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git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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1f6d0eee54
Currently, all kvm_riscv_hfence_xyz() APIs assume VMID to be the host VMID of the Guest/VM which resticts use of these APIs only for host TLB maintenance. Let's allow passing VMID as a parameter to all kvm_riscv_hfence_xyz() APIs so that they can be re-used for nested virtualization related TLB maintenance. Signed-off-by: Anup Patel <apatel@ventanamicro.com> Tested-by: Atish Patra <atishp@rivosinc.com> Reviewed-by: Nutty Liu <liujingqi@lanxincomputing.com> Link: https://lore.kernel.org/r/20250618113532.471448-13-apatel@ventanamicro.com Signed-off-by: Anup Patel <anup@brainfault.org>
84 lines
2.7 KiB
C
84 lines
2.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (c) 2025 Ventana Micro Systems Inc.
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*/
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#ifndef __RISCV_KVM_TLB_H_
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#define __RISCV_KVM_TLB_H_
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#include <linux/kvm_types.h>
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enum kvm_riscv_hfence_type {
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KVM_RISCV_HFENCE_UNKNOWN = 0,
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KVM_RISCV_HFENCE_GVMA_VMID_GPA,
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KVM_RISCV_HFENCE_GVMA_VMID_ALL,
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KVM_RISCV_HFENCE_VVMA_ASID_GVA,
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KVM_RISCV_HFENCE_VVMA_ASID_ALL,
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KVM_RISCV_HFENCE_VVMA_GVA,
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KVM_RISCV_HFENCE_VVMA_ALL
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};
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struct kvm_riscv_hfence {
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enum kvm_riscv_hfence_type type;
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unsigned long asid;
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unsigned long vmid;
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unsigned long order;
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gpa_t addr;
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gpa_t size;
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};
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#define KVM_RISCV_VCPU_MAX_HFENCE 64
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#define KVM_RISCV_GSTAGE_TLB_MIN_ORDER 12
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void kvm_riscv_local_hfence_gvma_vmid_gpa(unsigned long vmid,
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gpa_t gpa, gpa_t gpsz,
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unsigned long order);
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void kvm_riscv_local_hfence_gvma_vmid_all(unsigned long vmid);
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void kvm_riscv_local_hfence_gvma_gpa(gpa_t gpa, gpa_t gpsz,
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unsigned long order);
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void kvm_riscv_local_hfence_gvma_all(void);
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void kvm_riscv_local_hfence_vvma_asid_gva(unsigned long vmid,
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unsigned long asid,
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unsigned long gva,
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unsigned long gvsz,
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unsigned long order);
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void kvm_riscv_local_hfence_vvma_asid_all(unsigned long vmid,
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unsigned long asid);
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void kvm_riscv_local_hfence_vvma_gva(unsigned long vmid,
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unsigned long gva, unsigned long gvsz,
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unsigned long order);
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void kvm_riscv_local_hfence_vvma_all(unsigned long vmid);
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void kvm_riscv_tlb_flush_process(struct kvm_vcpu *vcpu);
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void kvm_riscv_fence_i_process(struct kvm_vcpu *vcpu);
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void kvm_riscv_hfence_vvma_all_process(struct kvm_vcpu *vcpu);
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void kvm_riscv_hfence_process(struct kvm_vcpu *vcpu);
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void kvm_riscv_fence_i(struct kvm *kvm,
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unsigned long hbase, unsigned long hmask);
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void kvm_riscv_hfence_gvma_vmid_gpa(struct kvm *kvm,
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unsigned long hbase, unsigned long hmask,
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gpa_t gpa, gpa_t gpsz,
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unsigned long order, unsigned long vmid);
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void kvm_riscv_hfence_gvma_vmid_all(struct kvm *kvm,
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unsigned long hbase, unsigned long hmask,
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unsigned long vmid);
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void kvm_riscv_hfence_vvma_asid_gva(struct kvm *kvm,
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unsigned long hbase, unsigned long hmask,
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unsigned long gva, unsigned long gvsz,
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unsigned long order, unsigned long asid,
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unsigned long vmid);
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void kvm_riscv_hfence_vvma_asid_all(struct kvm *kvm,
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unsigned long hbase, unsigned long hmask,
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unsigned long asid, unsigned long vmid);
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void kvm_riscv_hfence_vvma_gva(struct kvm *kvm,
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unsigned long hbase, unsigned long hmask,
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unsigned long gva, unsigned long gvsz,
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unsigned long order, unsigned long vmid);
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void kvm_riscv_hfence_vvma_all(struct kvm *kvm,
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unsigned long hbase, unsigned long hmask,
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unsigned long vmid);
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#endif
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