From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pj1-f73.google.com (mail-pj1-f73.google.com [209.85.216.73]) (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 49A7E28136F for ; Mon, 25 Aug 2025 19:52:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.216.73 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756151545; cv=none; b=nuRNhukhVKFcjp/A8NFla8yeVef+PZWg0i735b+XFwoj+Lx/RyiBh+Bbi1oD2WBuddAIiALVAUtJfT4Px9czNNppPOVsWfNyft/11fKF93XHZjLjgGf5wQ9E6fVJZfnLH2y4No6WJEtpss1oyPHA0ZjLpH781eMrxBIEHr+PoCo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756151545; c=relaxed/simple; bh=27LVi33Piq79b4c8wVCJq9OIcPzQn7EWMYuMP0qjd6g=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=iAuMcZrI9yj8roZyj100suJ4LedZpxcm1V4JV3tLWiSJ9uawAGLjnVWJ0JFO2sqpmIqVFlfjsUFcClCuz66XPGQ0aDFpsexd81QMKKGX0TxJrdiRop8AdEefWOl+bowt4pDQxrL555k/qs04Vvt3bDzQLJfD1VeYVr7F0NqZp7o= 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=nSmyo81L; arc=none smtp.client-ip=209.85.216.73 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="nSmyo81L" Received: by mail-pj1-f73.google.com with SMTP id 98e67ed59e1d1-32505dbe23fso3193019a91.1 for ; Mon, 25 Aug 2025 12:52:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1756151543; x=1756756343; darn=vger.kernel.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=CCEDB6kqaMG14n95AC3dXml5C4i7TOO+4ulWOjXNjDA=; b=nSmyo81LcBHQzTh8icoumB6cImX5Z6mMTTM41NVK7r/CDuhs3+xSrJfFLA/Icx4675 yHoVaIU3TA/2Irl3IEGdgw58nTdrdbqvkRYNpNnSIm8LCMFUR95J/H29YoUaWgdGnFk4 kdUHCtbt1zbMnu/VINs+Ew/OLD9LPjI7gNytYT6v+4KPZM5l9CERWnFs2e4tEzi3Z09p h4W4AgGpNDmWDVrNLcuLjuMzu0SyVpKPWUHTkP5aqEo4STGIT6ISkBVZ70oVM4GAzOz4 iFX80/sX82zLyVyKPPnpQw0L/iOLI4gm48eARTqunoY1APNpr8qSVHa03kWj+2AFqgSQ WlSw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1756151543; x=1756756343; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=CCEDB6kqaMG14n95AC3dXml5C4i7TOO+4ulWOjXNjDA=; b=hbIB4U2+rvFgkIkTnHcNr7ehQ40RAjLk+D6CMz4V1VIUu+VDkdBdmsGCaaM72NkygQ ghfWGB1vH062+oEXsb7NvB7AV48T5sjokd3gmY/U0SeAkrmRiNdAeRlX6osXuXW2gNlJ c1SGJxY7YZN0LfVRnIKvWas71/9K4zep67bqO4vBSbaPfm1kOD5j9ePRcT1o44iozm+m 1v9esJ3yFjFJNlwH5YM6z073dG9T77tVOndwPMHwctqWfaIrTyIz1m7QMl3MaLmaNEbB dtYA31p69XfPYGuEXxhh177G3Os+/RCeBRYOs08BiY5Ov/evVEjA0aRTgrQ34tszFtJB 5+SA== X-Forwarded-Encrypted: i=1; AJvYcCXznZfvF2Z7dBKHVzNflr80u5/Za02jjzeuMN6MXm3Y1eY+Ng9xDN7d8qzvqX08oGKDCcg=@vger.kernel.org X-Gm-Message-State: AOJu0Yw4J3fTRuvF5ITGEHC76BahCJaC9AjJPEJvHqz71oUOcXl4akFY XX7HuNnwau1g4Fuh4JA9cGkv19YaMSQc6PYbaOET0vtVTjUj9Ewo16q1Eb+P5n6I4mDsbp1xIxw d44+prA== X-Google-Smtp-Source: AGHT+IGdV6Crel2hSBLJu5xj69LCA8mKZyILIoBXiyFz0c96jNGA0JlOa+svdw4ALPEpBZ5tb9n+dMFk9lc= X-Received: from pjbsg1.prod.google.com ([2002:a17:90b:5201:b0:321:c1e3:6b16]) (user=seanjc job=prod-delivery.src-stubby-dispatcher) by 2002:a17:90a:dfcb:b0:31e:c62b:477b with SMTP id 98e67ed59e1d1-32515ec9f34mr13649374a91.11.1756151543426; Mon, 25 Aug 2025 12:52:23 -0700 (PDT) Date: Mon, 25 Aug 2025 12:52:21 -0700 In-Reply-To: <20250825155203.71989-1-sebott@redhat.com> Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20250825155203.71989-1-sebott@redhat.com> Message-ID: Subject: Re: [PATCH] KVM: selftests: fix irqfd_test on arm64 From: Sean Christopherson To: Sebastian Ott Cc: Paolo Bonzini , Shuah Khan , Marc Zyngier , Oliver Upton , kvm@vger.kernel.org, kvmarm@lists.linux.dev, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org Content-Type: text/plain; charset="us-ascii" On Mon, Aug 25, 2025, Sebastian Ott wrote: > irqfd_test on arm triggers the following assertion: > ==== Test Assertion Failure ==== > include/kvm_util.h:527: !ret > pid=3643 tid=3643 errno=11 - Resource temporarily unavailable > 1 0x00000000004026d7: kvm_irqfd at kvm_util.h:527 > 2 0x0000000000402083: main at irqfd_test.c:100 > 3 0x0000ffffa5aab587: ?? ??:0 > 4 0x0000ffffa5aab65f: ?? ??:0 > 5 0x000000000040236f: _start at ??:? > KVM_IRQFD failed, rc: -1 errno: 11 (Resource temporarily unavailable) > > Fix this by setting up a vgic for the vm. > > Signed-off-by: Sebastian Ott > --- > @@ -86,14 +90,30 @@ static void juggle_eventfd_primary(struct kvm_vm *vm, int eventfd) > kvm_irqfd(vm, GSI_BASE_PRIMARY + 1, eventfd, KVM_IRQFD_FLAG_DEASSIGN); > } > > +static struct kvm_vm *test_vm_create(void) > +{ > +#ifdef __aarch64__ > + struct kvm_vm *vm; > + struct kvm_vcpu *vcpu; > + int gic_fd; > + > + vm = vm_create_with_one_vcpu(&vcpu, NULL); > + gic_fd = vgic_v3_setup(vm, 1, 64); > + __TEST_REQUIRE(gic_fd >= 0, "Failed to create vgic-v3"); I don't think this test requires v3+, any GIC will do. Is there a sane way to handle vGIC creation in kvm_arch_vm_post_create()? E.g. could we create a v3 GIC when possible, and fall back to v2? And then provide a way for tests to express a hard v3 GIC dependency? Having to worry about things like this in fairly generic code is quite burdensome. > + > + return vm; > +#endif > + return vm_create(1); > +}