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arm64: KVM: kvm_arch and kvm_vcpu_arch definitions
Provide the architecture dependent structures for VM and vcpu abstractions. Reviewed-by: Christopher Covington <cov@codeaurora.org> Reviewed-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
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Marc Zyngier
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186
arch/arm64/include/asm/kvm_host.h
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186
arch/arm64/include/asm/kvm_host.h
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/*
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* Copyright (C) 2012,2013 - ARM Ltd
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* Author: Marc Zyngier <marc.zyngier@arm.com>
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*
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* Derived from arch/arm/include/asm/kvm_host.h:
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* Copyright (C) 2012 - Virtual Open Systems and Columbia University
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* Author: Christoffer Dall <c.dall@virtualopensystems.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __ARM64_KVM_HOST_H__
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#define __ARM64_KVM_HOST_H__
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#include <asm/kvm.h>
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#include <asm/kvm_asm.h>
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#include <asm/kvm_mmio.h>
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#define KVM_MAX_VCPUS 4
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#define KVM_USER_MEM_SLOTS 32
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#define KVM_PRIVATE_MEM_SLOTS 4
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#define KVM_COALESCED_MMIO_PAGE_OFFSET 1
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#include <kvm/arm_vgic.h>
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#include <kvm/arm_arch_timer.h>
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#define KVM_VCPU_MAX_FEATURES 0
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/* We don't currently support large pages. */
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#define KVM_HPAGE_GFN_SHIFT(x) 0
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#define KVM_NR_PAGE_SIZES 1
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#define KVM_PAGES_PER_HPAGE(x) (1UL<<31)
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struct kvm_vcpu;
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int kvm_target_cpu(void);
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int kvm_reset_vcpu(struct kvm_vcpu *vcpu);
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int kvm_arch_dev_ioctl_check_extension(long ext);
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struct kvm_arch {
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/* The VMID generation used for the virt. memory system */
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u64 vmid_gen;
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u32 vmid;
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/* 1-level 2nd stage table and lock */
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spinlock_t pgd_lock;
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pgd_t *pgd;
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/* VTTBR value associated with above pgd and vmid */
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u64 vttbr;
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/* Interrupt controller */
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struct vgic_dist vgic;
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/* Timer */
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struct arch_timer_kvm timer;
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};
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#define KVM_NR_MEM_OBJS 40
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/*
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* We don't want allocation failures within the mmu code, so we preallocate
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* enough memory for a single page fault in a cache.
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*/
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struct kvm_mmu_memory_cache {
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int nobjs;
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void *objects[KVM_NR_MEM_OBJS];
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};
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struct kvm_vcpu_fault_info {
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u32 esr_el2; /* Hyp Syndrom Register */
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u64 far_el2; /* Hyp Fault Address Register */
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u64 hpfar_el2; /* Hyp IPA Fault Address Register */
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};
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struct kvm_cpu_context {
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struct kvm_regs gp_regs;
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u64 sys_regs[NR_SYS_REGS];
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};
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typedef struct kvm_cpu_context kvm_cpu_context_t;
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struct kvm_vcpu_arch {
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struct kvm_cpu_context ctxt;
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/* HYP configuration */
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u64 hcr_el2;
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/* Exception Information */
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struct kvm_vcpu_fault_info fault;
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/* Pointer to host CPU context */
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kvm_cpu_context_t *host_cpu_context;
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/* VGIC state */
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struct vgic_cpu vgic_cpu;
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struct arch_timer_cpu timer_cpu;
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/*
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* Anything that is not used directly from assembly code goes
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* here.
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*/
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/* dcache set/way operation pending */
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int last_pcpu;
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cpumask_t require_dcache_flush;
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/* Don't run the guest */
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bool pause;
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/* IO related fields */
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struct kvm_decode mmio_decode;
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/* Interrupt related fields */
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u64 irq_lines; /* IRQ and FIQ levels */
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/* Cache some mmu pages needed inside spinlock regions */
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struct kvm_mmu_memory_cache mmu_page_cache;
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/* Target CPU and feature flags */
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u32 target;
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DECLARE_BITMAP(features, KVM_VCPU_MAX_FEATURES);
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/* Detect first run of a vcpu */
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bool has_run_once;
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};
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#define vcpu_gp_regs(v) (&(v)->arch.ctxt.gp_regs)
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#define vcpu_sys_reg(v,r) ((v)->arch.ctxt.sys_regs[(r)])
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#define vcpu_cp15(v,r) ((v)->arch.ctxt.cp15[(r)])
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struct kvm_vm_stat {
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u32 remote_tlb_flush;
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};
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struct kvm_vcpu_stat {
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u32 halt_wakeup;
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};
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struct kvm_vcpu_init;
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int kvm_vcpu_set_target(struct kvm_vcpu *vcpu,
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const struct kvm_vcpu_init *init);
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unsigned long kvm_arm_num_regs(struct kvm_vcpu *vcpu);
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int kvm_arm_copy_reg_indices(struct kvm_vcpu *vcpu, u64 __user *indices);
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struct kvm_one_reg;
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int kvm_arm_get_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg);
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int kvm_arm_set_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg);
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#define KVM_ARCH_WANT_MMU_NOTIFIER
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struct kvm;
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int kvm_unmap_hva(struct kvm *kvm, unsigned long hva);
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int kvm_unmap_hva_range(struct kvm *kvm,
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unsigned long start, unsigned long end);
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void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte);
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/* We do not have shadow page tables, hence the empty hooks */
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static inline int kvm_age_hva(struct kvm *kvm, unsigned long hva)
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{
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return 0;
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}
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static inline int kvm_test_age_hva(struct kvm *kvm, unsigned long hva)
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{
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return 0;
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}
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struct kvm_vcpu *kvm_arm_get_running_vcpu(void);
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struct kvm_vcpu __percpu **kvm_get_running_vcpus(void);
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u64 kvm_call_hyp(void *hypfn, ...);
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int handle_exit(struct kvm_vcpu *vcpu, struct kvm_run *run,
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int exception_index);
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int kvm_perf_init(void);
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int kvm_perf_teardown(void);
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#endif /* __ARM64_KVM_HOST_H__ */
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