Re: [PATCH v3 0/2] tpm: CRB: Use ram_device for "tpm-crb-cmd" region

[Alex Williamson <alex.williamson@redhat.com>]

On Thu, 20 Jan 2022 01:12:40 +0100
Philippe Mathieu-Daudé <f4bug@amsat.org> wrote:

> This is a respin of Eric's work, but not making tpm_crb.c target
> specific.
> 
> Based-on: <20220120000836.229419-1-f4bug@amsat.org>
> "exec/cpu: Make host pages variables / macros 'target agnostic'"
> https://lore.kernel.org/qemu-devel/20220120000836.229419-1-f4bug@amsat.org/
> 
> --
> 
> Eric's v2 cover:
> 
> 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.
> 
> 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/tpm_crb.c     | 22 ++++++++++++++++++++--
>  hw/vfio/common.c     | 15 ++++++++++++++-
>  hw/vfio/trace-events |  1 +
>  3 files changed, 35 insertions(+), 3 deletions(-)
> 

Unfortunately, FTB:

../hw/tpm/tpm_crb.c: In function ‘tpm_crb_realize’:
../hw/tpm/tpm_crb.c:297:33: warning: implicit declaration of function ‘HOST_PAGE_ALIGN’ [-Wimplicit-function-declaration]
  297 |                                 HOST_PAGE_ALIGN(CRB_CTRL_CMD_SIZE));
      |                                 ^~~~~~~~~~~~~~~
../hw/tpm/tpm_crb.c:297:33: warning: nested extern declaration of ‘HOST_PAGE_ALIGN’ [-Wnested-externs]

This is a regression since Eric's v2.  Thanks,

Alex