linux-kernel - Re: [PATCH v3 1/3] selftests: tpm2: Probe for available PCR bank

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Message-ID: <YaVkMF8aKuef4K48@iki.fi>
Date:   Tue, 30 Nov 2021 01:37:20 +0200
From:   Jarkko Sakkinen <jarkko@...nel.org>
To:     Stefan Berger <stefanb@...ux.ibm.com>
Cc:     Stefan Berger <stefanb@...ux.vnet.ibm.com>,
        linux-integrity@...r.kernel.org, peterhuewe@....de,
        linux-kernel@...r.kernel.org, linux-kselftest@...r.kernel.org,
        skhan@...uxfoundation.org
Subject: Re: [PATCH v3 1/3] selftests: tpm2: Probe for available PCR bank

On Fri, Nov 26, 2021 at 10:43:42PM -0500, Stefan Berger wrote:
> 
> On 11/26/21 19:29, Jarkko Sakkinen wrote:
> > On Wed, 2021-11-24 at 19:38 -0500, Stefan Berger wrote:
> > > From: Stefan Berger <stefanb@...ux.ibm.com>
> > > 
> > > Probe for an available PCR bank to accommodate devices that do not have a
> > What does "probing for an vailable PCR bank" even mean?
> 
> Checking ? Testing ? What's the difference to those words?

This would an exact description:

"Some devices do not have SHA1 bank available. Try to use SHA256 as a
fallback when this occurs."

It does not leave any open territory what the patch does. It does exactly
this, not more or less.

/Jarkko