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[59.124.168.89]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-2e06e16d6d2sm5671744a91.2.2024.09.27.06.41.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 27 Sep 2024 06:41:52 -0700 (PDT) From: Max Hsu Subject: [PATCH RFC v2 0/3] riscv: add Svukte extension Date: Fri, 27 Sep 2024 21:41:42 +0800 Message-Id: <20240927-dev-maxh-svukte-rebase-2-v2-0-9afe57c33aee@sifive.com> MIME-Version: 1.0 X-B4-Tracking: v=1; b=H4sIABa29mYC/6tWKk4tykwtVrJSqFYqSi3LLM7MzwNyjHQUlJIzE vPSU3UzU4B8JSMDIxMDSyNz3ZTUMt3cxIoM3eKy0uySVN2i1KTE4lRdI13TZJMUI0uzFENLEwM loPaCotS0zAqw0dFKQW7OSrG1tQB4a8FLbwAAAA== X-Change-ID: 20240927-dev-maxh-svukte-rebase-2-5c4d296d1940 To: Conor Dooley , Rob Herring , Krzysztof Kozlowski , Paul Walmsley , Palmer Dabbelt , Albert Ou , Anup Patel , Atish Patra Cc: Palmer Dabbelt , linux-riscv@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, kvm-riscv@lists.infradead.org, Max Hsu , Samuel Holland X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=1609; i=max.hsu@sifive.com; h=from:subject:message-id; bh=kXRwG34UI+bturoVzhgeOOxPV0f/Bx4DS5Ky79B+J7c=; b=owEB7QES/pANAwAKAdID/Z0HeUC9AcsmYgBm9rYeApPCCtbRKlNa0fE1A0kbxZJAywkNuCj78 NBFhfYWq4mJAbMEAAEKAB0WIQTqXmcbOhS2KZE9X2jSA/2dB3lAvQUCZva2HgAKCRDSA/2dB3lA vcpOC/0VaRoc0IjaAnv5H9+vh7FVkndqjkCNsVcqxk7vUeC9xBFqJEoAHh5Dl03M8SXUcJ8tph+ kFnL4hsHgu0u/UtJ6QcJaL+7CCnhKx+7tQFuviIbbm4knj91J+2iFU0cIHheHEn26UHvx1oguar gxMGJo+JZMRcVhWae2ABGXQx9YY8kENuIRar1jmm2qFfhvL5hAHp4MuT1XWx3KTzqxwQLNt2VQm hbNVCJA0Lb7EXREcgCeKddpxezeHTlJiiUlMFEOWo/waRN/8XRYhddDP3fdSUf5gWc/1Qe9kcW9 quTNevQGuK0XZM4K3EgGpRN0C3wxIDdHlcxrI3xNihgTxIPbQF9kaHOnUfxLrfbpeGc4qXy9VQC b4M2V68cTEUW/+cEe2lz77WnQSGlvWTsOz+tJaIm2NTSASK6jQHC1xWzxDiyCHYMk3v2i58wV7t yi4jBX8y+8xIyEZ6Ae4U0cA1xHOQQZlVSqJ+/DZFECCRAmqfnyNjygsleoVQ/eDg2oaU8= X-Developer-Key: i=max.hsu@sifive.com; a=openpgp; fpr=EA5E671B3A14B629913D5F68D203FD9D077940BD X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240927_064154_229841_FD8A9DA6 X-CRM114-Status: UNSURE ( 7.95 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-riscv@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-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org RISC-V privileged spec will be added with Svukte extension [1] Svukte introduce senvcfg.UKTE and hstatus.HUKTE bitfield. which makes user-mode access to supervisor memory raise page faults in constant time, mitigating attacks that attempt to discover the supervisor software's address-space layout. The following patches add - dt-binding of Svukte ISA string - CSR bit definition, ISA detection, senvcfg.UKTE enablement in kernel - KVM ONE_REG support for Svukte extension Changes in v2: - rebase on riscv/for-next (riscv-for-linus-6.12-mw1) - modify the description of dt-binding on Svukte ISA string - Link to v1: https://lore.kernel.org/all/20240920-dev-maxh-svukte-rebase-v1-0-7864a88a62bd@sifive.com/ Link: https://github.com/riscv/riscv-isa-manual/pull/1564 [1] Signed-off-by: Max Hsu --- Max Hsu (3): dt-bindings: riscv: Add Svukte entry riscv: Add Svukte extension support riscv: KVM: Add Svukte extension support for Guest/VM Documentation/devicetree/bindings/riscv/extensions.yaml | 9 +++++++++ arch/riscv/include/asm/csr.h | 2 ++ arch/riscv/include/asm/hwcap.h | 1 + arch/riscv/include/uapi/asm/kvm.h | 1 + arch/riscv/kernel/cpufeature.c | 4 ++++ arch/riscv/kvm/vcpu_onereg.c | 1 + 6 files changed, 18 insertions(+) --- base-commit: b3f835cd7339919561866252a11831ead72e7073 change-id: 20240927-dev-maxh-svukte-rebase-2-5c4d296d1940 Best regards,