From: Rob Herring <robh@kernel.org>
To: Stefan Berger <stefanb@linux.ibm.com>
Cc: rnsastry@linux.ibm.com, linux-kernel@vger.kernel.org,
jarkko@kernel.org, linux-integrity@vger.kernel.org,
viparash@in.ibm.com, linuxppc-dev@lists.ozlabs.org,
peterhuewe@gmx.de
Subject: Re: [PATCH 0/2] Preserve TPM log across kexec
Date: Thu, 7 Mar 2024 15:42:45 -0600 [thread overview]
Message-ID: <20240307214245.GA3110385-robh@kernel.org> (raw)
In-Reply-To: <b6f74cd0-d1c8-4a6f-a05d-364595c5b079@linux.ibm.com>
On Wed, Mar 06, 2024 at 11:08:20AM -0500, Stefan Berger wrote:
>
>
> On 3/6/24 10:55, Stefan Berger wrote:
> > This series resolves an issue on PowerVM and KVM on Power where the memory
> > the TPM log was held in may become inaccessible or corrupted after a kexec
> > soft reboot. The solution on these two platforms is to store the whole log
> > in the device tree because the device tree is preserved across a kexec with
> > either of the two kexec syscalls.
> >
> FYI: This was the previous attempt that didn't work with the older kexec
> syscall: https://lore.kernel.org/lkml/4afde78d-e138-9eee-50e0-dbd32f4dcfe0@linux.ibm.com/T/#m158630d214837e41858b03d4b025e6f96cb8f251
Doesn't everyone else still need that? Is powerpc the only ones that
care about the old kexec syscall?
Rob
next prev parent reply other threads:[~2024-03-07 21:43 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-06 15:55 [PATCH 0/2] Preserve TPM log across kexec Stefan Berger
2024-03-06 15:55 ` [PATCH 1/2] powerpc/prom_init: Replace linux,sml-base/sml-size with linux,sml-log Stefan Berger
2024-03-07 10:41 ` Michael Ellerman
2024-03-07 15:11 ` Stefan Berger
2024-03-07 20:39 ` Conor Dooley
2024-03-07 21:15 ` Stefan Berger
2024-03-07 21:29 ` Conor Dooley
2024-03-07 21:52 ` Rob Herring
2024-03-08 12:23 ` Stefan Berger
2024-03-08 20:57 ` Rob Herring
2024-03-08 21:26 ` Stefan Berger
2024-03-12 10:32 ` Michael Ellerman
2024-03-12 16:22 ` Rob Herring
2024-03-12 19:15 ` Stefan Berger
2024-03-07 20:11 ` Jarkko Sakkinen
2024-03-06 15:55 ` [PATCH 2/2] tpm: of: If available Use linux,sml-log to get the log and its size Stefan Berger
2024-03-07 10:42 ` Michael Ellerman
2024-03-07 15:00 ` Stefan Berger
2024-03-07 11:35 ` Conor Dooley
2024-03-07 19:57 ` Jarkko Sakkinen
2024-03-07 20:00 ` Jarkko Sakkinen
2024-03-08 12:17 ` Stefan Berger
2024-03-11 20:09 ` Jarkko Sakkinen
2024-03-12 10:35 ` Michael Ellerman
2024-03-12 15:50 ` Jarkko Sakkinen
2024-03-12 19:08 ` Stefan Berger
2024-03-06 16:08 ` [PATCH 0/2] Preserve TPM log across kexec Stefan Berger
2024-03-07 21:42 ` Rob Herring [this message]
2024-03-07 22:32 ` Stefan Berger
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