From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out-178.mta1.migadu.com (out-178.mta1.migadu.com [95.215.58.178]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 50246231A30 for ; Wed, 17 Sep 2025 21:20:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=95.215.58.178 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758144061; cv=none; b=PYqeAEh1PTK+lMY2MDI4Wam9POILhocYuyCN3gtBjwAhdA6N/VcrCQAmjM4oaDJfADQsNcQ3J5Nbeb2SvXhk3zBYhaeFX1kfrIawO0Udhw12HYw1JvGKHxKMRT6M7KRHXKaRRHdhJBkKP5MYszHsMmtbcMIL8qgdNXNQbqnPEFQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758144061; c=relaxed/simple; bh=C6JBU8UQ0J+TDyHKdV4+fcg6PQSDJYVvr3xClRwx3Vw=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=pSS35zMhCfxTAP6FPnHh39ZsElGFEPTb8wbGC09BoR2xv1dFKc7TtiJI2RXSJ955P/wNFamnv/Vkmj/jp8Qi8i6hqHSzW6+p75wmJDvDiGX37njtmzLkg5ByqYallkuHp1+ycjVgMVq7scyQQlIen8J6BtKDMfjCRUo/AzqJqIE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=S/a30xtA; arc=none smtp.client-ip=95.215.58.178 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="S/a30xtA" X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1758144057; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=pd1fhLL+GVsRg46oAn3Js7dlB2NaSHd/8Rv1J0NuXKs=; b=S/a30xtARsCmkTyo3bGBxURya23Qgz70j2RC/jO311BRlsh3Bz3MCqREH3mRVBuICGhHS1 c/aYXmH0aHL4Fs0QG7RJ+rOGpPg/Kpr+rXSkiKWBQQpVwLgJ57FkLzL3H3X11oYTipH6rp KrWZ7DYDVD8SGu+HYwfSbSWqBOIq/nQ= From: Oliver Upton To: kvmarm@lists.linux.dev Cc: Marc Zyngier , Joey Gouly , Suzuki K Poulose , Zenghui Yu , Paolo Bonzini , Sean Christopherson , Christian Borntraeger , Janosch Frank , Claudio Imbrenda , David Hildenbrand , linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org, Oliver Upton Subject: [PATCH 00/13] KVM: arm64: selftests: Run selftests in VHE EL2 Date: Wed, 17 Sep 2025 14:20:30 -0700 Message-ID: <20250917212044.294760-1-oliver.upton@linux.dev> Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Migadu-Flow: FLOW_OUT I've been working on some MMU-related features that are unused by KVM meaning they're somewhat annoying to test. Because of that, I found the time / patience to port our existing selftests infrastructure over to running in VHE EL2, opportunistically promoting tests when the stars align. Creating a VGIC is a hard requirement of enabling EL2 for a VM. As a consequence of this, I need to eat my words from my earlier conversation with Sean on this topic and hammer in a default VGICv3. This requires some participation from the arch-neutral code given the ordering constraints on vCPU and VGIC creation. At the tail end of this series is a sanity test for EL2 but nothing is actually running nested (yet). Despite that, running in EL2 has proven valuable already as it has uncovered a bug [*]. This is all _very_ lightly tested on an M2 :) Applies to 6.17-rc4 [*]: https://lore.kernel.org/kvmarm/20250917203125.283116-1-oliver.upton@linux.dev/ Oliver Upton (13): KVM: arm64: selftests: Provide kvm_arch_vm_post_create() in library code KVM: arm64: selftests: Initialize VGICv3 only once KVM: arm64: selftests: Add helper to check for VGICv3 support KVM: arm64: selftests: Add unsanitised helpers for VGICv3 creation KVM: arm64: selftests: Create a VGICv3 for 'default' VMs KVM: arm64: selftests: Alias EL1 registers to EL2 counterparts KVM: arm64: selftests: Provide helper for getting default vCPU target KVM: arm64: selftests: Select SMCCC conduit based on current EL KVM: arm64: selftests: Use hyp timer IRQs when test runs at EL2 KVM: arm64: selftests: Use the vCPU attr for setting nr of PMU counters KVM: arm64: selftests: Initialize HCR_EL2 KVM: arm64: selftests: Enable EL2 by default KVM: arm64: selftests: Add basic test for running in VHE EL2 tools/testing/selftests/kvm/Makefile.kvm | 1 + .../testing/selftests/kvm/arm64/arch_timer.c | 13 +-- .../kvm/arm64/arch_timer_edge_cases.c | 13 +-- tools/testing/selftests/kvm/arm64/hello_el2.c | 58 ++++++++++++ .../testing/selftests/kvm/arm64/hypercalls.c | 2 +- tools/testing/selftests/kvm/arm64/kvm-uuid.c | 2 +- .../testing/selftests/kvm/arm64/no-vgic-v3.c | 2 + tools/testing/selftests/kvm/arm64/psci_test.c | 13 +-- .../testing/selftests/kvm/arm64/set_id_regs.c | 20 ++-- .../selftests/kvm/arm64/smccc_filter.c | 17 +++- tools/testing/selftests/kvm/arm64/vgic_init.c | 2 + tools/testing/selftests/kvm/arm64/vgic_irq.c | 4 +- .../selftests/kvm/arm64/vgic_lpi_stress.c | 8 +- .../selftests/kvm/arm64/vpmu_counter_access.c | 75 +++++++-------- .../selftests/kvm/dirty_log_perf_test.c | 35 ------- tools/testing/selftests/kvm/dirty_log_test.c | 1 + tools/testing/selftests/kvm/get-reg-list.c | 9 +- .../selftests/kvm/include/arm64/arch_timer.h | 24 +++++ .../kvm/include/arm64/kvm_util_arch.h | 5 +- .../selftests/kvm/include/arm64/processor.h | 73 +++++++++++++++ .../selftests/kvm/include/arm64/vgic.h | 3 + .../testing/selftests/kvm/include/kvm_util.h | 7 +- .../selftests/kvm/lib/arm64/processor.c | 91 ++++++++++++++++--- tools/testing/selftests/kvm/lib/arm64/vgic.c | 64 +++++++++---- tools/testing/selftests/kvm/lib/kvm_util.c | 15 ++- .../testing/selftests/kvm/lib/x86/processor.c | 2 +- tools/testing/selftests/kvm/s390/cmma_test.c | 2 +- tools/testing/selftests/kvm/steal_time.c | 2 +- 28 files changed, 395 insertions(+), 168 deletions(-) create mode 100644 tools/testing/selftests/kvm/arm64/hello_el2.c base-commit: b320789d6883cc00ac78ce83bccbfe7ed58afcf0 -- 2.47.3