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Mon, 02 Dec 2024 17:22:26 -0800 (PST) X-Google-Smtp-Source: AGHT+IHBV6VFt7DuoJL3pKgqlDpBzWxmRBzOP6uqWUIOrzw83q0XzALRysgqcdQWq3lT5Z+Y++WC7A== X-Received: by 2002:a17:902:ecca:b0:215:63a0:b58c with SMTP id d9443c01a7336-215bd24bb6fmr8483965ad.46.1733188946066; Mon, 02 Dec 2024 17:22:26 -0800 (PST) Received: from [10.72.112.107] ([43.228.180.230]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-21538ecb0e8sm71320085ad.63.2024.12.02.17.22.22 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 02 Dec 2024 17:22:25 -0800 (PST) Message-ID: <2285bc57-bd9a-4696-ac29-73bb233c9b3e@redhat.com> Date: Tue, 3 Dec 2024 11:22:19 +1000 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 1/1] arm64: rsi: Add automatic arm-cca-guest module loading To: Jeremy Linton , linux-arm-kernel@lists.infradead.org Cc: steven.price@arm.com, sami.mujawar@arm.com, suzuki.poulose@arm.com, will@kernel.org, catalin.marinas@arm.com, linux-kernel@vger.kernel.org References: <20241203000156.72451-1-jeremy.linton@arm.com> <20241203000156.72451-2-jeremy.linton@arm.com> Content-Language: en-US From: Gavin Shan In-Reply-To: <20241203000156.72451-2-jeremy.linton@arm.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 12/3/24 10:01 AM, Jeremy Linton wrote: > The TSM module provides both guest identification as well as > attestation when a guest is run in CCA mode. Lets assure by creating a > dummy platform device that the module is automatically loaded during > boot. The TSM module will be loaded by udev daemon after it receives > the device addition event. Once it is in place it can be used earlier > in the boot process to say decrypt a LUKS rootfs. > > Signed-off-by: Jeremy Linton > --- > arch/arm64/include/asm/rsi.h | 2 ++ > arch/arm64/kernel/rsi.c | 15 +++++++++++++++ > drivers/virt/coco/arm-cca-guest/arm-cca-guest.c | 8 ++++++++ > 3 files changed, 25 insertions(+) > Reviewed-by: Gavin Shan