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d7f4ed4b22
Implement LoongArch virtual machine tlb operations such as flush tlb by specific gpa parameter and flush all of the virtual machine's tlbs. Reviewed-by: Bibo Mao <maobibo@loongson.cn> Tested-by: Huacai Chen <chenhuacai@loongson.cn> Signed-off-by: Tianrui Zhao <zhaotianrui@loongson.cn> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
32 lines
706 B
C
32 lines
706 B
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) 2020-2023 Loongson Technology Corporation Limited
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*/
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#include <linux/kvm_host.h>
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#include <asm/tlb.h>
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#include <asm/kvm_csr.h>
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/*
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* kvm_flush_tlb_all() - Flush all root TLB entries for guests.
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*
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* Invalidate all entries including GVA-->GPA and GPA-->HPA mappings.
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*/
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void kvm_flush_tlb_all(void)
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{
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unsigned long flags;
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local_irq_save(flags);
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invtlb_all(INVTLB_ALLGID, 0, 0);
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local_irq_restore(flags);
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}
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void kvm_flush_tlb_gpa(struct kvm_vcpu *vcpu, unsigned long gpa)
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{
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unsigned long flags;
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local_irq_save(flags);
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gpa &= (PAGE_MASK << 1);
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invtlb(INVTLB_GID_ADDR, read_csr_gstat() & CSR_GSTAT_GID, gpa);
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local_irq_restore(flags);
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}
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