Re: Windows on ARM64 not able to use attached TPM 2

[Ard Biesheuvel]

On Mon, 2 Aug 2021 at 11:51, Eric Auger <eric.auger@redhat.com> wrote:
>
> and also adding Ard if he is aware of any limitation the TPM2
> integration may suffer for Windows support. On my end I am only able to
> test on Linux atm.
>

I never tested Windows with the TPM2 support, so I cannot answer this,
unfortunately.

>
> On 8/2/21 11:04 AM, Philippe Mathieu-Daudé wrote:
> > Cc'ing Marc-André who is your EDK2 co-maintainer.
> >
> > On 8/1/21 2:28 AM, Stefan Berger wrote:
> >> Hello!
> >>
> >>  I maintain the TPM support in QEMU and the TPM emulator (swtpm). I have
> >> a report from a user who would like to use QEMU on ARM64 (aarch64) with
> >> EDK2 and use an attached TPM 2 but it doesn't seem to work for him. We
> >> know that Windows on x86_64 works with EDK2 and can use an attached TPM
> >> 2 (using swtpm). I don't have an aarch64 host myself nor a Microsoft
> >> account to be able to access the Windows ARM64 version, so maybe someone
> >> here has the necessary background, credentials, and hardware to run QEMU
> >> on using kvm to investigate what the problems may be due to on that
> >> platform.
> >>
> >> https://github.com/stefanberger/swtpm/issues/493
> >>
> >> On Linux it seems to access the TPM emulator with the normal tpm_tis
> >> driver.
> >>
> >> Regards,
> >>
> >>    Stefan
> >>
> >>
> >>
>