1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Copyright (C) 2020-2023 Loongson Technology Corporation Limited
4 */
5
6#include <linux/kvm_host.h>
7#include <asm/tlb.h>
8#include <asm/kvm_csr.h>
9
10/*
11 * kvm_flush_tlb_all() - Flush all root TLB entries for guests.
12 *
13 * Invalidate all entries including GVA-->GPA and GPA-->HPA mappings.
14 */
15void kvm_flush_tlb_all(void)
16{
17	unsigned long flags;
18
19	local_irq_save(flags);
20	invtlb_all(INVTLB_ALLGID, 0, 0);
21	local_irq_restore(flags);
22}
23
24void kvm_flush_tlb_gpa(struct kvm_vcpu *vcpu, unsigned long gpa)
25{
26	unsigned long flags;
27
28	local_irq_save(flags);
29	gpa &= (PAGE_MASK << 1);
30	invtlb(INVTLB_GID_ADDR, read_csr_gstat() & CSR_GSTAT_GID, gpa);
31	local_irq_restore(flags);
32}
33