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Re: [Qemu-devel] [PATCH V11 5/5] Add a TPM Passthrough backend driver im
From: |
Michael S. Tsirkin |
Subject: |
Re: [Qemu-devel] [PATCH V11 5/5] Add a TPM Passthrough backend driver implementation |
Date: |
Sun, 2 Oct 2011 13:30:09 +0200 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
On Wed, Sep 28, 2011 at 09:23:00AM -0400, Stefan Berger wrote:
...
> Some notes about the host TPM:
> The TPM needs to be enabled and activated. If that's not the case one
> has to go through the BIOS/UEFI and enable and activate that TPM for TPM
> commands to work as expected.
> It may be necessary to boot the kernel using tpm_tis.force=1 in the boot
> command line or 'modprobe tpm_tis force=1' in case of using it as a module.
...
> Index: qemu-git.pt/configure
> ===================================================================
> --- qemu-git.pt.orig/configure
> +++ qemu-git.pt/configure
> @@ -3565,6 +3565,9 @@ fi
>
> if test "$tpm" = "yes"; then
> if test "$target_softmmu" = "yes" ; then
> + if test "$linux" = "yes" ; then
> + echo "CONFIG_TPM_PASSTHROUGH=y" >> $config_target_mak
> + fi
I think we might want to make this a configure option
separate from tpm. The number of ways this can fail
might make some vendors want to disable this mode.
> echo "CONFIG_TPM=y" >> $config_host_mak
> fi
> fi
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Michael S. Tsirkin <=