From c2a8dab507ca6f8990c12372052efc830f51dd3f Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Sun, 3 Jan 2016 11:26:01 +0000 Subject: [PATCH] ARM: KVM: Move GP registers into the CPU context structure Continuing our rework of the CPU context, we now move the GP registers into the CPU context structure. Reviewed-by: Christoffer Dall Signed-off-by: Marc Zyngier --- arch/arm/include/asm/kvm_emulate.h | 8 ++++---- arch/arm/include/asm/kvm_host.h | 3 +-- arch/arm/kernel/asm-offsets.c | 18 +++++++++--------- arch/arm/kvm/emulate.c | 12 ++++++------ arch/arm/kvm/guest.c | 4 ++-- arch/arm/kvm/interrupts_head.S | 11 +++++++++++ arch/arm/kvm/reset.c | 2 +- 7 files changed, 34 insertions(+), 24 deletions(-) diff --git a/arch/arm/include/asm/kvm_emulate.h b/arch/arm/include/asm/kvm_emulate.h index 32bb52a489d0..f710616ccadc 100644 --- a/arch/arm/include/asm/kvm_emulate.h +++ b/arch/arm/include/asm/kvm_emulate.h @@ -68,12 +68,12 @@ static inline bool vcpu_mode_is_32bit(struct kvm_vcpu *vcpu) static inline unsigned long *vcpu_pc(struct kvm_vcpu *vcpu) { - return &vcpu->arch.regs.usr_regs.ARM_pc; + return &vcpu->arch.ctxt.gp_regs.usr_regs.ARM_pc; } static inline unsigned long *vcpu_cpsr(struct kvm_vcpu *vcpu) { - return &vcpu->arch.regs.usr_regs.ARM_cpsr; + return &vcpu->arch.ctxt.gp_regs.usr_regs.ARM_cpsr; } static inline void vcpu_set_thumb(struct kvm_vcpu *vcpu) @@ -83,13 +83,13 @@ static inline void vcpu_set_thumb(struct kvm_vcpu *vcpu) static inline bool mode_has_spsr(struct kvm_vcpu *vcpu) { - unsigned long cpsr_mode = vcpu->arch.regs.usr_regs.ARM_cpsr & MODE_MASK; + unsigned long cpsr_mode = vcpu->arch.ctxt.gp_regs.usr_regs.ARM_cpsr & MODE_MASK; return (cpsr_mode > USR_MODE && cpsr_mode < SYSTEM_MODE); } static inline bool vcpu_mode_priv(struct kvm_vcpu *vcpu) { - unsigned long cpsr_mode = vcpu->arch.regs.usr_regs.ARM_cpsr & MODE_MASK; + unsigned long cpsr_mode = vcpu->arch.ctxt.gp_regs.usr_regs.ARM_cpsr & MODE_MASK; return cpsr_mode > USR_MODE;; } diff --git a/arch/arm/include/asm/kvm_host.h b/arch/arm/include/asm/kvm_host.h index 4203701cc7f4..02932ba8a653 100644 --- a/arch/arm/include/asm/kvm_host.h +++ b/arch/arm/include/asm/kvm_host.h @@ -89,6 +89,7 @@ struct kvm_vcpu_fault_info { }; struct kvm_cpu_context { + struct kvm_regs gp_regs; struct vfp_hard_struct vfp; u32 cp15[NR_CP15_REGS]; }; @@ -98,8 +99,6 @@ typedef struct kvm_cpu_context kvm_cpu_context_t; struct kvm_vcpu_arch { struct kvm_cpu_context ctxt; - struct kvm_regs regs; - int target; /* Processor target */ DECLARE_BITMAP(features, KVM_VCPU_MAX_FEATURES); diff --git a/arch/arm/kernel/asm-offsets.c b/arch/arm/kernel/asm-offsets.c index 43f8b01072c1..2f3e0b064066 100644 --- a/arch/arm/kernel/asm-offsets.c +++ b/arch/arm/kernel/asm-offsets.c @@ -176,15 +176,15 @@ int main(void) DEFINE(VCPU_HOST_CTXT, offsetof(struct kvm_vcpu, arch.host_cpu_context)); DEFINE(CPU_CTXT_VFP, offsetof(struct kvm_cpu_context, vfp)); DEFINE(CPU_CTXT_CP15, offsetof(struct kvm_cpu_context, cp15)); - DEFINE(VCPU_REGS, offsetof(struct kvm_vcpu, arch.regs)); - DEFINE(VCPU_USR_REGS, offsetof(struct kvm_vcpu, arch.regs.usr_regs)); - DEFINE(VCPU_SVC_REGS, offsetof(struct kvm_vcpu, arch.regs.svc_regs)); - DEFINE(VCPU_ABT_REGS, offsetof(struct kvm_vcpu, arch.regs.abt_regs)); - DEFINE(VCPU_UND_REGS, offsetof(struct kvm_vcpu, arch.regs.und_regs)); - DEFINE(VCPU_IRQ_REGS, offsetof(struct kvm_vcpu, arch.regs.irq_regs)); - DEFINE(VCPU_FIQ_REGS, offsetof(struct kvm_vcpu, arch.regs.fiq_regs)); - DEFINE(VCPU_PC, offsetof(struct kvm_vcpu, arch.regs.usr_regs.ARM_pc)); - DEFINE(VCPU_CPSR, offsetof(struct kvm_vcpu, arch.regs.usr_regs.ARM_cpsr)); + DEFINE(CPU_CTXT_GP_REGS, offsetof(struct kvm_cpu_context, gp_regs)); + DEFINE(GP_REGS_USR, offsetof(struct kvm_regs, usr_regs)); + DEFINE(GP_REGS_SVC, offsetof(struct kvm_regs, svc_regs)); + DEFINE(GP_REGS_ABT, offsetof(struct kvm_regs, abt_regs)); + DEFINE(GP_REGS_UND, offsetof(struct kvm_regs, und_regs)); + DEFINE(GP_REGS_IRQ, offsetof(struct kvm_regs, irq_regs)); + DEFINE(GP_REGS_FIQ, offsetof(struct kvm_regs, fiq_regs)); + DEFINE(GP_REGS_PC, offsetof(struct kvm_regs, usr_regs.ARM_pc)); + DEFINE(GP_REGS_CPSR, offsetof(struct kvm_regs, usr_regs.ARM_cpsr)); DEFINE(VCPU_HCR, offsetof(struct kvm_vcpu, arch.hcr)); DEFINE(VCPU_IRQ_LINES, offsetof(struct kvm_vcpu, arch.irq_lines)); DEFINE(VCPU_HSR, offsetof(struct kvm_vcpu, arch.fault.hsr)); diff --git a/arch/arm/kvm/emulate.c b/arch/arm/kvm/emulate.c index ee161b1c66da..a494def3f195 100644 --- a/arch/arm/kvm/emulate.c +++ b/arch/arm/kvm/emulate.c @@ -112,7 +112,7 @@ static const unsigned long vcpu_reg_offsets[VCPU_NR_MODES][15] = { */ unsigned long *vcpu_reg(struct kvm_vcpu *vcpu, u8 reg_num) { - unsigned long *reg_array = (unsigned long *)&vcpu->arch.regs; + unsigned long *reg_array = (unsigned long *)&vcpu->arch.ctxt.gp_regs; unsigned long mode = *vcpu_cpsr(vcpu) & MODE_MASK; switch (mode) { @@ -147,15 +147,15 @@ unsigned long *vcpu_spsr(struct kvm_vcpu *vcpu) unsigned long mode = *vcpu_cpsr(vcpu) & MODE_MASK; switch (mode) { case SVC_MODE: - return &vcpu->arch.regs.KVM_ARM_SVC_spsr; + return &vcpu->arch.ctxt.gp_regs.KVM_ARM_SVC_spsr; case ABT_MODE: - return &vcpu->arch.regs.KVM_ARM_ABT_spsr; + return &vcpu->arch.ctxt.gp_regs.KVM_ARM_ABT_spsr; case UND_MODE: - return &vcpu->arch.regs.KVM_ARM_UND_spsr; + return &vcpu->arch.ctxt.gp_regs.KVM_ARM_UND_spsr; case IRQ_MODE: - return &vcpu->arch.regs.KVM_ARM_IRQ_spsr; + return &vcpu->arch.ctxt.gp_regs.KVM_ARM_IRQ_spsr; case FIQ_MODE: - return &vcpu->arch.regs.KVM_ARM_FIQ_spsr; + return &vcpu->arch.ctxt.gp_regs.KVM_ARM_FIQ_spsr; default: BUG(); } diff --git a/arch/arm/kvm/guest.c b/arch/arm/kvm/guest.c index 5fa69d7bae58..86e26fbd5ba3 100644 --- a/arch/arm/kvm/guest.c +++ b/arch/arm/kvm/guest.c @@ -55,7 +55,7 @@ static u64 core_reg_offset_from_id(u64 id) static int get_core_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg) { u32 __user *uaddr = (u32 __user *)(long)reg->addr; - struct kvm_regs *regs = &vcpu->arch.regs; + struct kvm_regs *regs = &vcpu->arch.ctxt.gp_regs; u64 off; if (KVM_REG_SIZE(reg->id) != 4) @@ -72,7 +72,7 @@ static int get_core_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg) static int set_core_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg) { u32 __user *uaddr = (u32 __user *)(long)reg->addr; - struct kvm_regs *regs = &vcpu->arch.regs; + struct kvm_regs *regs = &vcpu->arch.ctxt.gp_regs; u64 off, val; if (KVM_REG_SIZE(reg->id) != 4) diff --git a/arch/arm/kvm/interrupts_head.S b/arch/arm/kvm/interrupts_head.S index b9d953158877..e0943cb80ab3 100644 --- a/arch/arm/kvm/interrupts_head.S +++ b/arch/arm/kvm/interrupts_head.S @@ -1,6 +1,17 @@ #include #include +/* Compat macro, until we get rid of this file entierely */ +#define VCPU_GP_REGS (VCPU_GUEST_CTXT + CPU_CTXT_GP_REGS) +#define VCPU_USR_REGS (VCPU_GP_REGS + GP_REGS_USR) +#define VCPU_SVC_REGS (VCPU_GP_REGS + GP_REGS_SVC) +#define VCPU_ABT_REGS (VCPU_GP_REGS + GP_REGS_ABT) +#define VCPU_UND_REGS (VCPU_GP_REGS + GP_REGS_UND) +#define VCPU_IRQ_REGS (VCPU_GP_REGS + GP_REGS_IRQ) +#define VCPU_FIQ_REGS (VCPU_GP_REGS + GP_REGS_FIQ) +#define VCPU_PC (VCPU_GP_REGS + GP_REGS_PC) +#define VCPU_CPSR (VCPU_GP_REGS + GP_REGS_CPSR) + #define VCPU_USR_REG(_reg_nr) (VCPU_USR_REGS + (_reg_nr * 4)) #define VCPU_USR_SP (VCPU_USR_REG(13)) #define VCPU_USR_LR (VCPU_USR_REG(14)) diff --git a/arch/arm/kvm/reset.c b/arch/arm/kvm/reset.c index eeb85858d6bb..0048b5a62a50 100644 --- a/arch/arm/kvm/reset.c +++ b/arch/arm/kvm/reset.c @@ -71,7 +71,7 @@ int kvm_reset_vcpu(struct kvm_vcpu *vcpu) } /* Reset core registers */ - memcpy(&vcpu->arch.regs, reset_regs, sizeof(vcpu->arch.regs)); + memcpy(&vcpu->arch.ctxt.gp_regs, reset_regs, sizeof(vcpu->arch.ctxt.gp_regs)); /* Reset CP15 registers */ kvm_reset_coprocs(vcpu);