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* [PATCH] KVM: ARM: count remote TLB flushes
@ 2021-07-27 10:32 Paolo Bonzini
  2021-07-28 19:02 ` Oliver Upton
  2021-08-02 13:45 ` Marc Zyngier
  0 siblings, 2 replies; 3+ messages in thread
From: Paolo Bonzini @ 2021-07-27 10:32 UTC (permalink / raw)
  To: linux-kernel, kvm; +Cc: maz, kvmarm

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>
---
 arch/arm64/kvm/mmu.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/kvm/mmu.c b/arch/arm64/kvm/mmu.c
index c10207fed2f3..6cf16b43bfcc 100644
--- a/arch/arm64/kvm/mmu.c
+++ b/arch/arm64/kvm/mmu.c
@@ -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.generic.remote_tlb_flush;
 }
 
 static bool kvm_is_device_pfn(unsigned long pfn)
-- 
2.31.1


^ permalink raw reply	[flat|nested] 3+ messages in thread

end of thread, other threads:[~2021-08-02 13:45 UTC | newest]

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2021-07-27 10:32 [PATCH] KVM: ARM: count remote TLB flushes Paolo Bonzini
2021-07-28 19:02 ` Oliver Upton
2021-08-02 13:45 ` Marc Zyngier

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