Re: [PATCH 2/2] tpm_crb: mark memory as protected

[Laurent Vivier]

On 6/22/23 15:12, Peter Maydell wrote:
> On Tue, 20 Jun 2023 at 20:51, Laurent Vivier <lvivier@redhat.com> wrote:
> > This memory is not correctly aligned and cannot be registered
> > by vDPA and VFIO.
>
> Isn't this a vDPA/VFIO problem? There's no requirement
> for RAM MemoryRegions to be aligned in any way. Code
> that doesn't want to work with small or weirdly aligned
> regions should skip them if that's the right behaviour
> for that particular code IMHO.

Marc-André proposed to modify vDPA code to skip the region but Michal disagreed:

https://lists.nongnu.org/archive/html/qemu-devel/2022-11/msg03670.html

No one wants the modification, so the problem cannot be fixed.

Thanks,
Laurent