On 8/7/23 10:04, Corvin Köhne wrote:
Hi,
afaik, qemu is making use of the swtpm project too. So, it'd great to
implement it in bhyve.
My TPM passthrough emulation is currently under review. See
https://reviews.freebsd.org/D32961.
I designed it to easily integrate a swtpm in the future. You just
have to implement a new tpm backend by adding a new TPM_EMUL_SET.
Take a look at the tpm_emul_passthru.c file.
Btw: We may have to add additional functions to the TPM_EMUL_SET like
a "startup_tpm" function. See
https://elixir.bootlin.com/qemu/latest/source/include/sysemu/tpm_backend.h#L52
Hello,
I was looking at tpm_emul_passthru.c and I've seen it uses open(2) and
write(2) for initialization and command execution. From before
(https://youtu.be/5wDs1K5ppbQ?t=940) I know you planned on adding tpm
pass-through, which I think was just merged. Anyway, if pass-through
uses open and write, can it be used together with swtpm, maybe? I can
successfully run the following command:
swtpm socket --tpmstate dir=/tmp/mytpm1 --ctrl
type=unixio,path=/tmp/mytpm1/swtpm-sock --tpm2 --log level=20
I can see /tmp/mytpm/swtpm-sock but I don't know how to try to use it
with pass-through.
Regards,
meka
