Subject: [PATCH v2 87/94] KVM: arm64: VNCR-ize SPSR_EL1

From: Marc Zyngier <[email-masked]>
Date: Tue, 11 Feb 2020 17:49:31 +0000

As promised, let's move SPSR_EL1 to the VNCR page.

Signed-off-by: Marc Zyngier <[email-masked]>
---
 arch/arm64/include/asm/kvm_emulate.h | 4 ++--
 arch/arm64/include/asm/kvm_host.h    | 2 +-
 arch/arm64/kvm/guest.c               | 2 +-
 arch/arm64/kvm/hyp/sysreg-sr.c       | 4 ++--
 arch/arm64/kvm/regmap.c              | 4 ++--
 arch/arm64/kvm/sys_regs.c            | 4 ++--
 6 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/arch/arm64/include/asm/kvm_emulate.h b/arch/arm64/include/asm/kvm_emulate.h
index eed8bd48e60c..6df684e1790e 100644
--- a/arch/arm64/include/asm/kvm_emulate.h
+++ b/arch/arm64/include/asm/kvm_emulate.h
@@ -327,7 +327,7 @@ static inline unsigned long vcpu_read_spsr(const struct kvm_vcpu *vcpu)
 	if (vcpu->arch.sysregs_loaded_on_cpu)
 		return read_sysreg_el1(SYS_SPSR);
 	else
-		return vcpu->arch.ctxt.spsr_el1;
+		return __vcpu_sys_reg(vcpu, SPSR_EL1);
 }
 
 static inline void vcpu_write_spsr(struct kvm_vcpu *vcpu, unsigned long v)
@@ -345,7 +345,7 @@ static inline void vcpu_write_spsr(struct kvm_vcpu *vcpu, unsigned long v)
 	if (vcpu->arch.sysregs_loaded_on_cpu)
 		write_sysreg_el1(v, SYS_SPSR);
 	else
-		vcpu->arch.ctxt.spsr_el1 = v;
+		__vcpu_sys_reg(vcpu, SPSR_EL1) = v;
 }
 
 /*
diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h
index 111597123c17..657c2c5d1a39 100644
--- a/arch/arm64/include/asm/kvm_host.h
+++ b/arch/arm64/include/asm/kvm_host.h
@@ -266,6 +266,7 @@ enum vcpu_sysreg {
 	VNCR(MDSCR_EL1),/* Monitor Debug System Control Register */
 	VNCR(ELR_EL1),
 	VNCR(SP_EL1),
+	VNCR(SPSR_EL1),
 	VNCR(VPIDR_EL2),/* Virtualization Processor ID Register */
 	VNCR(VMPIDR_EL2),/* Virtualization Multiprocessor ID Register */
 	VNCR(HCR_EL2),	/* Hypervisor Configuration Register */
@@ -336,7 +337,6 @@ enum vcpu_sysreg {
 struct kvm_cpu_context {
 	struct user_pt_regs regs;	/* sp = sp_el0 */
 
-	u64	spsr_el1;		/* aka spsr_svc */
 	u64	spsr_abt;
 	u64	spsr_und;
 	u64	spsr_irq;
diff --git a/arch/arm64/kvm/guest.c b/arch/arm64/kvm/guest.c
index 9710fe55c5dd..e295368a13f2 100644
--- a/arch/arm64/kvm/guest.c
+++ b/arch/arm64/kvm/guest.c
@@ -131,7 +131,7 @@ static void *core_reg_addr(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg)
 		return __vcpu_elr_el1(vcpu);
 
 	case KVM_REG_ARM_CORE_REG(spsr[KVM_SPSR_EL1]):
-		return &vcpu->arch.ctxt.spsr_el1;
+		return __ctxt_sys_reg(&vcpu->arch.ctxt, SPSR_EL1);
 
 	case KVM_REG_ARM_CORE_REG(spsr[KVM_SPSR_ABT]):
 		return &vcpu->arch.ctxt.spsr_abt;
diff --git a/arch/arm64/kvm/hyp/sysreg-sr.c b/arch/arm64/kvm/hyp/sysreg-sr.c
index b009afd87322..eaf78e9b3238 100644
--- a/arch/arm64/kvm/hyp/sysreg-sr.c
+++ b/arch/arm64/kvm/hyp/sysreg-sr.c
@@ -60,7 +60,7 @@ static void __hyp_text __sysreg_save_vel1_state(struct kvm_cpu_context *ctxt)
 
 	ctxt_sys_reg(ctxt, SP_EL1)	= read_sysreg(sp_el1);
 	ctxt_sys_reg(ctxt, ELR_EL1)	= read_sysreg_el1(SYS_ELR);
-	ctxt->spsr_el1			= read_sysreg_el1(SYS_SPSR);
+	ctxt_sys_reg(ctxt, SPSR_EL1)	= read_sysreg_el1(SYS_SPSR);
 }
 
 static void __sysreg_save_vel2_state(struct kvm_cpu_context *ctxt)
@@ -325,7 +325,7 @@ static void __hyp_text __sysreg_restore_vel1_state(struct kvm_cpu_context *ctxt)
 
 	write_sysreg(ctxt_sys_reg(ctxt, SP_EL1),	sp_el1);
 	write_sysreg_el1(ctxt_sys_reg(ctxt, ELR_EL1),	SYS_ELR);
-	write_sysreg_el1(ctxt->spsr_el1,		SYS_SPSR);
+	write_sysreg_el1(ctxt_sys_reg(ctxt, SPSR_EL1),	SYS_SPSR);
 }
 
 static void __hyp_text __sysreg_restore_el1_state(struct kvm_cpu_context *ctxt)
diff --git a/arch/arm64/kvm/regmap.c b/arch/arm64/kvm/regmap.c
index 97c110810527..accc1d5fba61 100644
--- a/arch/arm64/kvm/regmap.c
+++ b/arch/arm64/kvm/regmap.c
@@ -150,7 +150,7 @@ unsigned long vcpu_read_spsr32(const struct kvm_vcpu *vcpu)
 	if (!vcpu->arch.sysregs_loaded_on_cpu) {
 		switch (spsr_idx) {
 		case KVM_SPSR_SVC:
-			return vcpu->arch.ctxt.spsr_el1;
+			return __vcpu_sys_reg(vcpu, SPSR_EL1);
 		case KVM_SPSR_ABT:
 			return vcpu->arch.ctxt.spsr_abt;
 		case KVM_SPSR_UND:
@@ -185,7 +185,7 @@ void vcpu_write_spsr32(struct kvm_vcpu *vcpu, unsigned long v)
 	if (!vcpu->arch.sysregs_loaded_on_cpu) {
 		switch (spsr_idx) {
 		case KVM_SPSR_SVC:
-			vcpu->arch.ctxt.spsr_el1 = v;
+			__vcpu_sys_reg(vcpu, SPSR_EL1) = v;
 			break;
 		case KVM_SPSR_ABT:
 			vcpu->arch.ctxt.spsr_abt = v;
diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c
index 0d3500a11c50..f20f5975633f 100644
--- a/arch/arm64/kvm/sys_regs.c
+++ b/arch/arm64/kvm/sys_regs.c
@@ -1850,9 +1850,9 @@ static bool access_spsr(struct kvm_vcpu *vcpu,
 		return false;
 
 	if (p->is_write)
-		vcpu->arch.ctxt.spsr_el1 = p->regval;
+		__vcpu_sys_reg(vcpu, SPSR_EL1) = p->regval;
 	else
-		p->regval = vcpu->arch.ctxt.spsr_el1;
+		p->regval = __vcpu_sys_reg(vcpu, SPSR_EL1);
 
 	return true;
 }
-- 
2.20.1

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