linux-kernel - Re: [PATCH 2/2] tpm: of: If available Use linux,sml-log to get the log and its size

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Message-ID: <663a3834-056e-4dda-99dd-16ee8734100e@linux.ibm.com>
Date: Fri, 8 Mar 2024 07:17:54 -0500
From: Stefan Berger <stefanb@...ux.ibm.com>
To: Jarkko Sakkinen <jarkko@...nel.org>, mpe@...erman.id.au,
        linux-integrity@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org
Cc: linux-kernel@...r.kernel.org, rnsastry@...ux.ibm.com, peterhuewe@....de,
        viparash@...ibm.com
Subject: Re: [PATCH 2/2] tpm: of: If available Use linux,sml-log to get the
 log and its size



On 3/7/24 15:00, Jarkko Sakkinen wrote:
> On Thu Mar 7, 2024 at 9:57 PM EET, Jarkko Sakkinen wrote:
>> in short summary: s/Use/use/
>>
>> On Wed Mar 6, 2024 at 5:55 PM EET, Stefan Berger wrote:
>>> If linux,sml-log is available use it to get the TPM log rather than the
>>> pointer found in linux,sml-base. This resolves an issue on PowerVM and KVM
>>> on Power where after a kexec the memory pointed to by linux,sml-base may
>>> have been corrupted. Also, linux,sml-log has replaced linux,sml-base and
>>> linux,sml-size on these two platforms.
>>>
>>> Signed-off-by: Stefan Berger <stefanb@...ux.ibm.com>
>>
>> So shouldn't this have a fixed tag, or not?
> 
> In English: do we want this to be backported to stable kernel releases or not?

Ideally, yes. v3 will have 3 patches and all 3 of them will have to be 
backported *together* and not applied otherwise if any one of them 
fails. Can this be 'guaranteed'?

> 
> BR, Jarkko