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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Date: Tue, 12 Mar 2024 17:50:57 +0200
From: "Jarkko Sakkinen" <jarkko@...nel.org>
To: "Michael Ellerman" <mpe@...erman.id.au>, "Stefan Berger"
 <stefanb@...ux.ibm.com>, <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 Tue Mar 12, 2024 at 12:35 PM EET, Michael Ellerman wrote:
> Stefan Berger <stefanb@...ux.ibm.com> writes:
> > 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'?
>
> You can use Depends-on: <previous commit SHA> to indicate the relationship.
>
> cheers

Thanks, I've missed depends-on tag.

Stefan, please add also "Cc: stable@...r.kernel.org" just to make sure
that I don't forget to add it.

Right, and since these are so small scoped commits, and bug fixes in
particular, it is also possible to do PR during the release cycle.

BR, Jarkko