; 3134f8d6632SMarc Zyngier 314a0e50aa3SChristoffer Dall /* Stage 2 paging state used by the hardware on next switch */ 315a0e50aa3SChristoffer Dall struct kvm_s2_mmu *hw_mmu; 316a0e50aa3SChristoffer Dall 3171460b4b2SFuad Tabba /* Values of trap registers for the guest. */ 3184f8d6632SMarc Zyngier u64 hcr_el2; 319d6c850ddSFuad Tabba u64 mdcr_el2; 320cd496228SFuad Tabba u64 cptr_el2; 3214f8d6632SMarc Zyngier 3221460b4b2SFuad Tabba /* Values of trap registers for the host before guest entry. */ 3231460b4b2SFuad Tabba u64 mdcr_el2_host; 3244f8d6632SMarc Zyngier 3254f8d6632SMarc Zyngier /* Exception Information */ 3264f8d6632SMarc Zyngier struct kvm_vcpu_fault_info fault; 3274f8d6632SMarc Zyngier 328f8077b0dSMarc Zyngier /* Ownership of the FP regs */ 329f8077b0dSMarc Zyngier enum { 330f8077b0dSMarc Zyngier FP_STATE_FREE, 331f8077b0dSMarc Zyngier FP_STATE_HOST_OWNED, 332f8077b0dSMarc Zyngier FP_STATE_GUEST_OWNED, 333f8077b0dSMarc Zyngier } fp_state; 334f8077b0dSMarc Zyngier 335690bacb8SMarc Zyngier /* Configuration flags, set once and for all before the vcpu can run */ 336690bacb8SMarc Zyngier u64 cflags; 337690bacb8SMarc Zyngier 338690bacb8SMarc Zyngier /* Input flags to the hypervisor code, potentially cleared after use */ 339690bacb8SMarc Zyngier u64 iflags; 340690bacb8SMarc Zyngier 341690bacb8SMarc Zyngier /* State flags for kernel bookkeeping, unused by the hypervisor code */ 342690bacb8SMarc Zyngier u64 sflags; 343690bacb8SMarc Zyngier 34484e690bfSAlex Bennée /* 34584e690bfSAlex Bennée * We maintain more than a single set of debug registers to support 34684e690bfSAlex Bennée * debugging the guest from the host and to maintain separate host and 34784e690bfSAlex Bennée * guest state during world switches. vcpu_debug_state are the debug 34884e690bfSAlex Bennée * registers of the vcpu as the guest sees them. host_debug_state are 349834bf887SAlex Bennée * the host registers which are saved and restored during 350834bf887SAlex Bennée * world switches. external_debug_state contains the debug 351834bf887SAlex Bennée * values we want to debug the guest. This is set via the 352834bf887SAlex Bennée * KVM_SET_GUEST_DEBUG ioctl. 35384e690bfSAlex Bennée * 35484e690bfSAlex Bennée * debug_ptr points to the set of debug registers that should be loaded 35584e690bfSAlex Bennée * onto the hardware when running the guest. 35684e690bfSAlex Bennée */ 35784e690bfSAlex Bennée struct kvm_guest_debug_arch *debug_ptr; 35884e690bfSAlex Bennée struct kvm_guest_debug_arch vcpu_debug_state; 359834bf887SAlex Bennée struct kvm_guest_debug_arch external_debug_state; 36084e690bfSAlex Bennée 361e6b673b7SDave Martin struct user_fpsimd_state *host_fpsimd_state; /* hyp VA */ 36252b28657SQuentin Perret struct task_struct *parent_task; 363e6b673b7SDave Martin 364f85279b4SWill Deacon struct { 365f85279b4SWill Deacon /* {Break,watch}point registers */ 366f85279b4SWill Deacon struct kvm_guest_debug_arch regs; 367f85279b4SWill Deacon /* Statistical profiling extension */ 368f85279b4SWill Deacon u64 pmscr_el1; 369a1319260SSuzuki K Poulose /* Self-hosted trace */ 370a1319260SSuzuki K Poulose u64 trfcr_el1; 371f85279b4SWill Deacon } host_debug_state; 3724f8d6632SMarc Zyngier 3734f8d6632SMarc Zyngier /* VGIC state */ 3744f8d6632SMarc Zyngier struct vgic_cpu vgic_cpu; 3754f8d6632SMarc Zyngier struct arch_timer_cpu timer_cpu; 37604fe4726SShannon Zhao struct kvm_pmu pmu; 3774f8d6632SMarc Zyngier 3784f8d6632SMarc Zyngier /* 3794f8d6632SMarc Zyngier * Anything that is not used directly from assembly code goes 3804f8d6632SMarc Zyngier * here. 3814f8d6632SMarc Zyngier */ 3824f8d6632SMarc Zyngier 383337b99bfSAlex Bennée /* 384337b99bfSAlex Bennée * Guest registers we preserve during guest debugging. 385337b99bfSAlex Bennée * 386337b99bfSAlex Bennée * These shadow registers are updated by the kvm_handle_sys_reg 387337b99bfSAlex Bennée * trap handler if the guest accesses or updates them while we 388337b99bfSAlex Bennée * are using guest debug. 389337b99bfSAlex Bennée */ 390337b99bfSAlex Bennée struct { 391337b99bfSAlex Bennée u32 mdscr_el1; 392337b99bfSAlex Bennée } guest_debug_preserved; 393337b99bfSAlex Bennée 394b171f9bbSOliver Upton /* vcpu power state */ 395b171f9bbSOliver Upton struct kvm_mp_state mp_state; 3964f8d6632SMarc Zyngier 3973b92830aSEric Auger /* Don't run the guest (internal implementation need) */ 3983b92830aSEric Auger bool pause; 3993b92830aSEric Auger 4004f8d6632SMarc Zyngier /* Cache some mmu pages needed inside spinlock regions */ 4014f8d6632SMarc Zyngier struct kvm_mmu_memory_cache mmu_page_cache; 4024f8d6632SMarc Zyngier 4034f8d6632SMarc Zyngier /* Target CPU and feature flags */ 4046c8c0c4dSChen Gang int target; 4054f8d6632SMarc Zyngier DECLARE_BITMAP(features, KVM_VCPU_MAX_FEATURES); 4064f8d6632SMarc Zyngier 4074715c14bSJames Morse /* Virtual SError ESR to restore when HCR_EL2.VSE is set */ 4084715c14bSJames Morse u64 vsesr_el2; 409d47533daSChristoffer Dall 410358b28f0SMarc Zyngier /* Additional reset state */ 411358b28f0SMarc Zyngier struct vcpu_reset_state reset_state; 412358b28f0SMarc Zyngier 4138564d637SSteven Price /* Guest PV state */ 4148564d637SSteven Price struct { 4158564d637SSteven Price u64 last_steal; 4168564d637SSteven Price gpa_t base; 4178564d637SSteven Price } steal; 4184f8d6632SMarc Zyngier }; 4194f8d6632SMarc Zyngier 420e87abb73SMarc Zyngier /* 421e87abb73SMarc Zyngier * Each 'flag' is composed of a comma-separated triplet: 422e87abb73SMarc Zyngier * 423e87abb73SMarc Zyngier * - the flag-set it belongs to in the vcpu->arch structure 424e87abb73SMarc Zyngier * - the value for that flag 425e87abb73SMarc Zyngier * - the mask for that flag 426e87abb73SMarc Zyngier * 427e87abb73SMarc Zyngier * __vcpu_single_flag() builds such a triplet for a single-bit flag. 428e87abb73SMarc Zyngier * unpack_vcpu_flag() extract the flag value from the triplet for 429e87abb73SMarc Zyngier * direct use outside of the flag accessors. 430e87abb73SMarc Zyngier */ 431e87abb73SMarc Zyngier #define __vcpu_single_flag(_set, _f) _set, (_f), (_f) 432e87abb73SMarc Zyngier 433e87abb73SMarc Zyngier #define __unpack_flag(_set, _f, _m) _f 434e87abb73SMarc Zyngier #define unpack_vcpu_flag(...) __unpack_flag(__VA_ARGS__) 435e87abb73SMarc Zyngier 436e87abb73SMarc Zyngier #define __vcpu_get_flag(v, flagset, f, m) \ 437e87abb73SMarc Zyngier ({ \ 438e87abb73SMarc Zyngier v->arch.flagset & (m); \ 439e87abb73SMarc Zyngier }) 440e87abb73SMarc Zyngier 441e87abb73SMarc Zyngier #define __vcpu_set_flag(v, flagset, f, m) \ 442e87abb73SMarc Zyngier do { \ 443e87abb73SMarc Zyngier typeof(v->arch.flagset) *fset; \ 444e87abb73SMarc Zyngier \ 445e87abb73SMarc Zyngier fset = &v->arch.flagset; \ 446e87abb73SMarc Zyngier if (HWEIGHT(m) > 1) \ 447e87abb73SMarc Zyngier *fset &= ~(m); \ 448e87abb73SMarc Zyngier *fset |= (f); \ 449e87abb73SMarc Zyngier } while (0) 450e87abb73SMarc Zyngier 451e87abb73SMarc Zyngier #define __vcpu_clear_flag(v, flagset, f, m) \ 452e87abb73SMarc Zyngier do { \ 453e87abb73SMarc Zyngier typeof(v->arch.flagset) *fset; \ 454e87abb73SMarc Zyngier \ 455e87abb73SMarc Zyngier fset = &v->arch.flagset; \ 456e87abb73SMarc Zyngier *fset &= ~(m); \ 457e87abb73SMarc Zyngier } while (0) 458e87abb73SMarc Zyngier 459e87abb73SMarc Zyngier #define vcpu_get_flag(v, ...) __vcpu_get_flag((v), __VA_ARGS__) 460e87abb73SMarc Zyngier #define vcpu_set_flag(v, ...) __vcpu_set_flag((v), __VA_ARGS__) 461e87abb73SMarc Zyngier #define vcpu_clear_flag(v, ...) __vcpu_clear_flag((v), __VA_ARGS__) 462e87abb73SMarc Zyngier 4634c0680d3SMarc Zyngier /* SVE exposed to guest */ 4644c0680d3SMarc Zyngier #define GUEST_HAS_SVE __vcpu_single_flag(cflags, BIT(0)) 4654c0680d3SMarc Zyngier /* SVE config completed */ 4664c0680d3SMarc Zyngier #define VCPU_SVE_FINALIZED __vcpu_single_flag(cflags, BIT(1)) 4674c0680d3SMarc Zyngier /* PTRAUTH exposed to guest */ 4684c0680d3SMarc Zyngier #define GUEST_HAS_PTRAUTH __vcpu_single_flag(cflags, BIT(2)) 4694c0680d3SMarc Zyngier 470699bb2e0SMarc Zyngier /* Exception pending */ 471699bb2e0SMarc Zyngier #define PENDING_EXCEPTION __vcpu_single_flag(iflags, BIT(0)) 472699bb2e0SMarc Zyngier /* 473699bb2e0SMarc Zyngier * PC increment. Overlaps with EXCEPT_MASK on purpose so that it can't 474699bb2e0SMarc Zyngier * be set together with an exception... 475699bb2e0SMarc Zyngier */ 476699bb2e0SMarc Zyngier #define INCREMENT_PC __vcpu_single_flag(iflags, BIT(1)) 477699bb2e0SMarc Zyngier /* Target EL/MODE (not a single flag, but let's abuse the macro) */ 478699bb2e0SMarc Zyngier #define EXCEPT_MASK __vcpu_single_flag(iflags, GENMASK(3, 1)) 479699bb2e0SMarc Zyngier 480699bb2e0SMarc Zyngier /* Helpers to encode exceptions with minimum fuss */ 481699bb2e0SMarc Zyngier #define __EXCEPT_MASK_VAL unpack_vcpu_flag(EXCEPT_MASK) 482699bb2e0SMarc Zyngier #define __EXCEPT_SHIFT __builtin_ctzl(__EXCEPT_MASK_VAL) 483699bb2e0SMarc Zyngier #define __vcpu_except_flags(_f) iflags, (_f << __EXCEPT_SHIFT), __EXCEPT_MASK_VAL 484699bb2e0SMarc Zyngier 485699bb2e0SMarc Zyngier /* 486699bb2e0SMarc Zyngier * When PENDING_EXCEPTION is set, EXCEPT_MASK can take the following 487699bb2e0SMarc Zyngier * values: 488699bb2e0SMarc Zyngier * 489699bb2e0SMarc Zyngier * For AArch32 EL1: 490699bb2e0SMarc Zyngier */ 491699bb2e0SMarc Zyngier #define EXCEPT_AA32_UND __vcpu_except_flags(0) 492699bb2e0SMarc Zyngier #define EXCEPT_AA32_IABT __vcpu_except_flags(1) 493699bb2e0SMarc Zyngier #define EXCEPT_AA32_DABT __vcpu_except_flags(2) 494699bb2e0SMarc Zyngier /* For AArch64: */ 495699bb2e0SMarc Zyngier #define EXCEPT_AA64_EL1_SYNC __vcpu_except_flags(0) 496699bb2e0SMarc Zyngier #define EXCEPT_AA64_EL1_IRQ __vcpu_except_flags(1) 497699bb2e0SMarc Zyngier #define EXCEPT_AA64_EL1_FIQ __vcpu_except_flags(2) 498699bb2e0SMarc Zyngier #define EXCEPT_AA64_EL1_SERR __vcpu_except_flags(3) 499699bb2e0SMarc Zyngier /* For AArch64 with NV (one day): */ 500699bb2e0SMarc Zyngier #define EXCEPT_AA64_EL2_SYNC __vcpu_except_flags(4) 501699bb2e0SMarc Zyngier #define EXCEPT_AA64_EL2_IRQ __vcpu_except_flags(5) 502699bb2e0SMarc Zyngier #define EXCEPT_AA64_EL2_FIQ __vcpu_except_flags(6) 503699bb2e0SMarc Zyngier #define EXCEPT_AA64_EL2_SERR __vcpu_except_flags(7) 504b1da4908SMarc Zyngier /* Guest debug is live */ 505b1da4908SMarc Zyngier #define DEBUG_DIRTY __vcpu_single_flag(iflags, BIT(4)) 506b1da4908SMarc Zyngier /* Save SPE context if active */ 507b1da4908SMarc Zyngier #define DEBUG_STATE_SAVE_SPE __vcpu_single_flag(iflags, BIT(5)) 508b1da4908SMarc Zyngier /* Save TRBE context if active */ 509b1da4908SMarc Zyngier #define DEBUG_STATE_SAVE_TRBE __vcpu_single_flag(iflags, BIT(6)) 510e87abb73SMarc Zyngier 5110affa37fSMarc Zyngier /* SVE enabled for host EL0 */ 5120affa37fSMarc Zyngier #define HOST_SVE_ENABLED __vcpu_single_flag(sflags, BIT(0)) 5130affa37fSMarc Zyngier /* SME enabled for EL0 */ 5140affa37fSMarc Zyngier #define HOST_SME_ENABLED __vcpu_single_flag(sflags, BIT(1)) 515aff3ccd7SMarc Zyngier /* Physical CPU not in supported_cpus */ 516aff3ccd7SMarc Zyngier #define ON_UNSUPPORTED_CPU __vcpu_single_flag(sflags, BIT(2)) 517eebc538dSMarc Zyngier /* WFIT instruction trapped */ 518eebc538dSMarc Zyngier #define IN_WFIT __vcpu_single_flag(sflags, BIT(3)) 519*30b6ab45SMarc Zyngier /* vcpu system registers loaded on physical CPU */ 520*30b6ab45SMarc Zyngier #define SYSREGS_ON_CPU __vcpu_single_flag(sflags, BIT(4)) 5210affa37fSMarc Zyngier 522b43b5dd9SDave Martin /* Pointer to the vcpu's SVE FFR for sve_{save,load}_state() */ 523985d3a1bSMarc Zyngier #define vcpu_sve_pffr(vcpu) (kern_hyp_va((vcpu)->arch.sve_state) + \ 524985d3a1bSMarc Zyngier sve_ffr_offset((vcpu)->arch.sve_max_vl)) 525b43b5dd9SDave Martin 526468f3477SMarc Zyngier #define vcpu_sve_max_vq(vcpu) sve_vq_from_vl((vcpu)->arch.sve_max_vl) 527b3eb56b6SDave Martin 528e1c9c983SDave Martin #define vcpu_sve_state_size(vcpu) ({ \ 529e1c9c983SDave Martin size_t __size_ret; \ 530e1c9c983SDave Martin unsigned int __vcpu_vq; \ 531e1c9c983SDave Martin \ 532e1c9c983SDave Martin if (WARN_ON(!sve_vl_valid((vcpu)->arch.sve_max_vl))) { \ 533e1c9c983SDave Martin __size_ret = 0; \ 534e1c9c983SDave Martin } else { \ 535468f3477SMarc Zyngier __vcpu_vq = vcpu_sve_max_vq(vcpu); \ 536e1c9c983SDave Martin __size_ret = SVE_SIG_REGS_SIZE(__vcpu_vq); \ 537e1c9c983SDave Martin } \ 538e1c9c983SDave Martin \ 539e1c9c983SDave Martin __size_ret; \ 540e1c9c983SDave Martin }) 541e1c9c983SDave Martin 542892fd259SMarc Zyngier #define KVM_GUESTDBG_VALID_MASK (KVM_GUESTDBG_ENABLE | \ 543892fd259SMarc Zyngier KVM_GUESTDBG_USE_SW_BP | \ 544892fd259SMarc Zyngier KVM_GUESTDBG_USE_HW | \ 545892fd259SMarc Zyngier KVM_GUESTDBG_SINGLESTEP) 5461765edbaSDave Martin 5471765edbaSDave Martin #define vcpu_has_sve(vcpu) (system_supports_sve() && \ 5484c0680d3SMarc Zyngier vcpu_get_flag(vcpu, GUEST_HAS_SVE)) 549fa89d31cSDave Martin 550bf4086b1SMarc Zyngier #ifdef CONFIG_ARM64_PTR_AUTH 551bf4086b1SMarc Zyngier #define vcpu_has_ptrauth(vcpu) \ 552bf4086b1SMarc Zyngier ((cpus_have_final_cap(ARM64_HAS_ADDRESS_AUTH) || \ 553bf4086b1SMarc Zyngier cpus_have_final_cap(ARM64_HAS_GENERIC_AUTH)) && \ 5544c0680d3SMarc Zyngier vcpu_get_flag(vcpu, GUEST_HAS_PTRAUTH)) 555bf4086b1SMarc Zyngier #else 556bf4086b1SMarc Zyngier #define vcpu_has_ptrauth(vcpu) false 557bf4086b1SMarc Zyngier #endif 558b890d75cSAmit Daniel Kachhap 559583cda1bSAlexandru Elisei #define vcpu_on_unsupported_cpu(vcpu) \ 560aff3ccd7SMarc Zyngier vcpu_get_flag(vcpu, ON_UNSUPPORTED_CPU) 561583cda1bSAlexandru Elisei 562583cda1bSAlexandru Elisei #define vcpu_set_on_unsupported_cpu(vcpu) \ 563aff3ccd7SMarc Zyngier vcpu_set_flag(vcpu, ON_UNSUPPORTED_CPU) 564583cda1bSAlexandru Elisei 565583cda1bSAlexandru Elisei #define vcpu_clear_on_unsupported_cpu(vcpu) \ 566aff3ccd7SMarc Zyngier vcpu_clear_flag(vcpu, ON_UNSUPPORTED_CPU) 567583cda1bSAlexandru Elisei 568e47c2055SMarc Zyngier #define vcpu_gp_regs(v) (&(v)->arch.ctxt.regs) 5698d404c4cSChristoffer Dall 5708d404c4cSChristoffer Dall /* 5711b422dd7SMarc Zyngier * Only use __vcpu_sys_reg/ctxt_sys_reg if you know you want the 5721b422dd7SMarc Zyngier * memory backed version of a register, and not the one most recently 5731b422dd7SMarc Zyngier * accessed by a running VCPU. For example, for userspace access or 5741b422dd7SMarc Zyngier * for system registers that are never context switched, but only 5751b422dd7SMarc Zyngier * emulated. 5768d404c4cSChristoffer Dall */ 5771b422dd7SMarc Zyngier #define __ctxt_sys_reg(c,r) (&(c)->sys_regs[(r)]) 5781b422dd7SMarc Zyngier 5791b422dd7SMarc Zyngier #define ctxt_sys_reg(c,r) (*__ctxt_sys_reg(c,r)) 5801b422dd7SMarc Zyngier 5811b422dd7SMarc Zyngier #define __vcpu_sys_reg(v,r) (ctxt_sys_reg(&(v)->arch.ctxt, (r))) 5828d404c4cSChristoffer Dall 583da6f1666SChristoffer Dall u64 vcpu_read_sys_reg(const struct kvm_vcpu *vcpu, int reg); 584d47533daSChristoffer Dall void vcpu_write_sys_reg(struct kvm_vcpu *vcpu, u64 val, int reg); 5858d404c4cSChristoffer Dall 58621c81001SMarc Zyngier static inline bool __vcpu_read_sys_reg_from_cpu(int reg, u64 *val) 58721c81001SMarc Zyngier { 58821c81001SMarc Zyngier /* 58921c81001SMarc Zyngier * *** VHE ONLY *** 59021c81001SMarc Zyngier * 59121c81001SMarc Zyngier * System registers listed in the switch are not saved on every 59221c81001SMarc Zyngier * exit from the guest but are only saved on vcpu_put. 59321c81001SMarc Zyngier * 59421c81001SMarc Zyngier * Note that MPIDR_EL1 for the guest is set by KVM via VMPIDR_EL2 but 59521c81001SMarc Zyngier * should never be listed below, because the guest cannot modify its 59621c81001SMarc Zyngier * own MPIDR_EL1 and MPIDR_EL1 is accessed for VCPU A from VCPU B's 59721c81001SMarc Zyngier * thread when emulating cross-VCPU communication. 59821c81001SMarc Zyngier */ 59921c81001SMarc Zyngier if (!has_vhe()) 60021c81001SMarc Zyngier return false; 60121c81001SMarc Zyngier 60221c81001SMarc Zyngier switch (reg) { 60321c81001SMarc Zyngier case CSSELR_EL1: *val = read_sysreg_s(SYS_CSSELR_EL1); break; 60421c81001SMarc Zyngier case SCTLR_EL1: *val = read_sysreg_s(SYS_SCTLR_EL12); break; 60521c81001SMarc Zyngier case CPACR_EL1: *val = read_sysreg_s(SYS_CPACR_EL12); break; 60621c81001SMarc Zyngier case TTBR0_EL1: *val = read_sysreg_s(SYS_TTBR0_EL12); break; 60721c81001SMarc Zyngier case TTBR1_EL1: *val = read_sysreg_s(SYS_TTBR1_EL12); break; 60821c81001SMarc Zyngier case TCR_EL1: *val = read_sysreg_s(SYS_TCR_EL12); break; 60921c81001SMarc Zyngier case ESR_EL1: *val = read_sysreg_s(SYS_ESR_EL12); break; 61021c81001SMarc Zyngier case AFSR0_EL1: *val = read_sysreg_s(SYS_AFSR0_EL12); break; 61121c81001SMarc Zyngier case AFSR1_EL1: *val = read_sysreg_s(SYS_AFSR1_EL12); break; 61221c81001SMarc Zyngier case FAR_EL1: *val = read_sysreg_s(SYS_FAR_EL12); break; 61321c81001SMarc Zyngier case MAIR_EL1: *val = read_sysreg_s(SYS_MAIR_EL12); break; 61421c81001SMarc Zyngier case VBAR_EL1: *val = read_sysreg_s(SYS_VBAR_EL12); break; 61521c81001SMarc Zyngier case CONTEXTIDR_EL1: *val = read_sysreg_s(SYS_CONTEXTIDR_EL12);break; 61621c81001SMarc Zyngier case TPIDR_EL0: *val = read_sysreg_s(SYS_TPIDR_EL0); break; 61721c81001SMarc Zyngier case TPIDRRO_EL0: *val = read_sysreg_s(SYS_TPIDRRO_EL0); break; 61821c81001SMarc Zyngier case TPIDR_EL1: *val = read_sysreg_s(SYS_TPIDR_EL1); break; 61921c81001SMarc Zyngier case AMAIR_EL1: *val = read_sysreg_s(SYS_AMAIR_EL12); break; 62021c81001SMarc Zyngier case CNTKCTL_EL1: *val = read_sysreg_s(SYS_CNTKCTL_EL12); break; 62121c81001SMarc Zyngier case ELR_EL1: *val = read_sysreg_s(SYS_ELR_EL12); break; 62221c81001SMarc Zyngier case PAR_EL1: *val = read_sysreg_par(); break; 62321c81001SMarc Zyngier case DACR32_EL2: *val = read_sysreg_s(SYS_DACR32_EL2); break; 62421c81001SMarc Zyngier case IFSR32_EL2: *val = read_sysreg_s(SYS_IFSR32_EL2); break; 62521c81001SMarc Zyngier case DBGVCR32_EL2: *val = read_sysreg_s(SYS_DBGVCR32_EL2); break; 62621c81001SMarc Zyngier default: return false; 62721c81001SMarc Zyngier } 62821c81001SMarc Zyngier 62921c81001SMarc Zyngier return true; 63021c81001SMarc Zyngier } 63121c81001SMarc Zyngier 63221c81001SMarc Zyngier static inline bool __vcpu_write_sys_reg_to_cpu(u64 val, int reg) 63321c81001SMarc Zyngier { 63421c81001SMarc Zyngier /* 63521c81001SMarc Zyngier * *** VHE ONLY *** 63621c81001SMarc Zyngier * 63721c81001SMarc Zyngier * System registers listed in the switch are not restored on every 63821c81001SMarc Zyngier * entry to the guest but are only restored on vcpu_load. 63921c81001SMarc Zyngier * 64021c81001SMarc Zyngier * Note that MPIDR_EL1 for the guest is set by KVM via VMPIDR_EL2 but 64121c81001SMarc Zyngier * should never be listed below, because the MPIDR should only be set 64221c81001SMarc Zyngier * once, before running the VCPU, and never changed later. 64321c81001SMarc Zyngier */ 64421c81001SMarc Zyngier if (!has_vhe()) 64521c81001SMarc Zyngier return false; 64621c81001SMarc Zyngier 64721c81001SMarc Zyngier switch (reg) { 64821c81001SMarc Zyngier case CSSELR_EL1: write_sysreg_s(val, SYS_CSSELR_EL1); break; 64921c81001SMarc Zyngier case SCTLR_EL1: write_sysreg_s(val, SYS_SCTLR_EL12); break; 65021c81001SMarc Zyngier case CPACR_EL1: write_sysreg_s(val, SYS_CPACR_EL12); break; 65121c81001SMarc Zyngier case TTBR0_EL1: write_sysreg_s(val, SYS_TTBR0_EL12); break; 65221c81001SMarc Zyngier case TTBR1_EL1: write_sysreg_s(val, SYS_TTBR1_EL12); break; 65321c81001SMarc Zyngier case TCR_EL1: write_sysreg_s(val, SYS_TCR_EL12); break; 65421c81001SMarc Zyngier case ESR_EL1: write_sysreg_s(val, SYS_ESR_EL12); break; 65521c81001SMarc Zyngier case AFSR0_EL1: write_sysreg_s(val, SYS_AFSR0_EL12); break; 65621c81001SMarc Zyngier case AFSR1_EL1: write_sysreg_s(val, SYS_AFSR1_EL12); break; 65721c81001SMarc Zyngier case FAR_EL1: write_sysreg_s(val, SYS_FAR_EL12); break; 65821c81001SMarc Zyngier case MAIR_EL1: write_sysreg_s(val, SYS_MAIR_EL12); break; 65921c81001SMarc Zyngier case VBAR_EL1: write_sysreg_s(val, SYS_VBAR_EL12); break; 66021c81001SMarc Zyngier case CONTEXTIDR_EL1: write_sysreg_s(val, SYS_CONTEXTIDR_EL12);break; 66121c81001SMarc Zyngier case TPIDR_EL0: write_sysreg_s(val, SYS_TPIDR_EL0); break; 66221c81001SMarc Zyngier case TPIDRRO_EL0: write_sysreg_s(val, SYS_TPIDRRO_EL0); break; 66321c81001SMarc Zyngier case TPIDR_EL1: write_sysreg_s(val, SYS_TPIDR_EL1); break; 66421c81001SMarc Zyngier case AMAIR_EL1: write_sysreg_s(val, SYS_AMAIR_EL12); break; 66521c81001SMarc Zyngier case CNTKCTL_EL1: write_sysreg_s(val, SYS_CNTKCTL_EL12); break; 66621c81001SMarc Zyngier case ELR_EL1: write_sysreg_s(val, SYS_ELR_EL12); break; 66721c81001SMarc Zyngier case PAR_EL1: write_sysreg_s(val, SYS_PAR_EL1); break; 66821c81001SMarc Zyngier case DACR32_EL2: write_sysreg_s(val, SYS_DACR32_EL2); break; 66921c81001SMarc Zyngier case IFSR32_EL2: write_sysreg_s(val, SYS_IFSR32_EL2); break; 67021c81001SMarc Zyngier case DBGVCR32_EL2: write_sysreg_s(val, SYS_DBGVCR32_EL2); break; 67121c81001SMarc Zyngier default: return false; 67221c81001SMarc Zyngier } 67321c81001SMarc Zyngier 67421c81001SMarc Zyngier return true; 67521c81001SMarc Zyngier } 67621c81001SMarc Zyngier 6774f8d6632SMarc Zyngier struct kvm_vm_stat { 6780193cc90SJing Zhang struct kvm_vm_stat_generic generic; 6794f8d6632SMarc Zyngier }; 6804f8d6632SMarc Zyngier 6814f8d6632SMarc Zyngier struct kvm_vcpu_stat { 6820193cc90SJing Zhang struct kvm_vcpu_stat_generic generic; 6838a7e75d4SSuraj Jitindar Singh u64 hvc_exit_stat; 684b19e6892SAmit Tomar u64 wfe_exit_stat; 685b19e6892SAmit Tomar u64 wfi_exit_stat; 686b19e6892SAmit Tomar u64 mmio_exit_user; 687b19e6892SAmit Tomar u64 mmio_exit_kernel; 688fe5161d2SOliver Upton u64 signal_exits; 689b19e6892SAmit Tomar u64 exits; 6904f8d6632SMarc Zyngier }; 6914f8d6632SMarc Zyngier 69208e873cbSYueHaibing void kvm_vcpu_preferred_target(struct kvm_vcpu_init *init); 6934f8d6632SMarc Zyngier unsigned long kvm_arm_num_regs(struct kvm_vcpu *vcpu); 6944f8d6632SMarc Zyngier int kvm_arm_copy_reg_indices(struct kvm_vcpu *vcpu, u64 __user *indices); 6954f8d6632SMarc Zyngier int kvm_arm_get_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg); 6964f8d6632SMarc Zyngier int kvm_arm_set_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg); 6976ac4a5acSMarc Zyngier 6986ac4a5acSMarc Zyngier unsigned long kvm_arm_num_sys_reg_descs(struct kvm_vcpu *vcpu); 6996ac4a5acSMarc Zyngier int kvm_arm_copy_sys_reg_indices(struct kvm_vcpu *vcpu, u64 __user *uindices); 7006ac4a5acSMarc Zyngier int kvm_arm_sys_reg_get_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *); 7016ac4a5acSMarc Zyngier int kvm_arm_sys_reg_set_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *); 7026ac4a5acSMarc Zyngier 703539aee0eSJames Morse int __kvm_arm_vcpu_get_events(struct kvm_vcpu *vcpu, 704b7b27facSDongjiu Geng struct kvm_vcpu_events *events); 705b7b27facSDongjiu Geng 706539aee0eSJames Morse int __kvm_arm_vcpu_set_events(struct kvm_vcpu *vcpu, 707b7b27facSDongjiu Geng struct kvm_vcpu_events *events); 7084f8d6632SMarc Zyngier 7094f8d6632SMarc Zyngier #define KVM_ARCH_WANT_MMU_NOTIFIER 7104f8d6632SMarc Zyngier 711b13216cfSChristoffer Dall void kvm_arm_halt_guest(struct kvm *kvm); 712b13216cfSChristoffer Dall void kvm_arm_resume_guest(struct kvm *kvm); 7134f8d6632SMarc Zyngier 714cc5705fbSMarc Zyngier #define vcpu_has_run_once(vcpu) !!rcu_access_pointer((vcpu)->pid) 715cc5705fbSMarc Zyngier 71640a50853SQuentin Perret #ifndef __KVM_NVHE_HYPERVISOR__ 717f50b6f6aSAndrew Scull #define kvm_call_hyp_nvhe(f, ...) \ 718f50b6f6aSAndrew Scull ({ \ 71905469831SAndrew Scull struct arm_smccc_res res; \ 72005469831SAndrew Scull \ 72105469831SAndrew Scull arm_smccc_1_1_hvc(KVM_HOST_SMCCC_FUNC(f), \ 72205469831SAndrew Scull ##__VA_ARGS__, &res); \ 72305469831SAndrew Scull WARN_ON(res.a0 != SMCCC_RET_SUCCESS); \ 72405469831SAndrew Scull \ 72505469831SAndrew Scull res.a1; \ 726f50b6f6aSAndrew Scull }) 727f50b6f6aSAndrew Scull 72818fc7bf8SMarc Zyngier /* 72918fc7bf8SMarc Zyngier * The couple of isb() below are there to guarantee the same behaviour 73018fc7bf8SMarc Zyngier * on VHE as on !VHE, where the eret to EL1 acts as a context 73118fc7bf8SMarc Zyngier * synchronization event. 73218fc7bf8SMarc Zyngier */ 73318fc7bf8SMarc Zyngier #define kvm_call_hyp(f, ...) \ 73418fc7bf8SMarc Zyngier do { \ 73518fc7bf8SMarc Zyngier if (has_vhe()) { \ 73618fc7bf8SMarc Zyngier f(__VA_ARGS__); \ 73718fc7bf8SMarc Zyngier isb(); \ 73818fc7bf8SMarc Zyngier } else { \ 739f50b6f6aSAndrew Scull kvm_call_hyp_nvhe(f, ##__VA_ARGS__); \ 74018fc7bf8SMarc Zyngier } \ 74118fc7bf8SMarc Zyngier } while(0) 74218fc7bf8SMarc Zyngier 74318fc7bf8SMarc Zyngier #define kvm_call_hyp_ret(f, ...) \ 74418fc7bf8SMarc Zyngier ({ \ 74518fc7bf8SMarc Zyngier typeof(f(__VA_ARGS__)) ret; \ 74618fc7bf8SMarc Zyngier \ 74718fc7bf8SMarc Zyngier if (has_vhe()) { \ 74818fc7bf8SMarc Zyngier ret = f(__VA_ARGS__); \ 74918fc7bf8SMarc Zyngier isb(); \ 75018fc7bf8SMarc Zyngier } else { \ 75105469831SAndrew Scull ret = kvm_call_hyp_nvhe(f, ##__VA_ARGS__); \ 75218fc7bf8SMarc Zyngier } \ 75318fc7bf8SMarc Zyngier \ 75418fc7bf8SMarc Zyngier ret; \ 75518fc7bf8SMarc Zyngier }) 75640a50853SQuentin Perret #else /* __KVM_NVHE_HYPERVISOR__ */ 75740a50853SQuentin Perret #define kvm_call_hyp(f, ...) f(__VA_ARGS__) 75840a50853SQuentin Perret #define kvm_call_hyp_ret(f, ...) f(__VA_ARGS__) 75940a50853SQuentin Perret #define kvm_call_hyp_nvhe(f, ...) f(__VA_ARGS__) 76040a50853SQuentin Perret #endif /* __KVM_NVHE_HYPERVISOR__ */ 76122b39ca3SMarc Zyngier 762cf5d3188SChristoffer Dall void force_vm_exit(const cpumask_t *mask); 7634f8d6632SMarc Zyngier 76474cc7e0cSTianjia Zhang int handle_exit(struct kvm_vcpu *vcpu, int exception_index); 76574cc7e0cSTianjia Zhang void handle_exit_early(struct kvm_vcpu *vcpu, int exception_index); 7664f8d6632SMarc Zyngier 7676ac4a5acSMarc Zyngier int kvm_handle_cp14_load_store(struct kvm_vcpu *vcpu); 7686ac4a5acSMarc Zyngier int kvm_handle_cp14_32(struct kvm_vcpu *vcpu); 7696ac4a5acSMarc Zyngier int kvm_handle_cp14_64(struct kvm_vcpu *vcpu); 7706ac4a5acSMarc Zyngier int kvm_handle_cp15_32(struct kvm_vcpu *vcpu); 7716ac4a5acSMarc Zyngier int kvm_handle_cp15_64(struct kvm_vcpu *vcpu); 7726ac4a5acSMarc Zyngier int kvm_handle_sys_reg(struct kvm_vcpu *vcpu); 7739369bc5cSOliver Upton int kvm_handle_cp10_id(struct kvm_vcpu *vcpu); 7746ac4a5acSMarc Zyngier 7756ac4a5acSMarc Zyngier void kvm_reset_sys_regs(struct kvm_vcpu *vcpu); 7766ac4a5acSMarc Zyngier 777f1f0c0cfSAlexandru Elisei int kvm_sys_reg_table_init(void); 7786ac4a5acSMarc Zyngier 7790e20f5e2SMarc Zyngier /* MMIO helpers */ 7800e20f5e2SMarc Zyngier void kvm_mmio_write_buf(void *buf, unsigned int len, unsigned long data); 7810e20f5e2SMarc Zyngier unsigned long kvm_mmio_read_buf(const void *buf, unsigned int len); 7820e20f5e2SMarc Zyngier 78374cc7e0cSTianjia Zhang int kvm_handle_mmio_return(struct kvm_vcpu *vcpu); 78474cc7e0cSTianjia Zhang int io_mem_abort(struct kvm_vcpu *vcpu, phys_addr_t fault_ipa); 7850e20f5e2SMarc Zyngier 786e1bfc245SSean Christopherson /* 787e1bfc245SSean Christopherson * Returns true if a Performance Monitoring Interrupt (PMI), a.k.a. perf event, 788e1bfc245SSean Christopherson * arrived in guest context. For arm64, any event that arrives while a vCPU is 789e1bfc245SSean Christopherson * loaded is considered to be "in guest". 790e1bfc245SSean Christopherson */ 791e1bfc245SSean Christopherson static inline bool kvm_arch_pmi_in_guest(struct kvm_vcpu *vcpu) 792e1bfc245SSean Christopherson { 793e1bfc245SSean Christopherson return IS_ENABLED(CONFIG_GUEST_PERF_EVENTS) && !!vcpu; 794e1bfc245SSean Christopherson } 795e1bfc245SSean Christopherson 796b48c1a45SSteven Price long kvm_hypercall_pv_features(struct kvm_vcpu *vcpu); 7978564d637SSteven Price gpa_t kvm_init_stolen_time(struct kvm_vcpu *vcpu); 7988564d637SSteven Price void kvm_update_stolen_time(struct kvm_vcpu *vcpu); 7998564d637SSteven Price 800004a0124SAndrew Jones bool kvm_arm_pvtime_supported(void); 80158772e9aSSteven Price int kvm_arm_pvtime_set_attr(struct kvm_vcpu *vcpu, 80258772e9aSSteven Price struct kvm_device_attr *attr); 80358772e9aSSteven Price int kvm_arm_pvtime_get_attr(struct kvm_vcpu *vcpu, 80458772e9aSSteven Price struct kvm_device_attr *attr); 80558772e9aSSteven Price int kvm_arm_pvtime_has_attr(struct kvm_vcpu *vcpu, 80658772e9aSSteven Price struct kvm_device_attr *attr); 80758772e9aSSteven Price 808f8051e96SShameer Kolothum extern unsigned int kvm_arm_vmid_bits; 80941783839SShameer Kolothum int kvm_arm_vmid_alloc_init(void); 81041783839SShameer Kolothum void kvm_arm_vmid_alloc_free(void); 81141783839SShameer Kolothum void kvm_arm_vmid_update(struct kvm_vmid *kvm_vmid); 812100b4f09SShameer Kolothum void kvm_arm_vmid_clear_active(void); 81341783839SShameer Kolothum 8148564d637SSteven Price static inline void kvm_arm_pvtime_vcpu_init(struct kvm_vcpu_arch *vcpu_arch) 8158564d637SSteven Price { 8168564d637SSteven Price vcpu_arch->steal.base = GPA_INVALID; 8178564d637SSteven Price } 8188564d637SSteven Price 8198564d637SSteven Price static inline bool kvm_arm_is_pvtime_enabled(struct kvm_vcpu_arch *vcpu_arch) 8208564d637SSteven Price { 8218564d637SSteven Price return (vcpu_arch->steal.base != GPA_INVALID); 8228564d637SSteven Price } 823b48c1a45SSteven Price 824b7b27facSDongjiu Geng void kvm_set_sei_esr(struct kvm_vcpu *vcpu, u64 syndrome); 825b7b27facSDongjiu Geng 8264429fc64SAndre Przywara struct kvm_vcpu *kvm_mpidr_to_vcpu(struct kvm *kvm, unsigned long mpidr); 8274429fc64SAndre Przywara 82814ef9d04SMarc Zyngier DECLARE_KVM_HYP_PER_CPU(struct kvm_host_data, kvm_host_data); 8294464e210SChristoffer Dall 8301e0cf16cSMarc Zyngier static inline void kvm_init_host_cpu_context(struct kvm_cpu_context *cpu_ctxt) 83132f13955SMarc Zyngier { 83232f13955SMarc Zyngier /* The host's MPIDR is immutable, so let's set it up at boot time */ 83371071acfSMarc Zyngier ctxt_sys_reg(cpu_ctxt, MPIDR_EL1) = read_cpuid_mpidr(); 83432f13955SMarc Zyngier } 83532f13955SMarc Zyngier 8365bdf3437SJames Morse static inline bool kvm_system_needs_idmapped_vectors(void) 8375bdf3437SJames Morse { 8385bdf3437SJames Morse return cpus_have_const_cap(ARM64_SPECTRE_V3A); 8395bdf3437SJames Morse } 8405bdf3437SJames Morse 841384b40caSMark Rutland void kvm_arm_vcpu_ptrauth_trap(struct kvm_vcpu *vcpu); 842384b40caSMark Rutland 8430865e636SRadim Krčmář static inline void kvm_arch_hardware_unsetup(void) {} 8440865e636SRadim Krčmář static inline void kvm_arch_sync_events(struct kvm *kvm) {} 8450865e636SRadim Krčmář static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {} 8460865e636SRadim Krčmář 84756c7f5e7SAlex Bennée void kvm_arm_init_debug(void); 848263d6287SAlexandru Elisei void kvm_arm_vcpu_init_debug(struct kvm_vcpu *vcpu); 84956c7f5e7SAlex Bennée void kvm_arm_setup_debug(struct kvm_vcpu *vcpu); 85056c7f5e7SAlex Bennée void kvm_arm_clear_debug(struct kvm_vcpu *vcpu); 85184e690bfSAlex Bennée void kvm_arm_reset_debug_ptr(struct kvm_vcpu *vcpu); 8527dabf02fSOliver Upton 8537dabf02fSOliver Upton #define kvm_vcpu_os_lock_enabled(vcpu) \ 8547dabf02fSOliver Upton (!!(__vcpu_sys_reg(vcpu, OSLSR_EL1) & SYS_OSLSR_OSLK)) 8557dabf02fSOliver Upton 856bb0c70bcSShannon Zhao int kvm_arm_vcpu_arch_set_attr(struct kvm_vcpu *vcpu, 857bb0c70bcSShannon Zhao struct kvm_device_attr *attr); 858bb0c70bcSShannon Zhao int kvm_arm_vcpu_arch_get_attr(struct kvm_vcpu *vcpu, 859bb0c70bcSShannon Zhao struct kvm_device_attr *attr); 860bb0c70bcSShannon Zhao int kvm_arm_vcpu_arch_has_attr(struct kvm_vcpu *vcpu, 861bb0c70bcSShannon Zhao struct kvm_device_attr *attr); 86256c7f5e7SAlex Bennée 863f0376edbSSteven Price long kvm_vm_ioctl_mte_copy_tags(struct kvm *kvm, 864f0376edbSSteven Price struct kvm_arm_copy_mte_tags *copy_tags); 865f0376edbSSteven Price 866e6b673b7SDave Martin /* Guest/host FPSIMD coordination helpers */ 867e6b673b7SDave Martin int kvm_arch_vcpu_run_map_fp(struct kvm_vcpu *vcpu); 868e6b673b7SDave Martin void kvm_arch_vcpu_load_fp(struct kvm_vcpu *vcpu); 869af9a0e21SMarc Zyngier void kvm_arch_vcpu_ctxflush_fp(struct kvm_vcpu *vcpu); 870e6b673b7SDave Martin void kvm_arch_vcpu_ctxsync_fp(struct kvm_vcpu *vcpu); 871e6b673b7SDave Martin void kvm_arch_vcpu_put_fp(struct kvm_vcpu *vcpu); 87252b28657SQuentin Perret void kvm_vcpu_unshare_task_fp(struct kvm_vcpu *vcpu); 873e6b673b7SDave Martin 874eb41238cSAndrew Murray static inline bool kvm_pmu_counter_deferred(struct perf_event_attr *attr) 875eb41238cSAndrew Murray { 876435e53fbSAndrew Murray return (!has_vhe() && attr->exclude_host); 877eb41238cSAndrew Murray } 878eb41238cSAndrew Murray 879d2602bb4SSuzuki K Poulose /* Flags for host debug state */ 880d2602bb4SSuzuki K Poulose void kvm_arch_vcpu_load_debug_state_flags(struct kvm_vcpu *vcpu); 881d2602bb4SSuzuki K Poulose void kvm_arch_vcpu_put_debug_state_flags(struct kvm_vcpu *vcpu); 882d2602bb4SSuzuki K Poulose 883052f064dSMarc Zyngier #ifdef CONFIG_KVM 884eb41238cSAndrew Murray void kvm_set_pmu_events(u32 set, struct perf_event_attr *attr); 885eb41238cSAndrew Murray void kvm_clr_pmu_events(u32 clr); 886eb41238cSAndrew Murray #else 887eb41238cSAndrew Murray static inline void kvm_set_pmu_events(u32 set, struct perf_event_attr *attr) {} 888eb41238cSAndrew Murray static inline void kvm_clr_pmu_events(u32 clr) {} 889e6b673b7SDave Martin #endif 89017eed27bSDave Martin 89113aeb9b4SDavid Brazdil void kvm_vcpu_load_sysregs_vhe(struct kvm_vcpu *vcpu); 89213aeb9b4SDavid Brazdil void kvm_vcpu_put_sysregs_vhe(struct kvm_vcpu *vcpu); 893bc192ceeSChristoffer Dall 894b130a8f7SMarc Zyngier int kvm_set_ipa_limit(void); 8950f62f0e9SSuzuki K Poulose 896d1e5b0e9SMarc Orr #define __KVM_HAVE_ARCH_VM_ALLOC 897d1e5b0e9SMarc Orr struct kvm *kvm_arch_alloc_vm(void); 898d1e5b0e9SMarc Orr 899bca607ebSMarc Zyngier int kvm_arm_setup_stage2(struct kvm *kvm, unsigned long type); 9005b6c6742SSuzuki K Poulose 9012ea7f655SFuad Tabba static inline bool kvm_vm_is_protected(struct kvm *kvm) 9022ea7f655SFuad Tabba { 9032ea7f655SFuad Tabba return false; 9042ea7f655SFuad Tabba } 9052ea7f655SFuad Tabba 9062a0c3433SFuad Tabba void kvm_init_protected_traps(struct kvm_vcpu *vcpu); 9072a0c3433SFuad Tabba 90892e68b2bSDave Martin int kvm_arm_vcpu_finalize(struct kvm_vcpu *vcpu, int feature); 9099033bba4SDave Martin bool kvm_arm_vcpu_is_finalized(struct kvm_vcpu *vcpu); 9109033bba4SDave Martin 9114c0680d3SMarc Zyngier #define kvm_arm_vcpu_sve_finalized(vcpu) vcpu_get_flag(vcpu, VCPU_SVE_FINALIZED) 9127dd32a0dSDave Martin 91306394531SMarc Zyngier #define kvm_has_mte(kvm) \ 91406394531SMarc Zyngier (system_supports_mte() && \ 91506394531SMarc Zyngier test_bit(KVM_ARCH_FLAG_MTE_ENABLED, &(kvm)->arch.flags)) 91614bda7a9SMarc Zyngier 917a8e190cdSArd Biesheuvel int kvm_trng_call(struct kvm_vcpu *vcpu); 918f320bc74SQuentin Perret #ifdef CONFIG_KVM 919f320bc74SQuentin Perret extern phys_addr_t hyp_mem_base; 920f320bc74SQuentin Perret extern phys_addr_t hyp_mem_size; 921f320bc74SQuentin Perret void __init kvm_hyp_reserve(void); 922f320bc74SQuentin Perret #else 923f320bc74SQuentin Perret static inline void kvm_hyp_reserve(void) { } 924f320bc74SQuentin Perret #endif 925a8e190cdSArd Biesheuvel 9261e579429SOliver Upton void kvm_arm_vcpu_power_off(struct kvm_vcpu *vcpu); 927b171f9bbSOliver Upton bool kvm_arm_vcpu_stopped(struct kvm_vcpu *vcpu); 9281e579429SOliver Upton 9294f8d6632SMarc Zyngier #endif /* __ARM64_KVM_HOST_H__ */ 930