1 // SPDX-License-Identifier: GPL-2.0-only
7 #include <linux/irqchip/arm-gic-v3.h>
82  * - Needed by common Linux distributions (e.g., floating point)
83  * - Trivial to support, e.g., supporting the feature does not introduce or
85  * - Cannot be trapped or prevent the guest from using anyway
92 	MAX_FEAT(ID_AA64PFR0_EL1, EL3, IMP),
171  * However, both have Not-Implemented values that are non-zero. Define them
200 		u64 min_signed = (1UL << width) - 1UL;  in get_restricted_features()
201 		u64 sign_bit = 1UL << (width - 1);  in get_restricted_features()
202 		u64 mask = GENMASK_ULL(width + shift - 1, shift);  in get_restricted_features()
206 		if (vm_supported && !vm_supported(vcpu->kvm))  in get_restricted_features()
271 	struct kvm *kvm = vcpu->kvm;  in read_id_reg()
274 	if (WARN_ON_ONCE(!test_bit(KVM_ARCH_FLAG_ID_REGS_INITIALIZED, &kvm->arch.flags)))  in read_id_reg()
278 		return kvm->arch.id_regs[IDREG_IDX(reg)];  in read_id_reg()
287 	if (!p->is_write)  in pvm_access_raz_wi()
288 		p->regval = 0;  in pvm_access_raz_wi()
303 	if (p->is_write) {  in pvm_access_id_aarch32()
322 	if (p->is_write) {  in pvm_access_id_aarch64()
327 	p->regval = read_id_reg(vcpu, r);  in pvm_access_id_aarch64()
336 	if (!p->is_write)  in pvm_gic_read_sre()
337 		p->regval = ICC_SRE_EL1_DIB | ICC_SRE_EL1_DFB | ICC_SRE_EL1_SRE;  in pvm_gic_read_sre()
358 /* Mark the specified system register as Read-As-Zero/Write-Ignored */
487 	struct kvm *kvm = vcpu->kvm;  in kvm_init_pvm_id_regs()
488 	struct kvm_arch *ka = &kvm->arch;  in kvm_init_pvm_id_regs()
493 	if (test_bit(KVM_ARCH_FLAG_ID_REGS_INITIALIZED, &kvm->arch.flags))  in kvm_init_pvm_id_regs()
501 		ka->id_regs[IDREG_IDX(r)] = pvm_calc_id_reg(vcpu, r);  in kvm_init_pvm_id_regs()
503 	set_bit(KVM_ARCH_FLAG_ID_REGS_INITIALIZED, &kvm->arch.flags);  in kvm_init_pvm_id_regs()
507  * Checks that the sysreg table is unique and in-order.
516 		if (cmp_sys_reg(&pvm_sys_reg_descs[i-1], &pvm_sys_reg_descs[i]) >= 0)  in kvm_check_pvm_sysreg_table()
548 	if (r->access == NULL)  in kvm_handle_pvm_sysreg()
552 	if (r->access(vcpu, &params, r))  in kvm_handle_pvm_sysreg()