linux-kernel - Re: [RFC][PATCH v1 0/1] Add support for arm64 to carry ima measurement log in kexec_file

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Message-Id: <20190907035654.DF8B2208C3@mail.kernel.org>
Date:   Fri, 06 Sep 2019 20:56:54 -0700
From:   Stephen Boyd <sboyd@...nel.org>
To:     Prakhar Srivastava <prsriva@...ux.microsoft.com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:     arnd@...db.de, jean-philippe@...aro.org, allison@...utok.net,
        kristina.martsenko@....org, yamada.masahiro@...ionext.com,
        duwe@....de, mark.rutland@....com, tglx@...utronix.de,
        takahiro.akashi@...aro.org, james.morse@....org,
        catalin.marinas@....com, bauerman@...ux.ibm.com
Subject: Re: [RFC][PATCH v1 0/1] Add support for arm64 to carry ima measurement log in kexec_file_load

Quoting Prakhar Srivastava (2019-09-06 16:51:09)
> Add support for arm64 to carry ima measurement log
> to the next kexec'ed session triggered via kexec_file_load.
> - Top of Linux 5.3-rc6
> 
> Currently during kexec the kernel file signatures are/can be validated
> prior to actual load, the information(PE/ima signature) is not carried
> to the next session. This lead to loss of information.
> 
> Carrying forward the ima measurement log to the next kexec'ed session.
> This allows a verifying party to get the entire runtime event log since
> the last full reboot since that is when PCRs were last reset.
> 
> Prakhar Srivastava (1):
>   Add support for arm64 to carry ima measurement log in kexec_file_load

Did anything change from the last round? Please include changelogs so we
know what to look for.