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Fri, 19 Apr 2024 08:59:46 -0700 (PDT) Received: from localhost.localdomain ([2.221.137.100]) by smtp.gmail.com with ESMTPSA id p13-20020adfe60d000000b00349b73143e7sm4793089wrm.75.2024.04.19.08.59.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 19 Apr 2024 08:59:46 -0700 (PDT) From: Jean-Philippe Brucker To: peter.maydell@linaro.org, richard.henderson@linaro.org Cc: philmd@linaro.org, pbonzini@redhat.com, alex.bennee@linaro.org, qemu-devel@nongnu.org, qemu-arm@nongnu.org, Jean-Philippe Brucker Subject: [PATCH v2 00/22] arm: Run CCA VMs with KVM Date: Fri, 19 Apr 2024 16:56:48 +0100 Message-ID: <20240419155709.318866-2-jean-philippe@linaro.org> X-Mailer: git-send-email 2.44.0 MIME-Version: 1.0 Received-SPF: pass client-ip=2a00:1450:4864:20::334; envelope-from=jean-philippe@linaro.org; helo=mail-wm1-x334.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org These patches enable launching a confidential guest with QEMU KVM on Arm. The KVM changes for CCA have now been posted as v2 [1]. Launching a confidential VM requires two additional command-line parameters: -M confidential-guest-support=rme0 -object rme-guest,id=rme0 Since the RFC [2] I tried to address all review comments, and added a few features: * Enabled support for guest memfd by Xiaoyao Li and Chao Peng [3]. Guest memfd is mandatory for CCA. * Support firmware boot (edk2). * Use CPU command-line arguments for Realm parameters. SVE vector length uses the existing sve -cpu parameters, while breakpoints, watchpoints and PMU counters use new CPU parameters. The full series based on the memfd patches is at: https://git.codelinaro.org/linaro/dcap/qemu.git branch cca/v2 Please find instructions for building and running the whole CCA stack at: https://linaro.atlassian.net/wiki/spaces/QEMU/pages/29051027459/Building+an+RME+stack+for+QEMU [1] https://lore.kernel.org/kvm/20240412084056.1733704-1-steven.price@arm.com/ [2] https://lore.kernel.org/all/20230127150727.612594-1-jean-philippe@linaro.org/ [3] https://lore.kernel.org/qemu-devel/20240322181116.1228416-1-pbonzini@redhat.com/ Jean-Philippe Brucker (22): kvm: Merge kvm_check_extension() and kvm_vm_check_extension() target/arm: Add confidential guest support target/arm/kvm: Return immediately on error in kvm_arch_init() target/arm/kvm-rme: Initialize realm hw/arm/virt: Add support for Arm RME hw/arm/virt: Disable DTB randomness for confidential VMs hw/arm/virt: Reserve one bit of guest-physical address for RME target/arm/kvm: Split kvm_arch_get/put_registers target/arm/kvm-rme: Initialize vCPU target/arm/kvm: Create scratch VM as Realm if necessary hw/core/loader: Add ROM loader notifier target/arm/kvm-rme: Populate Realm memory hw/arm/boot: Register Linux BSS section for confidential guests target/arm/kvm-rme: Add Realm Personalization Value parameter target/arm/kvm-rme: Add measurement algorithm property target/arm/cpu: Set number of breakpoints and watchpoints in KVM target/arm/cpu: Set number of PMU counters in KVM target/arm/kvm: Disable Realm reboot target/arm/cpu: Inform about reading confidential CPU registers target/arm/kvm-rme: Enable guest memfd hw/arm/virt: Move virt_flash_create() to machvirt_init() hw/arm/virt: Use RAM instead of flash for confidential guest firmware docs/system/arm/virt.rst | 9 +- docs/system/confidential-guest-support.rst | 1 + qapi/qom.json | 34 +- include/hw/arm/boot.h | 9 + include/hw/arm/virt.h | 2 +- include/hw/loader.h | 15 + include/sysemu/kvm.h | 2 - include/sysemu/kvm_int.h | 1 + target/arm/cpu.h | 10 + target/arm/kvm_arm.h | 25 ++ accel/kvm/kvm-all.c | 34 +- hw/arm/boot.c | 45 ++- hw/arm/virt.c | 118 ++++-- hw/core/loader.c | 15 + target/arm/arm-qmp-cmds.c | 1 + target/arm/cpu.c | 5 + target/arm/cpu64.c | 118 ++++++ target/arm/kvm-rme.c | 413 +++++++++++++++++++++ target/arm/kvm.c | 200 +++++++++- target/i386/kvm/kvm.c | 6 +- target/ppc/kvm.c | 36 +- target/arm/meson.build | 7 +- 22 files changed, 1023 insertions(+), 83 deletions(-) create mode 100644 target/arm/kvm-rme.c