From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pl1-f198.google.com (mail-pl1-f198.google.com [209.85.214.198]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1ECBD450917 for ; Fri, 31 Jul 2026 17:06:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.198 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785517592; cv=none; b=eHaBlq1APakV7V46ZTKR/JN5uSH8SKImFd1aydUVoaGX3rZrzvGCLAaAoed2joH7s/O8p/0WFjSuYxdJSneQiyeLVynmYcp40F1OAxBpqXlbGGJvEpO14OzXFFxw3ziMmgNsOUfm12gTOiIXmHnAqsNLnns67r6nza561EgMYQM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785517592; c=relaxed/simple; bh=atVzo7J4szz2vu/UetIPVOdW3jQWtD74LNLShVxaLFc=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=l2IHKxJYj1ZlzFKVJrrA7yg2+37tvScRohz7MeBwEbLErL5JYfuehU1h+JslOfPz1POzdraiP8vUkbPeD5yHkoPQUQUIzoN6BTCCnnw38jxTzypdkno72P9ezCD21U4Ob70xuDgIQYzyIRkd+4ybvld2DipUqHZ+VD44AhAG2+w= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--seanjc.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=uaMTYP4+; arc=none smtp.client-ip=209.85.214.198 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--seanjc.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="uaMTYP4+" Received: by mail-pl1-f198.google.com with SMTP id d9443c01a7336-2cee894b3d8so21416055ad.2 for ; Fri, 31 Jul 2026 10:06:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1785517590; x=1786122390; darn=lists.linux.dev; h=content-type:cc:to:from:subject:message-id:references:mime-version :in-reply-to:date:reply-to:from:to:cc:subject:date:message-id :reply-to:content-type; bh=9BfMO7lDi/jb9f6SoYoHXqiGNPLVG4w0N20HXOwKIiI=; b=uaMTYP4+nBm/lZISa7wTcxGbF/eDWAPQjaDQ7a2AWE2bRzx7Ke/O1skE6CfiHsWP/n anglglfJP1THlcJYizNNp0MKFLR4QHBWqOd5tNDh4rjQITCz6sSN7/yNWfFoF6YJFF91 dOgv06ujDJHDZJNsjAL6Ajsfsf+p37GBnmvkfKWpxzGCi+ErGSxlmEtMhi/x5J0xdakr EHDRCIbN2IZ6PAVVTKNVTrKeayVYG/ug0rezDA8mdQbu/jsdCN02v0qs6cS/JjO80cY2 OKQ+6XgwD/5pIbuoH0C+Rjj+lkVcpPYEawaUIzaXqNU6k7yA6/Kn6yC9A6rYs7//qTzE 7kkQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1785517590; x=1786122390; h=content-type:cc:to:from:subject:message-id:references:mime-version :in-reply-to:date:reply-to:x-gm-message-state:from:to:cc:subject :date:message-id:reply-to:content-type; bh=9BfMO7lDi/jb9f6SoYoHXqiGNPLVG4w0N20HXOwKIiI=; b=pu2eUi/A5B+zrr43YXUg+0PRW+QSEwDoMokAT8OkUA4o4Wu8YUo+SrtHf7w+JE00hK ZNu+PrKAWKiHqbZhzIUkoIySkAt3NYC39EpMU7xl7Sotdg98LggiqTd4zYXP8qCKxfTg zRMaKGfcf2p4qOQTJBv9mjlStjQmpxCKzaCDaF0OqzV/I3ZDfZzp0FwXQzaHWUDNtuRH 4NJObtZm1Wnp7eC1Ov7scmqlqiGhJgVFdNZYiO8wrpOvCOnZlXsrySq1PQYJ1MziB+iS f+7v0qABRJP0ZRNwSs2CkyptrSm3KElpcj0qUUQ6sY2prtR2aV+upr3B3LOJC+5PZ7JA 6YDA== X-Forwarded-Encrypted: i=1; AHgh+Rr8ptHcHZkWigLNYeywHxRxjSePzsn1n63EsiA8vrwqXmdpXOBcy4zDxKTnSbSmn1rd7RTOQI8=@lists.linux.dev X-Gm-Message-State: AOJu0Yzf3WBQj9xqGoxFvmnWKMf5tKoLLqaycfVORLd+MtZ5M+dtGvki deoMmYWTjyfutxCKLBAw/EubwztUQz+UD3GmBUzPJ4DqSwkMdlSny6QAzEsVUo2gqCGlDD464cG 2lCl5eA== X-Received: from plje10.prod.google.com ([2002:a17:902:ed8a:b0:2ca:e62e:eb94]) (user=seanjc job=prod-delivery.src-stubby-dispatcher) by 2002:a17:903:2d1:b0:2cc:6817:d9bc with SMTP id d9443c01a7336-2d0523e6ee5mr6994735ad.38.1785517589951; Fri, 31 Jul 2026 10:06:29 -0700 (PDT) Reply-To: Sean Christopherson Date: Fri, 31 Jul 2026 10:06:13 -0700 In-Reply-To: <20260731170619.2620845-1-seanjc@google.com> Precedence: bulk X-Mailing-List: kvmarm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20260731170619.2620845-1-seanjc@google.com> X-Mailer: git-send-email 2.55.0.508.g3f0d502094-goog Message-ID: <20260731170619.2620845-7-seanjc@google.com> Subject: [PATCH v2 06/12] KVM: selftests: Affine threads to random CPUs in hardware disable test From: Sean Christopherson To: Paolo Bonzini , Marc Zyngier , Oliver Upton , Christian Borntraeger , Janosch Frank , Claudio Imbrenda , Sean Christopherson Cc: Joey Gouly , Steffen Eiden , Suzuki K Poulose , Zenghui Yu , David Hildenbrand , kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, linux-kernel@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Affine the worker threads to random CPUs in the hardware disable test, and honor the starting CPU set in the process. Hardcoding to CPUs 0-3 is both wrong and less interesting than running on random CPUs. Signed-off-by: Sean Christopherson --- tools/testing/selftests/kvm/hardware_disable_test.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/kvm/hardware_disable_test.c b/tools/testing/selftests/kvm/hardware_disable_test.c index d8288147b0a6..bd23c1300370 100644 --- a/tools/testing/selftests/kvm/hardware_disable_test.c +++ b/tools/testing/selftests/kvm/hardware_disable_test.c @@ -149,12 +149,15 @@ void wait_for_child_setup(pid_t pid) int main(int argc, char **argv) { + cpu_set_t allowed_cpu_set; u32 i; int s, r; pid_t pid; - for (i = 0; i < VCPU_NUM; i++) - CPU_SET(i, &threads_cpu_set); + kvm_sched_getaffinity(0, sizeof(cpu_set_t), &allowed_cpu_set); + + for (i = 0; i < VCPU_NUM && CPU_COUNT(&allowed_cpu_set); i++) + CPU_SET(kvm_pick_random_cpu(&allowed_cpu_set), &threads_cpu_set); sem = sem_open("vm_sem", O_CREAT | O_EXCL, 0644, 0); sem_unlink("vm_sem"); -- 2.55.0.508.g3f0d502094-goog