linux-kernel - Re: [RFC PATCH] tpm, tpm_tis: Introduce TPM_IOC_SET

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Message-Id: <D5BB5GX4KEUO.VJ2G9G9QKYRR@kernel.org>
Date: Sat, 02 Nov 2024 03:39:22 +0200
From: "Jarkko Sakkinen" <jarkko@...nel.org>
To: "Jarkko Sakkinen" <jarkko@...nel.org>, <ross.philipson@...cle.com>,
 "Jonathan Corbet" <corbet@....net>, "Peter Huewe" <peterhuewe@....de>,
 "Jason Gunthorpe" <jgg@...pe.ca>
Cc: <James.Bottomley@...senpartnership.com>, <andrew.cooper3@...rix.com>,
 <ardb@...nel.org>, <baolu.lu@...ux.intel.com>, <bp@...en8.de>,
 <dave.hansen@...ux.intel.com>, <davem@...emloft.net>,
 <dpsmith@...rtussolutions.com>, <dwmw2@...radead.org>,
 <ebiederm@...ssion.com>, <herbert@...dor.apana.org.au>, <hpa@...or.com>,
 <iommu@...ts.linux-foundation.org>, <kanth.ghatraju@...cle.com>,
 <kexec@...ts.infradead.org>, <linux-crypto@...r.kernel.org>,
 <linux-doc@...r.kernel.org>, <linux-efi@...r.kernel.org>,
 <linux-integrity@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
 <luto@...capital.net>, <mingo@...hat.com>, <mjg59@...f.ucam.org>,
 <nivedita@...m.mit.edu>, <tglx@...utronix.de>,
 <trenchboot-devel@...glegroups.com>, <x86@...nel.org>
Subject: Re: [RFC PATCH] tpm, tpm_tis: Introduce TPM_IOC_SET_LOCALITY

On Sat Nov 2, 2024 at 3:37 AM EET, Jarkko Sakkinen wrote:
> DRTM needs to be able to set the locality used by kernel. Provide
> TPM_IOC_SET_LOCALITY operation for this purpose. It is enabled only if
> the kernel command-line has 'tpm.set_locality_enabled=1'. The operation
> is one-shot allowed only for tpm_tis for the moment.
>
> Signed-off-by: Jarkko Sakkinen <jarkko@...nel.org>

I hope you could take it from there if this works for you in the big
pic, and address possible comments, thanks.

BR, Jarkko