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Date:   Mon, 6 Jul 2020 14:06:09 -0400
From:   Stefan Berger <>
To:     Jarkko Sakkinen <>,,,
        Peter Huewe <>,
        Jason Gunthorpe <>, Arnd Bergmann <>,
        Greg Kroah-Hartman <>,
        Sumit Garg <>,
        Alexey Klimov <>,
        James Bottomley <>,
        open list <>
Subject: Re: [PATCH] tpm: Define TPM2_SPACE_BUFFER_SIZE to replace the use of

On 7/3/20 11:56 PM, Jarkko Sakkinen wrote:
> On Thu, Jul 02, 2020 at 04:55:44PM -0700, Jerry Snitselaar wrote:
>> On Fri Jul 03 20, Jarkko Sakkinen wrote:
>>> The size of the buffers for storing context's and sessions can vary from
>>> arch to arch as PAGE_SIZE can be anything between 4 kB and 256 kB (the
>>> maximum for PPC64). Define a fixed buffer size set to 16 kB. This should be
>>> enough for most use with three handles (that is how many we allow at the
>>> moment). Parametrize the buffer size while doing this, so that it is easier
>>> to revisit this later on if required.
>>> Reported-by: Stefan Berger <>
>>> Cc:
>>> Fixes: 745b361e989a ("tpm: infrastructure for TPM spaces")
>>> Signed-off-by: Jarkko Sakkinen <>
>> Reviewed-by: Jerry Snitselaar <>
> Thank you.
> Now only needs tested-by from Stefan.

Tested-by: Stefan Berger <>

> /Jarkko

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