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bcfff8384f
This patch renames active_banks (member of tpm_chip) to allocated_banks, stores the number of allocated PCR banks in nr_allocated_banks (new member of tpm_chip), and replaces the static array with a pointer to a dynamically allocated array. tpm2_get_pcr_allocation() determines if a PCR bank is allocated by checking the mask in the TPML_PCR_SELECTION structure returned by the TPM for TPM2_Get_Capability(). If a bank is not allocated, the TPM returns that bank in TPML_PCR_SELECTION, with all bits in the mask set to zero. In this case, the bank is not included in chip->allocated_banks, to avoid that TPM driver users unnecessarily calculate a digest for that bank. One PCR bank with algorithm set to SHA1 is always allocated for TPM 1.x. As a consequence of the introduction of nr_allocated_banks, tpm_pcr_extend() does not check anymore if the algorithm stored in tpm_chip is equal to zero. Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com> Tested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> |
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.