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Re: [PATCH v3 1/3] tpm: vtpm_proxy: Implement new ioctl to get supported flags

From Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Newsgroups linux.kernel
Subject Re: [PATCH v3 1/3] tpm: vtpm_proxy: Implement new ioctl to get supported flags
Date 2017-05-04 17:40 +0200
Message-ID <tDr1f-5lB-11@gated-at.bofh.it> (permalink)
References <tDqox-4PF-3@gated-at.bofh.it> <tDqoy-4PF-5@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Thu, May 04, 2017 at 10:56:25AM -0400, Stefan Berger wrote:
> Implement VTPM_PROXY_IOC_GET_SUPT_FLAGS ioctl to get the bitmask
> of flags that the vtpm_proxy driver supports in the
> VTPM_PROXY_IOC_NEW_DEV ioctl. This helps user space in deciding
> which flags to set in that ioctl.

you might be better off just having a VTPM_PROXY_IO_ENABLE_FEATURE
.feature = LOCALITY

If that fails then the feature is not supported, no real need for the
query in that case.

Not sure about Jarkko's point on request/release locality.. Is there a
scenario where the emulator should fail the request locality?

Jason

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Thread

[PATCH v3 1/3] tpm: vtpm_proxy: Implement new ioctl to get supported flags Stefan Berger <stefanb@linux.vnet.ibm.com> - 2017-05-04 17:00 +0200
  Re: [PATCH v3 1/3] tpm: vtpm_proxy: Implement new ioctl to get  supported flags Jason Gunthorpe <jgunthorpe@obsidianresearch.com> - 2017-05-04 17:40 +0200
    Re: [PATCH v3 1/3] tpm: vtpm_proxy: Implement new ioctl to get  supported flags Stefan Berger <stefanb@linux.vnet.ibm.com> - 2017-05-04 19:20 +0200
      Re: [PATCH v3 1/3] tpm: vtpm_proxy: Implement new ioctl to get  supported flags Stefan Berger <stefanb@linux.vnet.ibm.com> - 2017-05-04 19:30 +0200
        Re: [PATCH v3 1/3] tpm: vtpm_proxy: Implement new ioctl to get  supported flags Stefan Berger <stefanb@linux.vnet.ibm.com> - 2017-05-04 19:40 +0200
        Re: [PATCH v3 1/3] tpm: vtpm_proxy: Implement new ioctl to get  supported flags Jason Gunthorpe <jgunthorpe@obsidianresearch.com> - 2017-05-04 19:40 +0200
      Re: [PATCH v3 1/3] tpm: vtpm_proxy: Implement new ioctl to get  supported flags Jason Gunthorpe <jgunthorpe@obsidianresearch.com> - 2017-05-04 19:30 +0200

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