cf0ba18a44
When rewriting the assembly code to C code, it was useful to have exported aliases or static functions so that we could keep the existing common C code unmodified and at the same time rewrite arm64 from assembly to C code, and later do the arm part. Now when both are done, we really don't need this level of indirection anymore, and it's time to save a few lines and brain cells. Acked-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
64 lines
1.8 KiB
C
64 lines
1.8 KiB
C
/*
|
|
* Original code:
|
|
* Copyright (C) 2012 - Virtual Open Systems and Columbia University
|
|
* Author: Christoffer Dall <c.dall@virtualopensystems.com>
|
|
*
|
|
* Mostly rewritten in C by Marc Zyngier <marc.zyngier@arm.com>
|
|
*
|
|
* 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/>.
|
|
*/
|
|
|
|
#include <asm/kvm_hyp.h>
|
|
|
|
/**
|
|
* Flush per-VMID TLBs
|
|
*
|
|
* __kvm_tlb_flush_vmid(struct kvm *kvm);
|
|
*
|
|
* We rely on the hardware to broadcast the TLB invalidation to all CPUs
|
|
* inside the inner-shareable domain (which is the case for all v7
|
|
* implementations). If we come across a non-IS SMP implementation, we'll
|
|
* have to use an IPI based mechanism. Until then, we stick to the simple
|
|
* hardware assisted version.
|
|
*
|
|
* As v7 does not support flushing per IPA, just nuke the whole TLB
|
|
* instead, ignoring the ipa value.
|
|
*/
|
|
void __hyp_text __kvm_tlb_flush_vmid(struct kvm *kvm)
|
|
{
|
|
dsb(ishst);
|
|
|
|
/* Switch to requested VMID */
|
|
kvm = kern_hyp_va(kvm);
|
|
write_sysreg(kvm->arch.vttbr, VTTBR);
|
|
isb();
|
|
|
|
write_sysreg(0, TLBIALLIS);
|
|
dsb(ish);
|
|
isb();
|
|
|
|
write_sysreg(0, VTTBR);
|
|
}
|
|
|
|
void __hyp_text __kvm_tlb_flush_vmid_ipa(struct kvm *kvm, phys_addr_t ipa)
|
|
{
|
|
__kvm_tlb_flush_vmid(kvm);
|
|
}
|
|
|
|
void __hyp_text __kvm_flush_vm_context(void)
|
|
{
|
|
write_sysreg(0, TLBIALLNSNHIS);
|
|
write_sysreg(0, ICIALLUIS);
|
|
dsb(ish);
|
|
}
|