[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Qemu-devel] [PATCH V13 6/7] Introduce --enable-tpm-passthrough conf

From: Anthony Liguori
Subject: Re: [Qemu-devel] [PATCH V13 6/7] Introduce --enable-tpm-passthrough configure option
Date: Tue, 13 Dec 2011 11:41:56 -0600
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv: Gecko/20110831 Lightning/1.0b2 Thunderbird/3.1.13

On 12/13/2011 07:51 AM, Michael S. Tsirkin wrote:
On Tue, Dec 13, 2011 at 07:51:17AM -0500, Stefan Berger wrote:
On 12/12/2011 11:51 PM, Paul Brook wrote:
Same as before, please probe for existence.
We would be probing for /dev/tpm0. Is that really what we want that this
driver only gets compiled if /dev/tpm0 is (currently) available?
If what you say is true then this code should always be enabled.

Michael Tsirkin previously requested that there be an option for the
TPM passthrough driver to be selectively enabled since at least
using /dev/tpm0 may not be what everybody wants. The passthrough
driver at some point will also be able to use sockets to communicate
with a TPM when a file descriptor is passed to Qemu, so maybe that
changes then?


The passthrough as it is, is pretty easy to misuse.
This is a hardware problem, not software, and
I don't think it's fixable.

Can you elaborate?  And can this be documented such that users are aware of 


Anthony Liguori

So I do not think all downstreams will want to support this
mode, making it easy to disable this is IMO important.

reply via email to

[Prev in Thread] Current Thread [Next in Thread]