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 */
15 void 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
24 void kvm_flush_tlb_gpa(struct kvm_vcpu *vcpu, unsigned long gpa)
25 {
26 lockdep_assert_irqs_disabled();
27 gpa &= (PAGE_MASK << 1);
28 invtlb(INVTLB_GID_ADDR, read_csr_gstat() & CSR_GSTAT_GID, gpa);
29 }
30
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