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Wed, 27 Jan 2021 16:54:37 +0000 Received: from mail.kernel.org ([198.145.29.99]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1l4o5S-0007FV-O5 for linux-arm-kernel@lists.infradead.org; Wed, 27 Jan 2021 16:54:35 +0000 Received: by mail.kernel.org (Postfix) with ESMTPSA id 4316864D99; Wed, 27 Jan 2021 16:54:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1611766473; bh=D9YLBdJdTvUNtknF0Gfd+7SXSDNwVLy+RyPU5K0m1Go=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=ISOyAq502Cz78bk8HmAYUdmTvgZNMOXRLMuYjduLnDxuguzbvGQGgf+sSEyb0N1cV fzSKKE2DFqadoUCHI2C9JCWBTjawgUo46jgvaqgBvHMnbf9GFvwUmWwweyWKSx5pj5 IAmxe/7Cyc+8A08/7I3fpUb8KzAgOnklc0xKI3PqC/dy8ETInOVHBxudW4/hxulEW1 BIy4r8AHvfPULqHRIAmDfbfL3k2wCulXcVQJZuE/9y1RVDwtg/n4zeIkNZe8JrrrpZ xxU0ezYStJ5XjQIF4moS2Jop2C3m+oYA0DTYotqmaGWsFh82pKxSCu8ki8hePxVHWo rQYbnNT8I6bBg== Date: Wed, 27 Jan 2021 16:54:24 +0000 From: Will Deacon To: Lakshmi Ramasubramanian Subject: Re: [PATCH v15 10/10] arm64: Add IMA log information in kimage used for kexec Message-ID: <20210127165424.GB358@willie-the-truck> References: <20210115173017.30617-1-nramas@linux.microsoft.com> <20210115173017.30617-11-nramas@linux.microsoft.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20210115173017.30617-11-nramas@linux.microsoft.com> User-Agent: Mutt/1.10.1 (2018-07-13) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210127_115434_867602_1BF7469F X-CRM114-Status: GOOD ( 21.32 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: mark.rutland@arm.com, benh@kernel.crashing.org, bhsharma@redhat.com, tao.li@vivo.com, zohar@linux.ibm.com, paulus@samba.org, vincenzo.frascino@arm.com, frowand.list@gmail.com, sashal@kernel.org, mpe@ellerman.id.au, masahiroy@kernel.org, jmorris@namei.org, takahiro.akashi@linaro.org, linux-arm-kernel@lists.infradead.org, catalin.marinas@arm.com, serge@hallyn.com, devicetree@vger.kernel.org, pasha.tatashin@soleen.com, 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, gregkh@linuxfoundation.org, linux-integrity@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, bauerman@linux.ibm.com Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Fri, Jan 15, 2021 at 09:30:17AM -0800, Lakshmi Ramasubramanian wrote: > 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. > > Add address and size fields to "struct kimage_arch" for ARM64 platform > to hold the address and size of the IMA measurement log buffer. > > Update CONFIG_KEXEC_FILE to select CONFIG_HAVE_IMA_KEXEC, if CONFIG_IMA > is enabled, to indicate that the IMA measurement log information is > present in the device tree for ARM64. > > Co-developed-by: Prakhar Srivastava > Signed-off-by: Prakhar Srivastava > Signed-off-by: Lakshmi Ramasubramanian > Reviewed-by: Thiago Jung Bauermann > --- > 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 1d466addb078..ea7f7fe3dccd 100644 > --- a/arch/arm64/Kconfig > +++ b/arch/arm64/Kconfig > @@ -1094,6 +1094,7 @@ 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 Why do these need to be in the arch structure instead of 'struct kimage'? Will _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel