[v2,7/9] KVM: arm64: Drop is_aarch32 trap attribute

Commit Message

Marc Zyngier Nov. 10, 2020, 1:36 p.m. UTC

is_aarch32 is only used once, and can be trivially replaced by
testing Op0 instead. Drop it.

Signed-off-by: Marc Zyngier <[e-mail]>
---
 arch/arm64/kvm/sys_regs.c        | 7 ++-----
 arch/arm64/kvm/sys_regs.h        | 1 -
 arch/arm64/kvm/vgic-sys-reg-v3.c | 2 --
 3 files changed, 2 insertions(+), 8 deletions(-)

Patch

diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c
index a4726cdbe16f..64fdfb64d791 100644
--- a/arch/arm64/kvm/sys_regs.c
+++ b/arch/arm64/kvm/sys_regs.c
@@ -213,7 +213,7 @@  static bool access_gic_sgi(struct kvm_vcpu *vcpu,
 	 * equivalent to ICC_SGI0R_EL1, as there is no "alternative" secure
 	 * group.
 	 */
-	if (p->is_aarch32) {
+	if (p->Op0 == 0) {		/* AArch32 */
 		switch (p->Op1) {
 		default:		/* Keep GCC quiet */
 		case 0:			/* ICC_SGI1R */
@@ -224,7 +224,7 @@  static bool access_gic_sgi(struct kvm_vcpu *vcpu,
 			g1 = false;
 			break;
 		}
-	} else {
+	} else {			/* AArch64 */
 		switch (p->Op2) {
 		default:		/* Keep GCC quiet */
 		case 5:			/* ICC_SGI1R_EL1 */
@@ -2175,7 +2175,6 @@  static int kvm_handle_cp_64(struct kvm_vcpu *vcpu,
 	int Rt = kvm_vcpu_sys_get_rt(vcpu);
 	int Rt2 = (esr >> 10) & 0x1f;
 
-	params.is_aarch32 = true;
 	params.CRm = (esr >> 1) & 0xf;
 	params.is_write = ((esr & 1) == 0);
 
@@ -2225,7 +2224,6 @@  static int kvm_handle_cp_32(struct kvm_vcpu *vcpu,
 	u32 esr = kvm_vcpu_get_esr(vcpu);
 	int Rt  = kvm_vcpu_sys_get_rt(vcpu);
 
-	params.is_aarch32 = true;
 	params.CRm = (esr >> 1) & 0xf;
 	params.regval = vcpu_get_reg(vcpu, Rt);
 	params.is_write = ((esr & 1) == 0);
@@ -2319,7 +2317,6 @@  int kvm_handle_sys_reg(struct kvm_vcpu *vcpu)
 
 	trace_kvm_handle_sys_reg(esr);
 
-	params.is_aarch32 = false;
 	params.Op0 = (esr >> 20) & 3;
 	params.Op1 = (esr >> 14) & 0x7;
 	params.CRn = (esr >> 10) & 0xf;
diff --git a/arch/arm64/kvm/sys_regs.h b/arch/arm64/kvm/sys_regs.h
index 8c4958d6b5ce..416153b593a6 100644
--- a/arch/arm64/kvm/sys_regs.h
+++ b/arch/arm64/kvm/sys_regs.h
@@ -19,7 +19,6 @@  struct sys_reg_params {
 	u8	Op2;
 	u64	regval;
 	bool	is_write;
-	bool	is_aarch32;
 };
 
 struct sys_reg_desc {
diff --git a/arch/arm64/kvm/vgic-sys-reg-v3.c b/arch/arm64/kvm/vgic-sys-reg-v3.c
index 806d6701a7da..07d5271e9f05 100644
--- a/arch/arm64/kvm/vgic-sys-reg-v3.c
+++ b/arch/arm64/kvm/vgic-sys-reg-v3.c
@@ -268,7 +268,6 @@  int vgic_v3_has_cpu_sysregs_attr(struct kvm_vcpu *vcpu, bool is_write, u64 id,
 
 	params.regval = *reg;
 	params.is_write = is_write;
-	params.is_aarch32 = false;
 
 	if (find_reg_by_id(sysreg, &params, gic_v3_icc_reg_descs,
 			      ARRAY_SIZE(gic_v3_icc_reg_descs)))
@@ -287,7 +286,6 @@  int vgic_v3_cpu_sysregs_uaccess(struct kvm_vcpu *vcpu, bool is_write, u64 id,
 	if (is_write)
 		params.regval = *reg;
 	params.is_write = is_write;
-	params.is_aarch32 = false;
 
 	r = find_reg_by_id(sysreg, &params, gic_v3_icc_reg_descs,
 			   ARRAY_SIZE(gic_v3_icc_reg_descs));