Re: [PATCH] KVM: ARM: count remote TLB flushes

[Marc Zyngier]

On Tue, 27 Jul 2021 12:32:51 +0200, Paolo Bonzini wrote:
> 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.

Applied to next, thanks!

[1/1] KVM: ARM: count remote TLB flushes
  commit: 38f703663d4c82ead5b51b8860deeef19d6dcb6d

Cheers,

M.
-- 
Without deviation from the norm, progress is not possible.


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Re: [PATCH] KVM: ARM: count remote TLB flushes

[Oliver Upton]

On Tue, Jul 27, 2021 at 3:33 AM Paolo Bonzini  wrote:
>
> 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 

Reviewed-by: Oliver Upton 

> ---
>  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, >arch.mmu);
> +   ++kvm->stat.generic.remote_tlb_flush;
>  }
>
>  static bool kvm_is_device_pfn(unsigned long pfn)
> --
> 2.31.1
>
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[PATCH] KVM: ARM: count remote TLB flushes

[Paolo Bonzini]

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 
---
 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, >arch.mmu);
+   ++kvm->stat.generic.remote_tlb_flush;
 }
 
 static bool kvm_is_device_pfn(unsigned long pfn)
-- 
2.31.1

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