From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id A4FF832ABF7 for ; Thu, 27 Nov 2025 11:08:40 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.140.110.172 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764241722; cv=none; b=VzKI6/lBBrSi6NLOKHp/nmr8O7GF0N6JkvCERczjsF5cOrCTUcTDtoK3EE3P1N3md4rbfcI5dKJolbP64iQtx4Tow7HACT8chLaz+NA7Y0CY0B8NjjDATytZxHxCJA/Ukv1uhxfe1ToVS7dmW1hyu8r8XbSO9KKYlo/3IrNQ3NU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764241722; c=relaxed/simple; bh=sgv0ngZl3R0UBBCOfD0Wy5vgMgcm8qI+c3ByDO7gkVc=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=Y3wnhXdxwzQqr4z+GTZ7dPZvKEBsZ5j315lWrIEzTxxC0uj35zJ9KoYLMCa9wGT+LEuUoPJUqpi72kkb1xYCTBgN878JL1nhvE0BO5XM4b6rSDXnx6IXVrTC/vpPV7Xx2KsgJPS7c2HtVr4NUG9MD72sJOo5Bg1qDG4iZqOMauA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com; spf=pass smtp.mailfrom=arm.com; arc=none smtp.client-ip=217.140.110.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=arm.com Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 8BCB31477; Thu, 27 Nov 2025 03:08:32 -0800 (PST) Received: from e124191.cambridge.arm.com (e124191.cambridge.arm.com [10.1.197.45]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id B35F43F66E; Thu, 27 Nov 2025 03:08:38 -0800 (PST) Date: Thu, 27 Nov 2025 11:08:32 +0000 From: Joey Gouly To: Eric Auger Cc: kvm@vger.kernel.org, alexandru.elisei@arm.com, andrew.jones@linux.dev, kvmarm@lists.linux.dev, Marc Zyngier , Oliver Upton Subject: Re: [kvm-unit-tests PATCH v3 00/10] arm64: EL2 support Message-ID: <20251127110832.GA3240191@e124191.cambridge.arm.com> References: <20250925141958.468311-1-joey.gouly@arm.com> <44fac47f-1df1-4119-8bf0-1db96cda18ef@redhat.com> Precedence: bulk X-Mailing-List: kvmarm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <44fac47f-1df1-4119-8bf0-1db96cda18ef@redhat.com> On Thu, Nov 27, 2025 at 11:04:43AM +0100, Eric Auger wrote: > Hi Joey, > > On 9/25/25 4:19 PM, Joey Gouly wrote: > > Hi all, > > > > This series is for adding support to running the kvm-unit-tests at EL2. These > > have been tested with Linux 6.17-rc6 KVM nested virt. > > > > This latest round I also tested using the run_tests.sh script with QEMU TCG, > > running at EL2. > > > > The goal is to later extend and add new tests for Nested Virtualisation, > > however they should also work with bare metal as well. > > > > Changes since v2[1]: > > - Move the sctlr setup in EFI to a function. > > - Decided to not re-use el2_setup.h from Linux, looked more > > complicated to use than needed for KUT. > > - Add EL2 env variable for testing, open to feedback for that. > > This was untested with kvmtool as my testing setup only has > > busybox ash currently, and the run_tests.sh script needs bash. > > > > Issues (that I think are fine to investigate/fix later): > > - Some of the debug tests fail with QEMU at EL2 and kvmtool. > > - The gic ipi test times out with QEMU at EL2, but works with kvmtool. > > Have you noticed any failure with migration tests. On my end, as soon as > I set EL2=1 migration tests do fail. Yes migration also fails here, forgot to mention that. Seems like migration completes, but then something bad happens on the first interrupt. I will investigate a bit now and see if it's an easy fix. Thanks, Joey > > Eric > > > > Thanks, > > Joey > > > > [1] https://lore.kernel.org/kvmarm/20250529135557.2439500-1-joey.gouly@arm.com/ > > > > Alexandru Elisei (2): > > arm64: micro-bench: use smc when at EL2 > > arm64: selftest: update test for running at EL2 > > > > Joey Gouly (8): > > arm64: drop to EL1 if booted at EL2 > > arm64: efi: initialise SCTLR_ELx fully > > arm64: efi: initialise the EL > > arm64: timer: use hypervisor timers when at EL2 > > arm64: micro-bench: fix timer IRQ > > arm64: pmu: count EL2 cycles > > arm64: run at EL2 if supported > > arm64: add EL2 environment variable > > > > arm/cstart64.S | 56 ++++++++++++++++++++++++++++++++++++-- > > arm/efi/crt0-efi-aarch64.S | 5 ++++ > > arm/micro-bench.c | 26 ++++++++++++++++-- > > arm/pmu.c | 13 ++++++--- > > arm/run | 7 +++++ > > arm/selftest.c | 18 ++++++++---- > > arm/timer.c | 10 +++++-- > > lib/acpi.h | 2 ++ > > lib/arm/asm/setup.h | 8 ++++++ > > lib/arm/asm/timer.h | 11 ++++++++ > > lib/arm/setup.c | 4 +++ > > lib/arm/timer.c | 19 +++++++++++-- > > lib/arm64/asm/sysreg.h | 19 +++++++++++++ > > lib/arm64/processor.c | 12 ++++++++ > > 14 files changed, 191 insertions(+), 19 deletions(-) > > >