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3ffa75cd18
As we've now switched to the new world switch implementation, remove the weak attributes, as nobody is supposed to override it anymore. Acked-by: Christoffer Dall <christoffer.dall@linaro.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
81 lines
2.1 KiB
C
81 lines
2.1 KiB
C
/*
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* Copyright (C) 2015 - ARM Ltd
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* Author: Marc Zyngier <marc.zyngier@arm.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "hyp.h"
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static void __hyp_text __tlb_flush_vmid_ipa(struct kvm *kvm, phys_addr_t ipa)
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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->arch.vttbr, vttbr_el2);
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isb();
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/*
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* We could do so much better if we had the VA as well.
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* Instead, we invalidate Stage-2 for this IPA, and the
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* whole of Stage-1. Weep...
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*/
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ipa >>= 12;
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asm volatile("tlbi ipas2e1is, %0" : : "r" (ipa));
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/*
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* We have to ensure completion of the invalidation at Stage-2,
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* since a table walk on another CPU could refill a TLB with a
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* complete (S1 + S2) walk based on the old Stage-2 mapping if
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* the Stage-1 invalidation happened first.
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*/
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dsb(ish);
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asm volatile("tlbi vmalle1is" : : );
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dsb(ish);
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isb();
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write_sysreg(0, vttbr_el2);
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}
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__alias(__tlb_flush_vmid_ipa) void __kvm_tlb_flush_vmid_ipa(struct kvm *kvm,
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phys_addr_t ipa);
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static void __hyp_text __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->arch.vttbr, vttbr_el2);
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isb();
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asm volatile("tlbi vmalls12e1is" : : );
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dsb(ish);
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isb();
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write_sysreg(0, vttbr_el2);
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}
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__alias(__tlb_flush_vmid) void __kvm_tlb_flush_vmid(struct kvm *kvm);
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static void __hyp_text __tlb_flush_vm_context(void)
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{
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dsb(ishst);
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asm volatile("tlbi alle1is \n"
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"ic ialluis ": : );
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dsb(ish);
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}
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__alias(__tlb_flush_vm_context) void __kvm_flush_vm_context(void);
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