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: <CZR6YT6T2RS0.KKPTUAAVXMXF@kernel.org>
Date: Mon, 11 Mar 2024 22:09:24 +0200
From: "Jarkko Sakkinen" <jarkko@...nel.org>
To: "Stefan Berger" <stefanb@...ux.ibm.com>, <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 Fri Mar 8, 2024 at 2:17 PM EET, Stefan Berger wrote:
>
>
> 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'?

All of them will end up to stable if the following conditions hold:

- All have a fixes tag.
- All have "Cc: stable@...r.kernel.org".
- We agree in the review process that they are all legit fixes.

BR, Jarkko