Release 4.11 arch/arm/include/asm/kvm_host.h
/*
* 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/kvm.h>
#include <asm/kvm_asm.h>
#include <asm/kvm_mmio.h>
#include <asm/fpstate.h>
#include <kvm/arm_arch_timer.h>
#define __KVM_HAVE_ARCH_INTC_INITIALIZED
#define KVM_USER_MEM_SLOTS 32
#define KVM_COALESCED_MMIO_PAGE_OFFSET 1
#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_VCPU_EXIT 8
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;
};
#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 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;
/* 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);
/* We do not have shadow page tables, hence the empty hooks */
static inline void kvm_arch_mmu_notifier_invalidate_page(struct kvm *kvm,
unsigned long address)
{
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Tang Chen | 15 | 100.00% | 1 | 100.00% |
| Total | 15 | 100.00% | 1 | 100.00% |
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);
void kvm_arm_halt_vcpu(struct kvm_vcpu *vcpu);
void kvm_arm_resume_vcpu(struct kvm_vcpu *vcpu);
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 __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);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Marc Zyngier | 32 | 100.00% | 4 | 100.00% |
| Total | 32 | 100.00% | 4 | 100.00% |
static inline void __cpu_init_stage2(void)
{
kvm_call_hyp(__init_stage2_translation);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Marc Zyngier | 14 | 100.00% | 2 | 100.00% |
| Total | 14 | 100.00% | 2 | 100.00% |
static inline void __cpu_reset_hyp_mode(unsigned long vector_ptr,
phys_addr_t phys_idmap_start)
{
kvm_call_hyp((void *)virt_to_idmap(__kvm_hyp_reset), vector_ptr);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Marc Zyngier | 18 | 64.29% | 1 | 50.00% |
| AKASHI Takahiro | 10 | 35.71% | 1 | 50.00% |
| Total | 28 | 100.00% | 2 | 100.00% |
static inline int kvm_arch_dev_ioctl_check_extension(struct kvm *kvm, long ext)
{
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Marc Zyngier | 13 | 72.22% | 1 | 50.00% |
| Andre Przywara | 5 | 27.78% | 1 | 50.00% |
| Total | 18 | 100.00% | 2 | 100.00% |
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) {}
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static inline void kvm_arch_sync_events(struct kvm *kvm) {}
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static inline void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) {}
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static inline void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) {}
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static inline void kvm_arch_vcpu_block_finish(struct kvm_vcpu *vcpu) {}
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| Christian Bornträger | 11 | 100.00% | 1 | 100.00% |
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static inline void kvm_arm_init_debug(void) {}
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| Alex Bennée | 8 | 100.00% | 1 | 100.00% |
| Total | 8 | 100.00% | 1 | 100.00% |
static inline void kvm_arm_setup_debug(struct kvm_vcpu *vcpu) {}
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| Alex Bennée | 11 | 100.00% | 1 | 100.00% |
| Total | 11 | 100.00% | 1 | 100.00% |
static inline void kvm_arm_clear_debug(struct kvm_vcpu *vcpu) {}
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static inline void kvm_arm_reset_debug_ptr(struct kvm_vcpu *vcpu) {}
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static inline int kvm_arm_vcpu_arch_set_attr(struct kvm_vcpu *vcpu,
struct kvm_device_attr *attr)
{
return -ENXIO;
}
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| Shannon Zhao | 21 | 100.00% | 1 | 100.00% |
| Total | 21 | 100.00% | 1 | 100.00% |
static inline int kvm_arm_vcpu_arch_get_attr(struct kvm_vcpu *vcpu,
struct kvm_device_attr *attr)
{
return -ENXIO;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Shannon Zhao | 21 | 100.00% | 1 | 100.00% |
| Total | 21 | 100.00% | 1 | 100.00% |
static inline int kvm_arm_vcpu_arch_has_attr(struct kvm_vcpu *vcpu,
struct kvm_device_attr *attr)
{
return -ENXIO;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Shannon Zhao | 21 | 100.00% | 1 | 100.00% |
| Total | 21 | 100.00% | 1 | 100.00% |
#endif /* __ARM_KVM_HOST_H__ */
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Christoffer Dall | 379 | 35.92% | 8 | 13.11% |
| Marc Zyngier | 379 | 35.92% | 27 | 44.26% |
| Shannon Zhao | 63 | 5.97% | 1 | 1.64% |
| Radim Krčmář | 44 | 4.17% | 1 | 1.64% |
| Alex Bennée | 41 | 3.89% | 2 | 3.28% |
| Andre Przywara | 23 | 2.18% | 3 | 4.92% |
| Amit Tomar | 17 | 1.61% | 1 | 1.64% |
| Tang Chen | 15 | 1.42% | 1 | 1.64% |
| Christian Bornträger | 13 | 1.23% | 1 | 1.64% |
| Mario Smarduch | 12 | 1.14% | 1 | 1.64% |
| Vladimir Murzin | 11 | 1.04% | 1 | 1.64% |
| AKASHI Takahiro | 10 | 0.95% | 1 | 1.64% |
| Paolo Bonzini | 10 | 0.95% | 3 | 4.92% |
| Eric Auger | 9 | 0.85% | 3 | 4.92% |
| Anup Patel | 9 | 0.85% | 2 | 3.28% |
| Suraj Jitindar Singh | 6 | 0.57% | 1 | 1.64% |
| Andres Lagar-Cavilla | 5 | 0.47% | 1 | 1.64% |
| David Hildenbrand | 4 | 0.38% | 1 | 1.64% |
| Ming Lei | 4 | 0.38% | 1 | 1.64% |
| Will Deacon | 1 | 0.09% | 1 | 1.64% |
| Total | 1055 | 100.00% | 61 | 100.00% |
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