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From: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
To: linux-integrity@vger.kernel.org
Cc: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>,
	Mimi Zohar <zohar@linux.ibm.com>,
	Jerry Snitselaar <jsnitsel@redhat.com>,
	James Bottomley <James.Bottomley@HansenPartnership.com>,
	Sumit Garg <sumit.garg@linaro.org>,
	Stefan Berger <stefanb@linux.vnet.ibm.com>,
	Jason Gunthorpe <jgg@ziepe.ca>,
	linux-kernel@vger.kernel.org (open list)
Subject: [PATCH v3 0/2] tpm: Detach page allocation from tpm_buf
Date: Thu,  3 Oct 2019 21:51:01 +0300	[thread overview]
Message-ID: <20191003185103.26347-1-jarkko.sakkinen@linux.intel.com> (raw)

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@linux.ibm.com>
Cc: Jerry Snitselaar <jsnitsel@redhat.com>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: Sumit Garg <sumit.garg@linaro.org>
Cc: Stefan Berger <stefanb@linux.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


             reply	other threads:[~2019-10-03 18:51 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-03 18:51 Jarkko Sakkinen [this message]
2019-10-03 18:51 ` [PATCH v3 1/2] tpm: Use GFP_KERNEL for allocating struct tpm_buf Jarkko Sakkinen
2019-10-04  0:25   ` James Bottomley
2019-10-06 10:03     ` Jarkko Sakkinen
2019-10-07 19:12       ` James Bottomley
2019-10-07 23:43         ` Jerry Snitselaar
2019-10-08 22:52         ` Jarkko Sakkinen
2019-10-09 21:36         ` Jarkko Sakkinen
2019-10-11 16:03           ` James Bottomley
2019-10-03 18:51 ` [PATCH v3 2/2] tpm: Detach page allocation from tpm_buf Jarkko Sakkinen
2019-10-04 16:37   ` James Bottomley
2019-10-04 17:37     ` Mimi Zohar
2019-10-04 17:41       ` James Bottomley
2019-10-04 18:24         ` Jerry Snitselaar
2019-10-06 23:32           ` Jarkko Sakkinen
2019-10-04 19:01     ` Jarkko Sakkinen

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