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a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:message-id:mime-version:subject:from:to:cc; bh=IC7/AY/yxBuXuyMg4BXoHPpcO7Yg2Uivpm2g2M9LU9A=; b=hY5y7r4yllIliK79MGqqig0Kl7aCzPPTT7k8eoJP+FPrJypG5OjxXEAcbHlx+hdrFL /EK3CgShTxtJuYmfZtBUDUyCZ4FXAuGKy6KT2kp8y9dfGOmAmTAW8HyvU4ekEMK1udGH ZGTehHFDntAk5VJ5f0yWAXr/T5KaHyfBpRu9khrUPACj5i733DgcytHmQeFVqtFTrN8Y EzvADtDBztrZR+acQim1nhppX5UEL22JkyVgADsZDUEN4IpVED0SMwMZLxFONLO8QOIG BSlz5lZdmnx1cmNJ21MwDm9GsdHmdYdgWe9plpkp98pWziFnuv5pXTbTK2W95uoWeoo1 U9Kw== X-Gm-Message-State: AOAM530fNeSm88nwQVWWbSWtDSqf5gWNnjC/7n35Wap0MzFIaQsuAH6p AFjOFvOn55OTd7ScOVJ7jNlWoh4lJlwJ X-Google-Smtp-Source: ABdhPJzVt2OJAdldm107LqGs2piLrTLDAJR7RMU/Sc/Yly0nF0QfNnqBHMDf+WR1oTUaLCXqKhGQrQRWp7fj X-Received: from rananta-virt.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:1bcc]) (user=rananta job=sendgmr) by 2002:a5b:443:: with SMTP id s3mr2083384ybp.299.1630530858232; Wed, 01 Sep 2021 14:14:18 -0700 (PDT) Date: Wed, 1 Sep 2021 21:14:00 +0000 Message-Id: <20210901211412.4171835-1-rananta@google.com> Mime-Version: 1.0 X-Mailer: git-send-email 2.33.0.153.gba50c8fa24-goog Subject: [PATCH v3 00/12] KVM: arm64: selftests: Introduce arch_timer selftest From: Raghavendra Rao Ananta To: Paolo Bonzini , Marc Zyngier , James Morse , Alexandru Elisei , Suzuki K Poulose Cc: Catalin Marinas , Will Deacon , Peter Shier , Ricardo Koller , Oliver Upton , Reiji Watanabe , Jing Zhang , Raghavendra Rao Anata , linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, linux-kernel@vger.kernel.org, kvm@vger.kernel.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210901_141420_291689_18F9E5D6 X-CRM114-Status: GOOD ( 19.35 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hello, The patch series adds a KVM selftest to validate the behavior of ARM's generic timer (patch-11). The test programs the timer IRQs periodically, and for each interrupt, it validates the behaviour against the architecture specifications. The test further provides a command-line interface to configure the number of vCPUs, the period of the timer, and the number of iterations that the test has to run for. Patch-12 adds an option to randomly migrate the vCPUs to different physical CPUs across the system. The bug for the fix provided by Marc with commit 3134cc8beb69d0d ("KVM: arm64: vgic: Resample HW pending state on deactivation") was discovered using arch_timer test with vCPU migrations. Since the test heavily depends on interrupts, patch-10 adds a host library to setup ARM Generic Interrupt Controller v3 (GICv3). This includes creating a vGIC device, setting up distributor and redistributor attributes, and mapping the guest physical addresses. Symmetrical to this, patch-9 adds a guest library to talk to the vGIC, which includes initializing the controller, enabling/disabling the interrupts, and so on. Furthermore, additional processor utilities such as accessing the MMIO (via readl/writel), read/write to assembler unsupported registers, basic delay generation, enable/disable local IRQs, and so on, are also introduced that the test/GICv3 takes advantage of (patches 1 through 8). The patch series, specifically the library support, is derived from the kvm-unit-tests and the kernel itself. Regards, Raghavendra v2 -> v3: - Addressed the comments from Ricardo regarding moving the vGIC host support for selftests to its own library. - Added an option (-m) to migrate the guest vCPUs to physical CPUs in the system. v1 -> v2: Addressed comments from Zenghui in include/aarch64/arch_timer.h: - Correct the header description - Remove unnecessary inclusion of linux/sizes.h - Re-arrange CTL_ defines in ascending order - Remove inappropriate 'return' from timer_set_* functions, which returns 'void'. Raghavendra Rao Ananta (12): KVM: arm64: selftests: Add MMIO readl/writel support KVM: arm64: selftests: Add write_sysreg_s and read_sysreg_s KVM: arm64: selftests: Add support for cpu_relax KVM: arm64: selftests: Add basic support for arch_timers KVM: arm64: selftests: Add basic support to generate delays KVM: arm64: selftests: Add support to disable and enable local IRQs KVM: arm64: selftests: Add support to get the vcpuid from MPIDR_EL1 KVM: arm64: selftests: Add light-weight spinlock support KVM: arm64: selftests: Add basic GICv3 support KVM: arm64: selftests: Add host support for vGIC KVM: arm64: selftests: Add arch_timer test KVM: arm64: selftests: arch_timer: Support vCPU migration tools/testing/selftests/kvm/.gitignore | 1 + tools/testing/selftests/kvm/Makefile | 3 +- .../selftests/kvm/aarch64/arch_timer.c | 457 ++++++++++++++++++ .../kvm/include/aarch64/arch_timer.h | 142 ++++++ .../selftests/kvm/include/aarch64/delay.h | 25 + .../selftests/kvm/include/aarch64/gic.h | 21 + .../selftests/kvm/include/aarch64/processor.h | 140 +++++- .../selftests/kvm/include/aarch64/spinlock.h | 13 + .../selftests/kvm/include/aarch64/vgic.h | 14 + tools/testing/selftests/kvm/lib/aarch64/gic.c | 93 ++++ .../selftests/kvm/lib/aarch64/gic_private.h | 21 + .../selftests/kvm/lib/aarch64/gic_v3.c | 240 +++++++++ .../selftests/kvm/lib/aarch64/gic_v3.h | 70 +++ .../selftests/kvm/lib/aarch64/spinlock.c | 27 ++ .../testing/selftests/kvm/lib/aarch64/vgic.c | 67 +++ 15 files changed, 1332 insertions(+), 2 deletions(-) create mode 100644 tools/testing/selftests/kvm/aarch64/arch_timer.c create mode 100644 tools/testing/selftests/kvm/include/aarch64/arch_timer.h create mode 100644 tools/testing/selftests/kvm/include/aarch64/delay.h create mode 100644 tools/testing/selftests/kvm/include/aarch64/gic.h create mode 100644 tools/testing/selftests/kvm/include/aarch64/spinlock.h create mode 100644 tools/testing/selftests/kvm/include/aarch64/vgic.h create mode 100644 tools/testing/selftests/kvm/lib/aarch64/gic.c create mode 100644 tools/testing/selftests/kvm/lib/aarch64/gic_private.h create mode 100644 tools/testing/selftests/kvm/lib/aarch64/gic_v3.c create mode 100644 tools/testing/selftests/kvm/lib/aarch64/gic_v3.h create mode 100644 tools/testing/selftests/kvm/lib/aarch64/spinlock.c create mode 100644 tools/testing/selftests/kvm/lib/aarch64/vgic.c