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    SubjectRe: [PATCH v3 4/5] efi: call get_event_log before ExitBootServices
    On Tue, Oct 17, 2017 at 10:00:15AM +0200, Thiebaud Weksteen wrote:
    > This patch was mainly developed and tested on Kabylake with PTT as well.
    >
    > It could be a few things. Are you booting with the EFI stub? Is the
    > TPM enabled within the BIOS? Does tpm_tis get loaded? Does it produce
    > any log?

    Nope, and it should not get loaded anyway as I'm using PTT. With PTT you
    use tpm_crb. TPM is working just fine.

    > If the logs are recovered (but not parsed), you should already see an
    > entry in the logs like:
    >
    > efi: SMBIOS=0x7fed6000 ACPI=0x7ff00000 TPMEventLog=0x.....
    >
    > Can you see the TPMEventLog part?

    I can check this when I'm back in Finland. Still in Prague. Tried to
    test this with my work laptop (XPS13 with dTPM) now but the USB stick I
    have with seems to be broken :-(

    This is anyway almost guaranteed to go to 4.16 and I don't want to push
    this to 4.15 so there is no rush right now (already sent my PR).

    > The issue with extra logging is that the log recovery happens within
    > the EFI stub phase where limited logging is available (which I think
    > has been limited to error and fatal message only).
    > For now, it cannot be a version mismatch as the stub will only request
    > the version 1.2 format.

    Right, I see.

    /Jarkko

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