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 <christoffer.dall@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>

4 files changed, 20 insertions, 9 deletions

diff --git a/arch/arm/kvm/emulate.c b/arch/arm/kvm/emulate.c
index ee161b1..a494def 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 5fa69d7..86e26fb 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 b9d9531..e0943cb 100644
--- a/arch/arm/kvm/interrupts_head.S
+++ b/arch/arm/kvm/interrupts_head.S
@@ -1,6 +1,17 @@
 #include <linux/irqchip/arm-gic.h>
 #include <asm/assembler.h>
 
+/* 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 eeb8585..0048b5a 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);