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Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not see http www gnu org licenses extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 503 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Enrico Weigelt <info@metux.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190602204653.811534538@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
68 lines
1.5 KiB
C
68 lines
1.5 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Original code:
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* Copyright (C) 2012 - Virtual Open Systems and Columbia University
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* Author: Christoffer Dall <c.dall@virtualopensystems.com>
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*
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* Mostly rewritten in C by Marc Zyngier <marc.zyngier@arm.com>
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*/
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#include <asm/kvm_hyp.h>
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#include <asm/kvm_mmu.h>
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/**
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* Flush per-VMID TLBs
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*
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* __kvm_tlb_flush_vmid(struct kvm *kvm);
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*
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* We rely on the hardware to broadcast the TLB invalidation to all CPUs
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* inside the inner-shareable domain (which is the case for all v7
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* implementations). If we come across a non-IS SMP implementation, we'll
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* have to use an IPI based mechanism. Until then, we stick to the simple
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* hardware assisted version.
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*
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* As v7 does not support flushing per IPA, just nuke the whole TLB
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* instead, ignoring the ipa value.
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*/
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void __hyp_text __kvm_tlb_flush_vmid(struct kvm *kvm)
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{
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dsb(ishst);
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/* Switch to requested VMID */
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kvm = kern_hyp_va(kvm);
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write_sysreg(kvm_get_vttbr(kvm), VTTBR);
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isb();
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write_sysreg(0, TLBIALLIS);
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dsb(ish);
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isb();
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write_sysreg(0, VTTBR);
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}
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void __hyp_text __kvm_tlb_flush_vmid_ipa(struct kvm *kvm, phys_addr_t ipa)
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{
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__kvm_tlb_flush_vmid(kvm);
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}
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void __hyp_text __kvm_tlb_flush_local_vmid(struct kvm_vcpu *vcpu)
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{
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struct kvm *kvm = kern_hyp_va(kern_hyp_va(vcpu)->kvm);
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/* Switch to requested VMID */
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write_sysreg(kvm_get_vttbr(kvm), VTTBR);
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isb();
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write_sysreg(0, TLBIALL);
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dsb(nsh);
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isb();
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write_sysreg(0, VTTBR);
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}
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void __hyp_text __kvm_flush_vm_context(void)
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{
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write_sysreg(0, TLBIALLNSNHIS);
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write_sysreg(0, ICIALLUIS);
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dsb(ish);
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}
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