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    SubjectRe: [PATCH V3 1/3] drivers/char/tpm: Add new device driver to support IBM vTPM
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    On Wed, 2012-09-05 at 10:46 -0500, Kent Yoder wrote:
    > On Wed, Sep 05, 2012 at 01:40:07PM +1000, Benjamin Herrenschmidt wrote:
    > > On Wed, 2012-08-22 at 16:42 -0500, Kent Yoder wrote:
    > > > On Wed, Aug 22, 2012 at 04:17:43PM -0500, Ashley Lai wrote:
    > > > > This patch adds a new device driver to support IBM virtual TPM
    > > > > (vTPM) for PPC64. IBM vTPM is supported through the adjunct
    > > > > partition with firmware release 740 or higher. With vTPM
    > > > > support, each lpar is able to have its own vTPM without the
    > > > > physical TPM hardware.
    > > > >
    > > > > This driver provides TPM functionalities by communicating with
    > > > > the vTPM adjunct partition through Hypervisor calls (Hcalls)
    > > > > and Command/Response Queue (CRQ) commands.
    > > >
    > > > Thanks Ashley, I'll include this in my next pull request to James.
    > >
    > > Oh ? I was about to put it in the powerpc tree ... But yeah, I notice
    > > there's a change to tpm.h so it probably should be at least acked by the
    > > TPM folks. As for the subsequent patches, they are powerpc specific so I
    > > can add them, I don't think there's a strict dependency, is there ?
    >
    > James did accept my pull request, so these are already in
    > security-next...

    For the driver itself, it's not a big issue (though I did found issue
    while reviewing it so it will need another round of updates). For the
    code that changes arch/powerpc, especially prom_init.c, that stuff must
    at the very least be acked by me (or the acting powerpc person if I'm
    away) if it's going to go via a different tree.

    Cheers,
    Ben.



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