On Mon, Jun 04, 2018 at 10:55:54PM +0300, Jarkko Sakkinen wrote: > On Thu, May 31, 2018 at 04:29:09PM -0700, Tadeusz Struk wrote: > > The TCG SAPI specification [1] defines a set of functions, which allows > > applications to use the TPM device in either blocking or non-blocking fashion. > > Each command defined by the specification has a corresponding > > Tss2_Sys_<COMMAND>_Prepare() and Tss2_Sys_<COMMAND>_Complete() call, which > > together with Tss2_Sys_ExecuteAsync() is designed to allow asynchronous > > mode of operation. Currently the driver supports only blocking calls, which > > doesn't allow asynchronous operation. This patch changes it and adds support > > for nonblocking write and a new poll function to enable applications using > > the API as designed by the spec. > > The new functionality can be tested using standard TPM tools implemented > > in [2], with modified TCTI from [3]. > > I would need some statistics before I have interest to take these > changes in any form eg use case where this matters in the end. And please CC linux-kernel and linux-security-module. /Jarkko
