linux-kernel - [PATCH v3 0/2] tpm: Detach page allocation from tpm

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Date:   Thu,  3 Oct 2019 21:51:01 +0300
From:   Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>
To:     linux-integrity@...r.kernel.org
Cc:     Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>,
        Mimi Zohar <zohar@...ux.ibm.com>,
        Jerry Snitselaar <jsnitsel@...hat.com>,
        James Bottomley <James.Bottomley@...senPartnership.com>,
        Sumit Garg <sumit.garg@...aro.org>,
        Stefan Berger <stefanb@...ux.vnet.ibm.com>,
        Jason Gunthorpe <jgg@...pe.ca>,
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH v3 0/2] tpm: Detach page allocation from tpm_buf

As has been seen recently, binding the buffer allocation and tpm_buf
together is sometimes far from optimal. The buffer might come from the
caller namely when tpm_send() is used by another subsystem. In addition we
can stability in call sites w/o rollback (e.g. power events)>

Take allocation out of the tpm_buf framework and make it purely a wrapper
for the data buffer.

Link: https://patchwork.kernel.org/patch/11146585/
Cc: Mimi Zohar <zohar@...ux.ibm.com>
Cc: Jerry Snitselaar <jsnitsel@...hat.com>
Cc: James Bottomley <James.Bottomley@...senPartnership.com>
Cc: Sumit Garg <sumit.garg@...aro.org>
Cc: Stefan Berger <stefanb@...ux.vnet.ibm.com>

Jarkko Sakkinen (2):
  tpm: Use GFP_KERNEL for allocating struct tpm_buf
  tpm: Detach page allocation from tpm_buf

 drivers/char/tpm/tpm-sysfs.c      |  19 ++-
 drivers/char/tpm/tpm.h            |  40 ++---
 drivers/char/tpm/tpm1-cmd.c       | 114 +++++++++----
 drivers/char/tpm/tpm2-cmd.c       | 265 +++++++++++++++++++-----------
 drivers/char/tpm/tpm2-space.c     |  64 +++++---
 drivers/char/tpm/tpm_vtpm_proxy.c |  24 +--
 6 files changed, 333 insertions(+), 193 deletions(-)

-- 
2.20.1