/* * Copyright (C) 2012 - Virtual Open Systems and Columbia University * Author: Christoffer Dall <c.dall@virtualopensystems.com> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License, version 2, as * published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ #ifndef __ARM_KVM_HOST_H__ #define __ARM_KVM_HOST_H__ #include <linux/types.h> #include <linux/kvm_types.h> #include <asm/cputype.h> #include <asm/kvm.h> #include <asm/kvm_asm.h> #include <asm/kvm_mmio.h> #include <asm/fpstate.h> #include <asm/spectre.h> #include <kvm/arm_arch_timer.h> #define __KVM_HAVE_ARCH_INTC_INITIALIZED #define KVM_USER_MEM_SLOTS 32 #define KVM_HAVE_ONE_REG #define KVM_HALT_POLL_NS_DEFAULT 500000 #define KVM_VCPU_MAX_FEATURES 2 #include <kvm/arm_vgic.h> #ifdef CONFIG_ARM_GIC_V3 #define KVM_MAX_VCPUS VGIC_V3_MAX_CPUS #else #define KVM_MAX_VCPUS VGIC_V2_MAX_CPUS #endif #define KVM_REQ_SLEEP \ KVM_ARCH_REQ_FLAGS(0, KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP) #define KVM_REQ_IRQ_PENDING KVM_ARCH_REQ(1) #define KVM_REQ_VCPU_RESET KVM_ARCH_REQ(2) u32 *kvm_vcpu_reg(struct kvm_vcpu *vcpu, u8 reg_num, u32 mode); int __attribute_const__ kvm_target_cpu(void); int kvm_reset_vcpu(struct kvm_vcpu *vcpu); void kvm_reset_coprocs(struct kvm_vcpu *vcpu); struct kvm_arch { /* VTTBR value associated with below pgd and vmid */ u64 vttbr; /* The last vcpu id that ran on each physical CPU */ int __percpu *last_vcpu_ran; /* * Anything that is not used directly from assembly code goes * here. */ /* The VMID generation used for the virt. memory system */ u64 vmid_gen; u32 vmid; /* Stage-2 page table */ pgd_t *pgd; /* Interrupt controller */ struct vgic_dist vgic; int max_vcpus; /* Mandated version of PSCI */ u32 psci_version; }; #define KVM_NR_MEM_OBJS 40 /* * We don't want allocation failures within the mmu code, so we preallocate * enough memory for a single page fault in a cache. */ struct kvm_mmu_memory_cache { int nobjs; void *objects[KVM_NR_MEM_OBJS]; }; struct kvm_vcpu_fault_info { u32 hsr; /* Hyp Syndrome Register */ u32 hxfar; /* Hyp Data/Inst. Fault Address Register */ u32 hpfar; /* Hyp IPA Fault Address Register */ }; /* * 0 is reserved as an invalid value. * Order should be kept in sync with the save/restore code. */ enum vcpu_sysreg { __INVALID_SYSREG__, c0_MPIDR, /* MultiProcessor ID Register */ c0_CSSELR, /* Cache Size Selection Register */ c1_SCTLR, /* System Control Register */ c1_ACTLR, /* Auxiliary Control Register */ c1_CPACR, /* Coprocessor Access Control */ c2_TTBR0, /* Translation Table Base Register 0 */ c2_TTBR0_high, /* TTBR0 top 32 bits */ c2_TTBR1, /* Translation Table Base Register 1 */ c2_TTBR1_high, /* TTBR1 top 32 bits */ c2_TTBCR, /* Translation Table Base Control R. */ c3_DACR, /* Domain Access Control Register */ c5_DFSR, /* Data Fault Status Register */ c5_IFSR, /* Instruction Fault Status Register */ c5_ADFSR, /* Auxilary Data Fault Status R */ c5_AIFSR, /* Auxilary Instrunction Fault Status R */ c6_DFAR, /* Data Fault Address Register */ c6_IFAR, /* Instruction Fault Address Register */ c7_PAR, /* Physical Address Register */ c7_PAR_high, /* PAR top 32 bits */ c9_L2CTLR, /* Cortex A15/A7 L2 Control Register */ c10_PRRR, /* Primary Region Remap Register */ c10_NMRR, /* Normal Memory Remap Register */ c12_VBAR, /* Vector Base Address Register */ c13_CID, /* Context ID Register */ c13_TID_URW, /* Thread ID, User R/W */ c13_TID_URO, /* Thread ID, User R/O */ c13_TID_PRIV, /* Thread ID, Privileged */ c14_CNTKCTL, /* Timer Control Register (PL1) */ c10_AMAIR0, /* Auxilary Memory Attribute Indirection Reg0 */ c10_AMAIR1, /* Auxilary Memory Attribute Indirection Reg1 */ NR_CP15_REGS /* Number of regs (incl. invalid) */ }; struct kvm_cpu_context { struct kvm_regs gp_regs; struct vfp_hard_struct vfp; u32 cp15[NR_CP15_REGS]; }; typedef struct kvm_cpu_context kvm_cpu_context_t; struct vcpu_reset_state { unsigned long pc; unsigned long r0; bool be; bool reset; }; struct kvm_vcpu_arch { struct kvm_cpu_context ctxt; int target; /* Processor target */ DECLARE_BITMAP(features, KVM_VCPU_MAX_FEATURES); /* The CPU type we expose to the VM */ u32 midr; /* HYP trapping configuration */ u32 hcr; /* Interrupt related fields */ u32 irq_lines; /* IRQ and FIQ levels */ /* Exception Information */ struct kvm_vcpu_fault_info fault; /* Host FP context */ kvm_cpu_context_t *host_cpu_context; /* VGIC state */ struct vgic_cpu vgic_cpu; struct arch_timer_cpu timer_cpu; /* * Anything that is not used directly from assembly code goes * here. */ /* vcpu power-off state */ bool power_off; /* Don't run the guest (internal implementation need) */ bool pause; /* IO related fields */ struct kvm_decode mmio_decode; /* Cache some mmu pages needed inside spinlock regions */ struct kvm_mmu_memory_cache mmu_page_cache; struct vcpu_reset_state reset_state; /* Detect first run of a vcpu */ bool has_run_once; }; struct kvm_vm_stat { ulong remote_tlb_flush; }; struct kvm_vcpu_stat { u64 halt_successful_poll; u64 halt_attempted_poll; u64 halt_poll_invalid; u64 halt_wakeup; u64 hvc_exit_stat; u64 wfe_exit_stat; u64 wfi_exit_stat; u64 mmio_exit_user; u64 mmio_exit_kernel; u64 exits; }; #define vcpu_cp15(v,r) (v)->arch.ctxt.cp15[r] int kvm_vcpu_preferred_target(struct kvm_vcpu_init *init); unsigned long kvm_arm_num_regs(struct kvm_vcpu *vcpu); int kvm_arm_copy_reg_indices(struct kvm_vcpu *vcpu, u64 __user *indices); int kvm_arm_get_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg); int kvm_arm_set_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg); unsigned long kvm_call_hyp(void *hypfn, ...); void force_vm_exit(const cpumask_t *mask); #define KVM_ARCH_WANT_MMU_NOTIFIER int kvm_unmap_hva(struct kvm *kvm, unsigned long hva); int kvm_unmap_hva_range(struct kvm *kvm, unsigned long start, unsigned long end); void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte); unsigned long kvm_arm_num_regs(struct kvm_vcpu *vcpu); int kvm_arm_copy_reg_indices(struct kvm_vcpu *vcpu, u64 __user *indices); int kvm_age_hva(struct kvm *kvm, unsigned long start, unsigned long end); int kvm_test_age_hva(struct kvm *kvm, unsigned long hva); struct kvm_vcpu *kvm_arm_get_running_vcpu(void); struct kvm_vcpu __percpu **kvm_get_running_vcpus(void); void kvm_arm_halt_guest(struct kvm *kvm); void kvm_arm_resume_guest(struct kvm *kvm); int kvm_arm_copy_coproc_indices(struct kvm_vcpu *vcpu, u64 __user *uindices); unsigned long kvm_arm_num_coproc_regs(struct kvm_vcpu *vcpu); int kvm_arm_coproc_get_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *); int kvm_arm_coproc_set_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *); int handle_exit(struct kvm_vcpu *vcpu, struct kvm_run *run, int exception_index); static inline void handle_exit_early(struct kvm_vcpu *vcpu, struct kvm_run *run, int exception_index) {} static inline void __cpu_init_hyp_mode(phys_addr_t pgd_ptr, unsigned long hyp_stack_ptr, unsigned long vector_ptr) { /* * Call initialization code, and switch to the full blown HYP * code. The init code doesn't need to preserve these * registers as r0-r3 are already callee saved according to * the AAPCS. * Note that we slightly misuse the prototype by casting the * stack pointer to a void *. * The PGDs are always passed as the third argument, in order * to be passed into r2-r3 to the init code (yes, this is * compliant with the PCS!). */ kvm_call_hyp((void*)hyp_stack_ptr, vector_ptr, pgd_ptr); } static inline void __cpu_init_stage2(void) { kvm_call_hyp(__init_stage2_translation); } static inline int kvm_arch_dev_ioctl_check_extension(struct kvm *kvm, long ext) { return 0; } int kvm_perf_init(void); int kvm_perf_teardown(void); void kvm_mmu_wp_memory_region(struct kvm *kvm, int slot); struct kvm_vcpu *kvm_mpidr_to_vcpu(struct kvm *kvm, unsigned long mpidr); static inline void kvm_arch_hardware_unsetup(void) {} static inline void kvm_arch_sync_events(struct kvm *kvm) {} static inline void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) {} static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {} static inline void kvm_arch_vcpu_block_finish(struct kvm_vcpu *vcpu) {} static inline void kvm_arm_init_debug(void) {} static inline void kvm_arm_setup_debug(struct kvm_vcpu *vcpu) {} static inline void kvm_arm_clear_debug(struct kvm_vcpu *vcpu) {} static inline void kvm_arm_reset_debug_ptr(struct kvm_vcpu *vcpu) {} static inline bool kvm_arm_handle_step_debug(struct kvm_vcpu *vcpu, struct kvm_run *run) { return false; } int kvm_arm_vcpu_arch_set_attr(struct kvm_vcpu *vcpu, struct kvm_device_attr *attr); int kvm_arm_vcpu_arch_get_attr(struct kvm_vcpu *vcpu, struct kvm_device_attr *attr); int kvm_arm_vcpu_arch_has_attr(struct kvm_vcpu *vcpu, struct kvm_device_attr *attr); /* All host FP/SIMD state is restored on guest exit, so nothing to save: */ static inline void kvm_fpsimd_flush_cpu_state(void) {} static inline void kvm_arm_vhe_guest_enter(void) {} static inline void kvm_arm_vhe_guest_exit(void) {} static inline bool kvm_arm_harden_branch_predictor(void) { switch(read_cpuid_part()) { #ifdef CONFIG_HARDEN_BRANCH_PREDICTOR case ARM_CPU_PART_BRAHMA_B15: case ARM_CPU_PART_CORTEX_A12: case ARM_CPU_PART_CORTEX_A15: case ARM_CPU_PART_CORTEX_A17: return true; #endif default: return false; } } #define KVM_SSBD_UNKNOWN -1 #define KVM_SSBD_FORCE_DISABLE 0 #define KVM_SSBD_KERNEL 1 #define KVM_SSBD_FORCE_ENABLE 2 #define KVM_SSBD_MITIGATED 3 static inline int kvm_arm_have_ssbd(void) { /* No way to detect it yet, pretend it is not there. */ return KVM_SSBD_UNKNOWN; } static inline int kvm_arm_get_spectre_bhb_state(void) { /* 32bit guests don't need firmware for this */ return SPECTRE_VULNERABLE; /* aka SMCCC_RET_NOT_SUPPORTED */ } #endif /* __ARM_KVM_HOST_H__ */
Name | Type | Size | Permission | Actions |
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hardware | Folder | 0755 |
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mach | Folder | 0755 |
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xen | Folder | 0755 |
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Kbuild | File | 568 B | 0644 |
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arch_gicv3.h | File | 9.05 KB | 0644 |
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arch_timer.h | File | 2.48 KB | 0644 |
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arm-cci.h | File | 1.05 KB | 0644 |
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asm-offsets.h | File | 35 B | 0644 |
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assembler.h | File | 10.46 KB | 0644 |
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atomic.h | File | 13.22 KB | 0644 |
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auxvec.h | File | 29 B | 0644 |
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bL_switcher.h | File | 2.28 KB | 0644 |
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barrier.h | File | 2.84 KB | 0644 |
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bitops.h | File | 8.62 KB | 0644 |
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bitrev.h | File | 451 B | 0644 |
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bug.h | File | 2.46 KB | 0644 |
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bugs.h | File | 546 B | 0644 |
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cache.h | File | 813 B | 0644 |
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cacheflush.h | File | 15.54 KB | 0644 |
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cachetype.h | File | 2.71 KB | 0644 |
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checksum.h | File | 3.71 KB | 0644 |
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clocksource.h | File | 153 B | 0644 |
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cmpxchg.h | File | 6.14 KB | 0644 |
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compiler.h | File | 978 B | 0644 |
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cp15.h | File | 3.84 KB | 0644 |
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cpu.h | File | 533 B | 0644 |
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cpufeature.h | File | 1.4 KB | 0644 |
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cpuidle.h | File | 1.33 KB | 0644 |
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cputype.h | File | 8.42 KB | 0644 |
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cti.h | File | 3.62 KB | 0644 |
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dcc.h | File | 1.01 KB | 0644 |
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delay.h | File | 2.83 KB | 0644 |
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device.h | File | 771 B | 0644 |
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div64.h | File | 3.17 KB | 0644 |
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dma-contiguous.h | File | 265 B | 0644 |
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dma-iommu.h | File | 1.01 KB | 0644 |
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dma-mapping.h | File | 7.44 KB | 0644 |
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dma.h | File | 4.18 KB | 0644 |
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dmi.h | File | 528 B | 0644 |
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domain.h | File | 3.65 KB | 0644 |
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ecard.h | File | 5.98 KB | 0644 |
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edac.h | File | 1.51 KB | 0644 |
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efi.h | File | 3.04 KB | 0644 |
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elf.h | File | 4.52 KB | 0644 |
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entry-macro-multi.S | File | 726 B | 0644 |
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exception.h | File | 571 B | 0644 |
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fb.h | File | 375 B | 0644 |
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fiq.h | File | 1.36 KB | 0644 |
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firmware.h | File | 1.82 KB | 0644 |
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fixmap.h | File | 1.84 KB | 0644 |
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flat.h | File | 915 B | 0644 |
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floppy.h | File | 3.61 KB | 0644 |
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fncpy.h | File | 3.08 KB | 0644 |
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fpstate.h | File | 1.73 KB | 0644 |
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ftrace.h | File | 1.92 KB | 0644 |
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futex.h | File | 4.24 KB | 0644 |
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glue-cache.h | File | 3.51 KB | 0644 |
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glue-df.h | File | 2.2 KB | 0644 |
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glue-pf.h | File | 1.12 KB | 0644 |
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glue-proc.h | File | 4.46 KB | 0644 |
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glue.h | File | 759 B | 0644 |
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gpio.h | File | 693 B | 0644 |
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hardirq.h | File | 803 B | 0644 |
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highmem.h | File | 2.15 KB | 0644 |
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hugetlb-3level.h | File | 2.03 KB | 0644 |
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hugetlb.h | File | 1.78 KB | 0644 |
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hw_breakpoint.h | File | 3.53 KB | 0644 |
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hw_irq.h | File | 349 B | 0644 |
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hwcap.h | File | 378 B | 0644 |
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hypervisor.h | File | 140 B | 0644 |
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ide.h | File | 566 B | 0644 |
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idmap.h | File | 355 B | 0644 |
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insn.h | File | 636 B | 0644 |
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io.h | File | 15.96 KB | 0644 |
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irq.h | File | 1015 B | 0644 |
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irq_work.h | File | 234 B | 0644 |
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irqflags.h | File | 3.88 KB | 0644 |
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jump_label.h | File | 1009 B | 0644 |
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kexec-internal.h | File | 272 B | 0644 |
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kexec.h | File | 2.3 KB | 0644 |
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kgdb.h | File | 2.72 KB | 0644 |
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kmap_types.h | File | 190 B | 0644 |
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kprobes.h | File | 2.65 KB | 0644 |
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kvm_arm.h | File | 7.6 KB | 0644 |
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kvm_asm.h | File | 2.84 KB | 0644 |
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kvm_coproc.h | File | 1.99 KB | 0644 |
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kvm_emulate.h | File | 7.84 KB | 0644 |
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kvm_host.h | File | 10.31 KB | 0644 |
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kvm_hyp.h | File | 4.49 KB | 0644 |
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kvm_mmio.h | File | 1.34 KB | 0644 |
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kvm_mmu.h | File | 7.27 KB | 0644 |
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limits.h | File | 166 B | 0644 |
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linkage.h | File | 216 B | 0644 |
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mc146818rtc.h | File | 720 B | 0644 |
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mcpm.h | File | 11.92 KB | 0644 |
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mcs_spinlock.h | File | 570 B | 0644 |
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memblock.h | File | 248 B | 0644 |
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memory.h | File | 9.95 KB | 0644 |
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mmu.h | File | 953 B | 0644 |
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mmu_context.h | File | 3.94 KB | 0644 |
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module.h | File | 1.57 KB | 0644 |
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mpu.h | File | 2.15 KB | 0644 |
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mtd-xip.h | File | 666 B | 0644 |
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neon.h | File | 1.16 KB | 0644 |
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nwflash.h | File | 252 B | 0644 |
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opcodes-sec.h | File | 742 B | 0644 |
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opcodes-virt.h | File | 1.32 KB | 0644 |
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opcodes.h | File | 8.07 KB | 0644 |
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outercache.h | File | 3.78 KB | 0644 |
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page-nommu.h | File | 957 B | 0644 |
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page.h | File | 3.61 KB | 0644 |
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paravirt.h | File | 454 B | 0644 |
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patch.h | File | 438 B | 0644 |
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pci.h | File | 956 B | 0644 |
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percpu.h | File | 1.56 KB | 0644 |
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perf_event.h | File | 857 B | 0644 |
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pgalloc.h | File | 3.79 KB | 0644 |
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pgtable-2level-hwdef.h | File | 3.45 KB | 0644 |
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pgtable-2level-types.h | File | 1.84 KB | 0644 |
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pgtable-2level.h | File | 8.51 KB | 0644 |
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pgtable-3level-hwdef.h | File | 3.95 KB | 0644 |
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pgtable-3level-types.h | File | 1.89 KB | 0644 |
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pgtable-3level.h | File | 9.54 KB | 0644 |
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pgtable-hwdef.h | File | 467 B | 0644 |
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pgtable-nommu.h | File | 2.51 KB | 0644 |
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pgtable.h | File | 11.71 KB | 0644 |
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probes.h | File | 1.73 KB | 0644 |
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proc-fns.h | File | 4.79 KB | 0644 |
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processor.h | File | 3.4 KB | 0644 |
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procinfo.h | File | 1.27 KB | 0644 |
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prom.h | File | 715 B | 0644 |
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psci.h | File | 771 B | 0644 |
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ptrace.h | File | 4.89 KB | 0644 |
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sections.h | File | 189 B | 0644 |
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set_memory.h | File | 1.04 KB | 0644 |
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setup.h | File | 934 B | 0644 |
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shmparam.h | File | 419 B | 0644 |
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signal.h | File | 500 B | 0644 |
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smp.h | File | 3.1 KB | 0644 |
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smp_plat.h | File | 2.48 KB | 0644 |
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smp_scu.h | File | 1.32 KB | 0644 |
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smp_twd.h | File | 908 B | 0644 |
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sparsemem.h | File | 716 B | 0644 |
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spectre.h | File | 906 B | 0644 |
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spinlock.h | File | 5.49 KB | 0644 |
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spinlock_types.h | File | 541 B | 0644 |
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stackprotector.h | File | 1.09 KB | 0644 |
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stacktrace.h | File | 742 B | 0644 |
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stage2_pgtable.h | File | 2.12 KB | 0644 |
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string.h | File | 1.43 KB | 0644 |
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suspend.h | File | 369 B | 0644 |
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swab.h | File | 1005 B | 0644 |
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switch_to.h | File | 1.03 KB | 0644 |
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sync_bitops.h | File | 1.03 KB | 0644 |
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syscall.h | File | 2.48 KB | 0644 |
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system_info.h | File | 763 B | 0644 |
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system_misc.h | File | 1.14 KB | 0644 |
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tcm.h | File | 937 B | 0644 |
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therm.h | File | 655 B | 0644 |
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thread_info.h | File | 5.2 KB | 0644 |
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thread_notify.h | File | 1.2 KB | 0644 |
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timex.h | File | 577 B | 0644 |
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tlb.h | File | 7.37 KB | 0644 |
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tlbflush.h | File | 17.88 KB | 0644 |
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tls.h | File | 3.09 KB | 0644 |
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topology.h | File | 1.18 KB | 0644 |
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traps.h | File | 1.17 KB | 0644 |
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trusted_foundations.h | File | 2.29 KB | 0644 |
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uaccess-asm.h | File | 2.83 KB | 0644 |
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uaccess.h | File | 16.22 KB | 0644 |
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ucontext.h | File | 2.98 KB | 0644 |
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unaligned.h | File | 846 B | 0644 |
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unified.h | File | 1.61 KB | 0644 |
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unistd.h | File | 1.68 KB | 0644 |
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unwind.h | File | 1.71 KB | 0644 |
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uprobes.h | File | 1.07 KB | 0644 |
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user.h | File | 4.2 KB | 0644 |
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v7m.h | File | 2.93 KB | 0644 |
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vdso.h | File | 507 B | 0644 |
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vdso_datapage.h | File | 1.69 KB | 0644 |
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vfp.h | File | 2.86 KB | 0644 |
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vfpmacros.h | File | 2.1 KB | 0644 |
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vga.h | File | 305 B | 0644 |
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virt.h | File | 2.9 KB | 0644 |
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word-at-a-time.h | File | 2.08 KB | 0644 |
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xor.h | File | 5.22 KB | 0644 |
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