On Sun, Mar 13, 2016 at 06:54:30PM -0400, Stefan Berger wrote: > The following series of patches implements a multi-instance vTPM > proxy driver that can dynamically create TPM 'server' and client device > pairs. > > Using an ioctl on the provided /dev/vtpmx, a client-side vTPM device > and a server side file descriptor is created. The file descriptor must > be passed to a TPM emulator. The device driver will initialize the > emulated TPM using TPM 1.2 or TPM 2 startup commands and it will read > the command durations from the device in case of a TPM 1.2. The choice > of emulated TPM device (1.2 or 2) must be provided with a flag in > the ioctl. > > The driver is based on a recent checkout of James Morris's 'next' > branch and uses several recently posted patches from Jason and Jarkko.
I don't remember if I said this but up to the IDR patch I merged patches to next (at the same day you sent this) so for v9 you can only include top four changes. /Jarkko > Stefan > > v7->v8: > - minor tweaks on the documentation > - Reordered function calls in the VTPM proxy driver's server side release > function so that a client holding the 'ops' lock releases it before the > driver tries to grab the lock when unregistering the device. > > v6->v7: > - Adjusted name of driver to tpm_vtpm_proxy from tpm_vtpm. Adjust function > names, names of structures, and names of constants. > - Adjusted IOCTL to use magic 0xa1 rather than the completely used 0xa0. > - Extended driver documentation and added documentation of ioctl. > - Moved test program to own project (dropped patch 11). > > v5->v6: > - Adapted errno's for unsupported flags and ioctls following Jason's > comments > > v4->v5: > - Introduced different error codes for unsupported flags and ioctls > - Added documentation patch > > > Jason Gunthorpe (4): > tpm: Get rid of chip->pdev > tpm: Get rid of devname > tpm: Provide strong locking for device removal > tpm: Split out the devm stuff from tpmm_chip_alloc > > Stefan Berger (6): > tpm: Get rid of module locking > tpm: Replace device number bitmap with IDR > tpm: Introduce TPM_CHIP_FLAG_VIRTUAL > tpm: Proxy driver for supporting multiple emulated TPMs > tpm: Initialize TPM and get durations and timeouts > tpm: Add documentation for the tpm_vtpm device driver > > Documentation/ioctl/ioctl-number.txt | 1 + > Documentation/tpm/tpm_vtpm_proxy.txt | 71 ++++ > drivers/char/tpm/Kconfig | 10 + > drivers/char/tpm/Makefile | 1 + > drivers/char/tpm/tpm-chip.c | 221 ++++++++---- > drivers/char/tpm/tpm-dev.c | 15 +- > drivers/char/tpm/tpm-interface.c | 50 +-- > drivers/char/tpm/tpm-sysfs.c | 22 +- > drivers/char/tpm/tpm.h | 30 +- > drivers/char/tpm/tpm2-cmd.c | 8 +- > drivers/char/tpm/tpm_atmel.c | 14 +- > drivers/char/tpm/tpm_eventlog.c | 2 +- > drivers/char/tpm/tpm_eventlog.h | 2 +- > drivers/char/tpm/tpm_i2c_atmel.c | 16 +- > drivers/char/tpm/tpm_i2c_infineon.c | 6 +- > drivers/char/tpm/tpm_i2c_nuvoton.c | 24 +- > drivers/char/tpm/tpm_infineon.c | 22 +- > drivers/char/tpm/tpm_nsc.c | 20 +- > drivers/char/tpm/tpm_tis.c | 18 +- > drivers/char/tpm/tpm_vtpm_proxy.c | 649 > +++++++++++++++++++++++++++++++++++ > include/uapi/linux/Kbuild | 1 + > include/uapi/linux/vtpm_proxy.h | 42 +++ > 22 files changed, 1066 insertions(+), 179 deletions(-) > create mode 100644 Documentation/tpm/tpm_vtpm_proxy.txt > create mode 100644 drivers/char/tpm/tpm_vtpm_proxy.c > create mode 100644 include/uapi/linux/vtpm_proxy.h > > -- > 2.4.3 >
