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BACKPORT: KVM: arm64: Count VMID-wide TLB invalidations

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KVM/ARM has an architecture-specific implementation of
kvm_flush_remote_tlbs; however, unlike the generic one,
it does not count the flushes in kvm->stat.remote_tlb_flush,
so that it inexorably remained stuck to zero.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Oliver Upton <oupton@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20210727103251.16561-1-pbonzini@redhat.com
(cherry picked from commit 38f703663d)
[willdeacon@: Drop reference to 'generic' member of 'struct kvm_vm_stat']
Signed-off-by: Will Deacon <willdeacon@google.com>
Bug: 198418208
Change-Id: I09953759935ab362d5c9419df8ea8d99c584154b
This commit is contained in:
Paolo Bonzini
2021-07-27 12:32:51 +02:00
committed by Will Deacon
parent 0affe06537
commit 1aa8a35f19
1 changed files with 1 additions and 0 deletions
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arch/arm64/kvm/mmu.c
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@@ -81,6 +81,7 @@ static bool memslot_is_logging(struct kvm_memory_slot *memslot)
void kvm_flush_remote_tlbs(struct kvm *kvm)
{
kvm_call_hyp(__kvm_tlb_flush_vmid, &kvm->arch.mmu);
++kvm->stat.remote_tlb_flush;
}
static bool kvm_is_device_pfn(unsigned long pfn)