From: Lakshmi Ramasubramanian <nramas@linux.microsoft.com> To: zohar@linux.ibm.com, bauerman@linux.ibm.com, robh@kernel.org, takahiro.akashi@linaro.org, gregkh@linuxfoundation.org, will@kernel.org, catalin.marinas@arm.com, mpe@ellerman.id.au Cc: james.morse@arm.com, sashal@kernel.org, benh@kernel.crashing.org, paulus@samba.org, frowand.list@gmail.com, vincenzo.frascino@arm.com, mark.rutland@arm.com, dmitry.kasatkin@gmail.com, jmorris@namei.org, serge@hallyn.com, pasha.tatashin@soleen.com, allison@lohutok.net, masahiroy@kernel.org, bhsharma@redhat.com, mbrugger@suse.com, hsinyi@chromium.org, tao.li@vivo.com, christophe.leroy@c-s.fr, prsriva@linux.microsoft.com, balajib@linux.microsoft.com, linux-integrity@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linuxppc-dev@vger.kernel.org Subject: [PATCH v14 6/6] arm64: Add IMA log information in kimage used for kexec Date: Mon, 4 Jan 2021 11:26:02 -0800 [thread overview] Message-ID: <20210104192602.10131-7-nramas@linux.microsoft.com> (raw) In-Reply-To: <20210104192602.10131-1-nramas@linux.microsoft.com> Address and size of the buffer containing the IMA measurement log need to be passed from the current kernel to the next kernel on kexec. Any existing "linux,ima-kexec-buffer" property in the device tree needs to be removed and its corresponding memory reservation in the currently running kernel needs to be freed. The address and size of the current kernel's IMA measurement log need to be added to the device tree's IMA kexec buffer node and memory for the buffer needs to be reserved for the log to be carried over to the next kernel on the kexec call. Add address and size fields to "struct kimage_arch" for ARM64 platform to hold the address and size of the IMA measurement log buffer. Remove any existing "linux,ima-kexec-buffer" property in the device tree and free the corresponding memory reservation in the currently running kernel. Add "linux,ima-kexec-buffer" property to the device tree and reserve the memory for storing the IMA log that needs to be passed from the current kernel to the next one. Update CONFIG_KEXEC_FILE to select CONFIG_HAVE_IMA_KEXEC to indicate that the IMA measurement log information is present in the device tree for ARM64. Co-developed-by: Prakhar Srivastava <prsriva@linux.microsoft.com> Signed-off-by: Prakhar Srivastava <prsriva@linux.microsoft.com> Signed-off-by: Lakshmi Ramasubramanian <nramas@linux.microsoft.com> --- arch/arm64/Kconfig | 1 + arch/arm64/include/asm/kexec.h | 5 +++++ 2 files changed, 6 insertions(+) diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index a6b5b7ef40ae..312b4d5ad232 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -1095,6 +1095,7 @@ config KEXEC config KEXEC_FILE bool "kexec file based system call" select KEXEC_CORE + select HAVE_IMA_KEXEC if IMA help This is new version of kexec system call. This system call is file based and takes file descriptors as system call argument diff --git a/arch/arm64/include/asm/kexec.h b/arch/arm64/include/asm/kexec.h index d24b527e8c00..2bd19ccb6c43 100644 --- a/arch/arm64/include/asm/kexec.h +++ b/arch/arm64/include/asm/kexec.h @@ -100,6 +100,11 @@ struct kimage_arch { void *elf_headers; unsigned long elf_headers_mem; unsigned long elf_headers_sz; + +#ifdef CONFIG_IMA_KEXEC + phys_addr_t ima_buffer_addr; + size_t ima_buffer_size; +#endif }; extern const struct kexec_file_ops kexec_image_ops; -- 2.29.2
WARNING: multiple messages have this Message-ID (diff)
From: Lakshmi Ramasubramanian <nramas@linux.microsoft.com> To: zohar@linux.ibm.com, bauerman@linux.ibm.com, robh@kernel.org, takahiro.akashi@linaro.org, gregkh@linuxfoundation.org, will@kernel.org, catalin.marinas@arm.com, mpe@ellerman.id.au Cc: mark.rutland@arm.com, benh@kernel.crashing.org, bhsharma@redhat.com, tao.li@vivo.com, paulus@samba.org, vincenzo.frascino@arm.com, frowand.list@gmail.com, sashal@kernel.org, masahiroy@kernel.org, jmorris@namei.org, linux-arm-kernel@lists.infradead.org, serge@hallyn.com, devicetree@vger.kernel.org, pasha.tatashin@soleen.com, linuxppc-dev@vger.kernel.org, prsriva@linux.microsoft.com, hsinyi@chromium.org, allison@lohutok.net, christophe.leroy@c-s.fr, mbrugger@suse.com, balajib@linux.microsoft.com, dmitry.kasatkin@gmail.com, linux-kernel@vger.kernel.org, james.morse@arm.com, linux-integrity@vger.kernel.org Subject: [PATCH v14 6/6] arm64: Add IMA log information in kimage used for kexec Date: Mon, 4 Jan 2021 11:26:02 -0800 [thread overview] Message-ID: <20210104192602.10131-7-nramas@linux.microsoft.com> (raw) In-Reply-To: <20210104192602.10131-1-nramas@linux.microsoft.com> Address and size of the buffer containing the IMA measurement log need to be passed from the current kernel to the next kernel on kexec. Any existing "linux,ima-kexec-buffer" property in the device tree needs to be removed and its corresponding memory reservation in the currently running kernel needs to be freed. The address and size of the current kernel's IMA measurement log need to be added to the device tree's IMA kexec buffer node and memory for the buffer needs to be reserved for the log to be carried over to the next kernel on the kexec call. Add address and size fields to "struct kimage_arch" for ARM64 platform to hold the address and size of the IMA measurement log buffer. Remove any existing "linux,ima-kexec-buffer" property in the device tree and free the corresponding memory reservation in the currently running kernel. Add "linux,ima-kexec-buffer" property to the device tree and reserve the memory for storing the IMA log that needs to be passed from the current kernel to the next one. Update CONFIG_KEXEC_FILE to select CONFIG_HAVE_IMA_KEXEC to indicate that the IMA measurement log information is present in the device tree for ARM64. Co-developed-by: Prakhar Srivastava <prsriva@linux.microsoft.com> Signed-off-by: Prakhar Srivastava <prsriva@linux.microsoft.com> Signed-off-by: Lakshmi Ramasubramanian <nramas@linux.microsoft.com> --- arch/arm64/Kconfig | 1 + arch/arm64/include/asm/kexec.h | 5 +++++ 2 files changed, 6 insertions(+) diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index a6b5b7ef40ae..312b4d5ad232 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -1095,6 +1095,7 @@ config KEXEC config KEXEC_FILE bool "kexec file based system call" select KEXEC_CORE + select HAVE_IMA_KEXEC if IMA help This is new version of kexec system call. This system call is file based and takes file descriptors as system call argument diff --git a/arch/arm64/include/asm/kexec.h b/arch/arm64/include/asm/kexec.h index d24b527e8c00..2bd19ccb6c43 100644 --- a/arch/arm64/include/asm/kexec.h +++ b/arch/arm64/include/asm/kexec.h @@ -100,6 +100,11 @@ struct kimage_arch { void *elf_headers; unsigned long elf_headers_mem; unsigned long elf_headers_sz; + +#ifdef CONFIG_IMA_KEXEC + phys_addr_t ima_buffer_addr; + size_t ima_buffer_size; +#endif }; extern const struct kexec_file_ops kexec_image_ops; -- 2.29.2 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2021-01-04 19:27 UTC|newest] Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-01-04 19:25 [PATCH v14 0/6] Carry forward IMA measurement log on kexec on ARM64 Lakshmi Ramasubramanian 2021-01-04 19:25 ` Lakshmi Ramasubramanian 2021-01-04 19:25 ` [PATCH v14 1/6] ima: Move arch_ima_add_kexec_buffer() to ima Lakshmi Ramasubramanian 2021-01-04 19:25 ` Lakshmi Ramasubramanian 2021-01-04 19:25 ` [PATCH v14 2/6] powerpc: Move arch independent ima kexec functions to drivers/of/kexec.c Lakshmi Ramasubramanian 2021-01-04 19:25 ` Lakshmi Ramasubramanian 2021-01-13 2:14 ` Thiago Jung Bauermann 2021-01-13 2:14 ` Thiago Jung Bauermann 2021-01-04 19:25 ` [PATCH v14 3/6] kexec: Use fdt_appendprop_addrrange() to add ima buffer to FDT Lakshmi Ramasubramanian 2021-01-04 19:25 ` Lakshmi Ramasubramanian 2021-01-04 19:26 ` [PATCH v14 4/6] powerpc: Delete unused functions Lakshmi Ramasubramanian 2021-01-04 19:26 ` Lakshmi Ramasubramanian 2021-01-12 23:30 ` Mimi Zohar 2021-01-12 23:30 ` Mimi Zohar 2021-01-12 23:57 ` Lakshmi Ramasubramanian 2021-01-12 23:57 ` Lakshmi Ramasubramanian 2021-01-13 2:15 ` Thiago Jung Bauermann 2021-01-13 2:15 ` Thiago Jung Bauermann 2021-01-04 19:26 ` [PATCH v14 5/6] arm64: Free DTB buffer if fdt_open_into() fails Lakshmi Ramasubramanian 2021-01-04 19:26 ` Lakshmi Ramasubramanian 2021-01-04 19:26 ` Lakshmi Ramasubramanian [this message] 2021-01-04 19:26 ` [PATCH v14 6/6] arm64: Add IMA log information in kimage used for kexec Lakshmi Ramasubramanian 2021-01-12 23:28 ` Mimi Zohar 2021-01-12 23:28 ` Mimi Zohar 2021-01-12 23:54 ` Lakshmi Ramasubramanian 2021-01-12 23:54 ` Lakshmi Ramasubramanian 2021-01-13 2:16 ` Thiago Jung Bauermann 2021-01-13 2:16 ` Thiago Jung Bauermann 2021-01-12 14:42 ` [PATCH v14 0/6] Carry forward IMA measurement log on kexec on ARM64 Rob Herring 2021-01-12 14:42 ` Rob Herring 2021-01-12 18:05 ` Mimi Zohar 2021-01-12 18:05 ` Mimi Zohar 2021-01-12 18:24 ` Lakshmi Ramasubramanian 2021-01-12 18:24 ` Lakshmi Ramasubramanian 2021-01-12 18:45 ` Thiago Jung Bauermann 2021-01-12 18:45 ` Thiago Jung Bauermann 2021-01-12 18:23 ` Lakshmi Ramasubramanian 2021-01-12 18:23 ` Lakshmi Ramasubramanian
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