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From: Tadeusz Struk <tstruk@gmail.com>
To: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>,
	Mario Limonciello <mario.limonciello@dell.com>,
	Peter Huewe <peterhuewe@gmx.de>, Jason Gunthorpe <jgg@ziepe.ca>,
	Arnd Bergmann <arnd@arndb.de>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	linux-integrity@vger.kernel.org, linux-kernel@vger.kernel.org,
	Jeffrin Jose T <jeffrin@rajagiritech.edu.in>,
	Alex Guzman <alex@guzman.io>
Subject: Re: [PATCH] tpm: Revert "tpm: fix invalid locking in NONBLOCKING mode"
Date: Wed, 27 May 2020 21:40:25 -0700	[thread overview]
Message-ID: <e939739d-d193-95e8-c142-4efa57be2502@gmail.com> (raw)
In-Reply-To: <20200528003040.GA4781@linux.intel.com>

On 5/27/20 5:30 PM, Jarkko Sakkinen wrote:
>> This won't help if the message is read by an async tcti. If the problem lies
>> in the chip get locality code, perhaps this could help to debug the root-cause
>> instead of masking it out in the upper layer code:
> What is TCTI and async TCTI? Not following.

TPM Command Transmission Interface (TCTI) as defined by TCG in
https://trustedcomputinggroup.org/resource/tss-tcti-specification/

the reason we added the O_NONBLOCK mode was to satisfy the TCG spec for async TCTI.

Thanks,
Tadeusz

  reply	other threads:[~2020-05-28  4:40 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-26 18:32 [PATCH] tpm: Revert "tpm: fix invalid locking in NONBLOCKING mode" Mario Limonciello
2020-05-26 19:14 ` James Bottomley
2020-05-26 19:23   ` Mario.Limonciello
2020-05-26 19:38     ` James Bottomley
2020-05-26 22:19       ` Alex Guzman
2020-05-26 23:06         ` James Bottomley
2020-05-26 23:31           ` Alex Guzman
2020-05-27  0:18             ` James Bottomley
2020-05-27 20:09       ` Jarkko Sakkinen
2020-05-27 20:18         ` Mario.Limonciello
2020-05-28  0:43           ` Jarkko Sakkinen
2020-05-28  0:59             ` Mario.Limonciello
2020-05-28  6:53               ` Jarkko Sakkinen
2020-05-26 19:39   ` Tadeusz Struk
2020-05-26 20:00     ` James Bottomley
2020-05-26 21:33       ` Tadeusz Struk
2020-05-26 22:34         ` Alex Guzman
2020-05-28  0:30     ` Jarkko Sakkinen
2020-05-28  4:40       ` Tadeusz Struk [this message]
2020-05-28  6:55         ` Jarkko Sakkinen

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