linux-kernel - [PATCH v2 0/3] Runtime PM for TPM2 CRB chips

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:	Sat, 18 Jun 2016 17:10:25 +0200
From:	Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>
To:	Peter Huewe <peterhuewe@....de>
Cc:	Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>,
	Jason Gunthorpe <jgunthorpe@...idianresearch.com>,
	linux-kernel@...r.kernel.org (open list),
	tpmdd-devel@...ts.sourceforge.net (moderated list:TPM DEVICE DRIVER)
Subject: [PATCH v2 0/3] Runtime PM for TPM2 CRB chips

These patches implement support for runtime PM with TPM2 CRB chips such
as PTT in Skylake.

This is very naive implementation since the TPM is resumed and supended
for every transaction thus causing total 40 ms latency for each
transaction but for the existing use cases this shouldn't be an issue.

Jarkko Sakkinen (3):
  tpm_crb: fix crb_req_canceled behavior
  tpm, tpm_crb: remove wmb()'s
  tpm, tpm_crb: runtime power management

 drivers/char/tpm/tpm-interface.c |  3 ++
 drivers/char/tpm/tpm_crb.c       | 60 +++++++++++++++++++++++++++++++++++-----
 2 files changed, 56 insertions(+), 7 deletions(-)

-- 
2.7.4