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From: Piotr Zarycki <piotr.zarycki@gmail.com>
To: Dan Carpenter <error27@gmail.com>
Cc: kvm@vger.kernel.org, seanjc@google.com, pbonzini@redhat.com,
	 shuah@kernel.org, vkuznets@redhat.com,
	linux-kselftest@vger.kernel.org,  linux-kernel@vger.kernel.org,
	kernel-janitors@vger.kernel.org
Subject: Re: [PATCH] KVM: selftests: hyperv_tlb_flush: replace NOP loop with udelay()
Date: Wed, 22 Apr 2026 11:13:33 +0200	[thread overview]
Message-ID: <aeiM82FpO-CcqBlI@arch-piotr> (raw)
In-Reply-To: <aefZrtpivxh0eK_0@stanley.mountain>

On Tue, Apr 21, 2026 at 11:10:22PM +0300, Dan Carpenter wrote:
> 
> How did you test this?
> 


  I built the test using:

    make -C tools/testing/selftests/kvm ARCH=x86_64 x86/hyperv_tlb_flush

  And ran it 100 times to verify it passes consistently

    results: 100/100 passed, 0 failed
    average time: 466ms

  For comparison, the original NOP loop averaged ~537ms on the same machine.

  reply	other threads:[~2026-04-22  9:13 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-04-21 17:29 [PATCH] KVM: selftests: hyperv_tlb_flush: replace NOP loop with udelay() Piotr Zarycki
2026-04-21 20:10 ` Dan Carpenter
2026-04-22  9:13   ` Piotr Zarycki [this message]
2026-04-22 12:36 ` Vitaly Kuznetsov
2026-04-22 13:03   ` [PATCH v2] " Piotr Zarycki
2026-04-23  7:50     ` Vitaly Kuznetsov

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