On Sun, Mar 13, 2016 at 06:54:38PM -0400, Stefan Berger wrote: > This patch implements a proxy driver for supporting multiple emulated TPMs > in a system. > > The driver implements a device /dev/vtpmx that is used to created > a client device pair /dev/tpmX (e.g., /dev/tpm10) and a server side that > is accessed using a file descriptor returned by an ioctl. > The device /dev/tpmX is the usual TPM device created by the core TPM > driver. Applications or kernel subsystems can send TPM commands to it > and the corresponding server-side file descriptor receives these > commands and delivers them to an emulated TPM. Tested-by: Jarkko Sakkinen <jarkko.sakkinen@xxxxxxxxxxxxxxx> My testing procedure was: * Wine running TPM 2.0 simulator on the host side. [1] * QEMU running an OS image with this patch. [2] * Wrote a script for proxying the simulator: tpm2-simulator-vtpm. [3] * Run some smoke tests: python -m unittest -v tpm2_smoke. [3] [1] http://research.microsoft.com/en-us/downloads/35116857-e544-4003-8e7b-584182dc6833/ [2] git://git.infradead.org/users/jjs/buildroot-tpmdd.git [3] git://git.infradead.org/users/jjs/tpm2-scripts.git /Jarkko > Signed-off-by: Stefan Berger <stefanb@xxxxxxxxxxxxxxxxxx> > CC: linux-kernel@xxxxxxxxxxxxxxx > CC: linux-doc@xxxxxxxxxxxxxxx > CC: linux-api@xxxxxxxxxxxxxxx > --- > drivers/char/tpm/Kconfig | 10 + > drivers/char/tpm/Makefile | 1 + > drivers/char/tpm/tpm_vtpm_proxy.c | 572 ++++++++++++++++++++++++++++++++++++++ > include/uapi/linux/Kbuild | 1 + > include/uapi/linux/vtpm_proxy.h | 42 +++ > 5 files changed, 626 insertions(+) > create mode 100644 drivers/char/tpm/tpm_vtpm_proxy.c > create mode 100644 include/uapi/linux/vtpm_proxy.h /Jarkko -- To unsubscribe from this list: send the line "unsubscribe linux-api" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
