127 lines
4.4 KiB
C
127 lines
4.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/*
|
|
* Copyright (C) 2015 - ARM Ltd
|
|
* Author: Marc Zyngier <marc.zyngier@arm.com>
|
|
*/
|
|
|
|
#ifndef __ARM64_KVM_HYP_H__
|
|
#define __ARM64_KVM_HYP_H__
|
|
|
|
#include <linux/compiler.h>
|
|
#include <linux/kvm_host.h>
|
|
#include <asm/alternative.h>
|
|
#include <asm/sysreg.h>
|
|
|
|
DECLARE_PER_CPU(struct kvm_cpu_context, kvm_hyp_ctxt);
|
|
DECLARE_PER_CPU(unsigned long, kvm_hyp_vector);
|
|
DECLARE_PER_CPU(struct kvm_nvhe_init_params, kvm_init_params);
|
|
|
|
#define read_sysreg_elx(r,nvh,vh) \
|
|
({ \
|
|
u64 reg; \
|
|
asm volatile(ALTERNATIVE(__mrs_s("%0", r##nvh), \
|
|
__mrs_s("%0", r##vh), \
|
|
ARM64_HAS_VIRT_HOST_EXTN) \
|
|
: "=r" (reg)); \
|
|
reg; \
|
|
})
|
|
|
|
#define write_sysreg_elx(v,r,nvh,vh) \
|
|
do { \
|
|
u64 __val = (u64)(v); \
|
|
asm volatile(ALTERNATIVE(__msr_s(r##nvh, "%x0"), \
|
|
__msr_s(r##vh, "%x0"), \
|
|
ARM64_HAS_VIRT_HOST_EXTN) \
|
|
: : "rZ" (__val)); \
|
|
} while (0)
|
|
|
|
/*
|
|
* Unified accessors for registers that have a different encoding
|
|
* between VHE and non-VHE. They must be specified without their "ELx"
|
|
* encoding, but with the SYS_ prefix, as defined in asm/sysreg.h.
|
|
*/
|
|
|
|
#define read_sysreg_el0(r) read_sysreg_elx(r, _EL0, _EL02)
|
|
#define write_sysreg_el0(v,r) write_sysreg_elx(v, r, _EL0, _EL02)
|
|
#define read_sysreg_el1(r) read_sysreg_elx(r, _EL1, _EL12)
|
|
#define write_sysreg_el1(v,r) write_sysreg_elx(v, r, _EL1, _EL12)
|
|
#define read_sysreg_el2(r) read_sysreg_elx(r, _EL2, _EL1)
|
|
#define write_sysreg_el2(v,r) write_sysreg_elx(v, r, _EL2, _EL1)
|
|
|
|
/*
|
|
* Without an __arch_swab32(), we fall back to ___constant_swab32(), but the
|
|
* static inline can allow the compiler to out-of-line this. KVM always wants
|
|
* the macro version as its always inlined.
|
|
*/
|
|
#define __kvm_swab32(x) ___constant_swab32(x)
|
|
|
|
int __vgic_v2_perform_cpuif_access(struct kvm_vcpu *vcpu);
|
|
|
|
void __vgic_v3_save_state(struct vgic_v3_cpu_if *cpu_if);
|
|
void __vgic_v3_restore_state(struct vgic_v3_cpu_if *cpu_if);
|
|
void __vgic_v3_activate_traps(struct vgic_v3_cpu_if *cpu_if);
|
|
void __vgic_v3_deactivate_traps(struct vgic_v3_cpu_if *cpu_if);
|
|
void __vgic_v3_save_aprs(struct vgic_v3_cpu_if *cpu_if);
|
|
void __vgic_v3_restore_aprs(struct vgic_v3_cpu_if *cpu_if);
|
|
int __vgic_v3_perform_cpuif_access(struct kvm_vcpu *vcpu);
|
|
|
|
#ifdef __KVM_NVHE_HYPERVISOR__
|
|
void __timer_enable_traps(struct kvm_vcpu *vcpu);
|
|
void __timer_disable_traps(struct kvm_vcpu *vcpu);
|
|
#endif
|
|
|
|
#ifdef __KVM_NVHE_HYPERVISOR__
|
|
void __sysreg_save_state_nvhe(struct kvm_cpu_context *ctxt);
|
|
void __sysreg_restore_state_nvhe(struct kvm_cpu_context *ctxt);
|
|
#else
|
|
void sysreg_save_host_state_vhe(struct kvm_cpu_context *ctxt);
|
|
void sysreg_restore_host_state_vhe(struct kvm_cpu_context *ctxt);
|
|
void sysreg_save_guest_state_vhe(struct kvm_cpu_context *ctxt);
|
|
void sysreg_restore_guest_state_vhe(struct kvm_cpu_context *ctxt);
|
|
#endif
|
|
|
|
void __debug_switch_to_guest(struct kvm_vcpu *vcpu);
|
|
void __debug_switch_to_host(struct kvm_vcpu *vcpu);
|
|
|
|
#ifdef __KVM_NVHE_HYPERVISOR__
|
|
void __debug_save_host_buffers_nvhe(struct kvm_vcpu *vcpu);
|
|
void __debug_restore_host_buffers_nvhe(struct kvm_vcpu *vcpu);
|
|
#endif
|
|
|
|
void __fpsimd_save_state(struct user_fpsimd_state *fp_regs);
|
|
void __fpsimd_restore_state(struct user_fpsimd_state *fp_regs);
|
|
void __sve_restore_state(void *sve_pffr, u32 *fpsr);
|
|
|
|
#ifndef __KVM_NVHE_HYPERVISOR__
|
|
void activate_traps_vhe_load(struct kvm_vcpu *vcpu);
|
|
void deactivate_traps_vhe_put(struct kvm_vcpu *vcpu);
|
|
#endif
|
|
|
|
u64 __guest_enter(struct kvm_vcpu *vcpu);
|
|
|
|
bool kvm_host_psci_handler(struct kvm_cpu_context *host_ctxt);
|
|
|
|
#ifdef __KVM_NVHE_HYPERVISOR__
|
|
void __noreturn __hyp_do_panic(struct kvm_cpu_context *host_ctxt, u64 spsr,
|
|
u64 elr, u64 par);
|
|
#endif
|
|
|
|
#ifdef __KVM_NVHE_HYPERVISOR__
|
|
void __pkvm_init_switch_pgd(phys_addr_t phys, unsigned long size,
|
|
phys_addr_t pgd, void *sp, void *cont_fn);
|
|
int __pkvm_init(phys_addr_t phys, unsigned long size, unsigned long nr_cpus,
|
|
unsigned long *per_cpu_base, u32 hyp_va_bits);
|
|
void __noreturn __host_enter(struct kvm_cpu_context *host_ctxt);
|
|
#endif
|
|
|
|
extern u64 kvm_nvhe_sym(id_aa64pfr0_el1_sys_val);
|
|
extern u64 kvm_nvhe_sym(id_aa64pfr1_el1_sys_val);
|
|
extern u64 kvm_nvhe_sym(id_aa64isar0_el1_sys_val);
|
|
extern u64 kvm_nvhe_sym(id_aa64isar1_el1_sys_val);
|
|
extern u64 kvm_nvhe_sym(id_aa64isar2_el1_sys_val);
|
|
extern u64 kvm_nvhe_sym(id_aa64mmfr0_el1_sys_val);
|
|
extern u64 kvm_nvhe_sym(id_aa64mmfr1_el1_sys_val);
|
|
extern u64 kvm_nvhe_sym(id_aa64mmfr2_el1_sys_val);
|
|
|
|
#endif /* __ARM64_KVM_HYP_H__ */
|