arch/loongarch/kvm/tlb.c

   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 }