Re: [PATCH v2 0/2] TPM-CRB: Remove spurious error report when used with VFIO

[Stefan Berger <stefanb@linux.ibm.com>]

On 1/18/22 10:33, Eric Auger wrote:
> This series aims at removing a spurious error message we get when
> launching a guest with a TPM-CRB device and VFIO-PCI devices.
>
> The CRB command buffer currently is a RAM MemoryRegion and given
> its base address alignment, it causes an error report on
> vfio_listener_region_add(). This series proposes to use a ram-device
> region instead which helps in better assessing the dma map error
> failure on VFIO side.
>
> Best Regards
>
> Eric
>
> This series can be found at:
> https://github.com/eauger/qemu/tree/tpm-crb-ram-device-v2
>
> History:
> v1 -> v2:
> - added tpm_crb_unrealize (dared to keep Stefan's T-b though)
>
> Eric Auger (2):
>    tpm: CRB: Use ram_device for "tpm-crb-cmd" region
>    hw/vfio/common: Silence ram device offset alignment error traces
>
>   hw/tpm/meson.build   |  2 +-
>   hw/tpm/tpm_crb.c     | 22 ++++++++++++++++++++--
>   hw/vfio/common.c     | 15 ++++++++++++++-
>   hw/vfio/trace-events |  1 +
>   4 files changed, 36 insertions(+), 4 deletions(-)
>
Acked-by: Stefan Berger <stefanb@linux.ibm.com>