Merge tag 'kvm-riscv-fixes-6.10-1' of https://github.com/kvm-riscv/linux into HEAD

KVM/riscv fixes for 6.10, take #1

- No need to use mask when hart-index-bits is 0
- Fix incorrect reg_subtype labels in kvm_riscv_vcpu_set_reg_isa_ext()

Author: bonzini

arch/riscv/kvm/aia_device.c

@@ -237,10 +237,11 @@ static gpa_t aia_imsic_ppn(struct kvm_aia *aia, gpa_t addr)
 
 static u32 aia_imsic_hart_index(struct kvm_aia *aia, gpa_t addr)
 {
-	u32 hart, group = 0;
+	u32 hart = 0, group = 0;
 
-	hart = (addr >> (aia->nr_guest_bits + IMSIC_MMIO_PAGE_SHIFT)) &
-		GENMASK_ULL(aia->nr_hart_bits - 1, 0);
+	if (aia->nr_hart_bits)
+		hart = (addr >> (aia->nr_guest_bits + IMSIC_MMIO_PAGE_SHIFT)) &
+		       GENMASK_ULL(aia->nr_hart_bits - 1, 0);
 	if (aia->nr_group_bits)
 		group = (addr >> aia->nr_group_shift) &
 			GENMASK_ULL(aia->nr_group_bits - 1, 0);

arch/riscv/kvm/vcpu_onereg.c

@@ -724,9 +724,9 @@ static int kvm_riscv_vcpu_set_reg_isa_ext(struct kvm_vcpu *vcpu,
 	switch (reg_subtype) {
 	case KVM_REG_RISCV_ISA_SINGLE:
 		return riscv_vcpu_set_isa_ext_single(vcpu, reg_num, reg_val);
-	case KVM_REG_RISCV_SBI_MULTI_EN:
+	case KVM_REG_RISCV_ISA_MULTI_EN:
 		return riscv_vcpu_set_isa_ext_multi(vcpu, reg_num, reg_val, true);
-	case KVM_REG_RISCV_SBI_MULTI_DIS:
+	case KVM_REG_RISCV_ISA_MULTI_DIS:
 		return riscv_vcpu_set_isa_ext_multi(vcpu, reg_num, reg_val, false);
 	default:
 		return -ENOENT;