Messages in this thread | | | Date | Mon, 27 Mar 2023 08:30:24 +0200 | From | Greg KH <> | Subject | Re: [PATCH v1 2/3] virt: tdx-guest: Add Quote generation support |
| |
On Sun, Mar 26, 2023 at 12:06:26PM -0700, Sathyanarayanan Kuppuswamy wrote: > If usage of DMA APIs / platform device is not acceptable for this use case,
It is not ok to use a platform device for this because you just do not have a platform device for it, don't make one up out of thin air please, as that really doesn't even have the correct bindings to the DMA memory that you want here.
> an alternative approach is to allocate a fixed number of shared buffers during > the TDX guest driver probe and use it for GetQuote requests. Although it would > limit the amount of memory we can use for GetQuote requests at a time and also > reserve a chunk of memory during the init() time, I think it is an acceptable > tradeoff when compared to alternative choices. The AMD SEV guest driver also > adopts the similar approach. Please let me know if this approach is acceptable.
This sounds like a better approach.
thanks,
greg k-h
| |