diff options
| author | Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> | 2020-07-03 01:55:59 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-08-19 08:16:27 +0200 |
| commit | 1a2e558c8b3084a292f461fb9adca5bb78792ee5 (patch) | |
| tree | e9dda9b8b58fac1e8ac39e8248e6c339d20c27e8 /include/linux | |
| parent | 169d55c486f895d05f190775a605d22ca6606a6d (diff) | |
tpm: Unify the mismatching TPM space buffer sizes
commit 6c4e79d99e6f42b79040f1a33cd4018f5425030b upstream.
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.
Cc: stable@vger.kernel.org
Reported-by: Stefan Berger <stefanb@linux.ibm.com>
Fixes: 745b361e989a ("tpm: infrastructure for TPM spaces")
Reviewed-by: Jerry Snitselaar <jsnitsel@redhat.com>
Tested-by: Stefan Berger <stefanb@linux.ibm.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/tpm.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/tpm.h b/include/linux/tpm.h index 53c0ea9ec9df..77fdc988c610 100644 --- a/include/linux/tpm.h +++ b/include/linux/tpm.h @@ -93,6 +93,7 @@ struct tpm_space { u8 *context_buf; u32 session_tbl[3]; u8 *session_buf; + u32 buf_size; }; struct tpm_bios_log { |