[PATCH 45/56] KVM: arm64: Move SPSR_EL1 to the system register array

From: Marc Zyngier <maz@kernel.org>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: Alexander Graf <graf@amazon.com>,
	Alexandru Elisei <alexandru.elisei@arm.com>,
	Andrew Scull <ascull@google.com>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Christoffer Dall <christoffer.dall@arm.com>,
	David Brazdil <dbrazdil@google.com>,
	Eric Auger <eric.auger@redhat.com>, Gavin Shan <gshan@redhat.com>,
	James Morse <james.morse@arm.com>,
	Mark Rutland <mark.rutland@arm.com>,
	Peng Hao <richard.peng@oppo.com>,
	Quentin Perret <qperret@google.com>,
	Will Deacon <will@kernel.org>,
	Julien Thierry <julien.thierry.kdev@gmail.com>,
	Suzuki K Poulose <suzuki.poulose@arm.com>,
	linux-arm-kernel@lists.infradead.org,
	kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org,
	kernel-team@android.com
Subject: [PATCH 45/56] KVM: arm64: Move SPSR_EL1 to the system register array
Date: Wed,  5 Aug 2020 18:56:49 +0100	[thread overview]
Message-ID: <20200805175700.62775-46-maz@kernel.org> (raw)
In-Reply-To: <20200805175700.62775-1-maz@kernel.org>

SPSR_EL1 being a VNCR-capable register with ARMv8.4-NV, move it to
the sysregs array and update the accessors.

Reviewed-by: James Morse <james.morse@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
---
 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/include/hyp/sysreg-sr.h | 4 ++--
 arch/arm64/kvm/regmap.c                    | 4 ++--
 5 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/arch/arm64/include/asm/kvm_emulate.h b/arch/arm64/include/asm/kvm_emulate.h
index 5f959fedff09..57f9042e7270 100644
--- a/arch/arm64/include/asm/kvm_emulate.h
+++ b/arch/arm64/include/asm/kvm_emulate.h
@@ -176,7 +176,7 @@ 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)
@@ -189,7 +189,7 @@ 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 dfb97ed2f680..91b1adb6789c 100644
--- a/arch/arm64/include/asm/kvm_host.h
+++ b/arch/arm64/include/asm/kvm_host.h
@@ -187,6 +187,7 @@ enum vcpu_sysreg {
 
 	ELR_EL1,
 	SP_EL1,
+	SPSR_EL1,
 
 	/* 32bit specific registers. Keep them at the end of the range */
 	DACR32_EL2,	/* Domain Access Control Register */
@@ -241,7 +242,6 @@ 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 70215f3a6f89..dfb5218137ca 100644
--- a/arch/arm64/kvm/guest.c
+++ b/arch/arm64/kvm/guest.c
@@ -135,7 +135,7 @@ static void *core_reg_addr(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg)
 		return __ctxt_sys_reg(&vcpu->arch.ctxt, ELR_EL1);
 
 	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/include/hyp/sysreg-sr.h b/arch/arm64/kvm/hyp/include/hyp/sysreg-sr.h
index fb4bc42e72c5..7a986030145f 100644
--- a/arch/arm64/kvm/hyp/include/hyp/sysreg-sr.h
+++ b/arch/arm64/kvm/hyp/include/hyp/sysreg-sr.h
@@ -48,7 +48,7 @@ static inline void __sysreg_save_el1_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 inline void __sysreg_save_el2_return_state(struct kvm_cpu_context *ctxt)
@@ -127,7 +127,7 @@ static inline void __sysreg_restore_el1_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 inline void __sysreg_restore_el2_return_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;
-- 
2.27.0

