On 12/30/2022 1:54 PM, Herbert Xu wrote:
> On Fri, Dec 23, 2022 at 05:45:24PM +0530, Rijo Thomas wrote:
>>
>>> dma_alloc_coherent memory is just as contiguous as __get_free_pages, and
>>> calling dma_alloc_coherent from a guest does not guarantee that the memory
>>> is
>>> contiguous in host me
On Fri, Dec 23, 2022 at 05:45:24PM +0530, Rijo Thomas wrote:
>
> > dma_alloc_coherent memory is just as contiguous as __get_free_pages, and
> > calling dma_alloc_coherent from a guest does not guarantee that the memory
> > is
> > contiguous in host memory either. The memory would look contiguous f
On 12/15/2022 6:59 PM, Jeremi Piotrowski wrote:
> On Tue, Dec 13, 2022 at 04:40:27PM +0530, Rijo Thomas wrote:
>> For AMD Secure Processor (ASP) to map and access TEE ring buffer, the
>> ring buffer address sent by host to ASP must be a real physical
>> address and the pages must be physically c
On Fri, Dec 16, 2022 at 3:20 AM Jeremi Piotrowski
wrote:
>
> On Tue, Dec 13, 2022 at 04:40:27PM +0530, Rijo Thomas wrote:
> > For AMD Secure Processor (ASP) to map and access TEE ring buffer, the
> > ring buffer address sent by host to ASP must be a real physical
> > address and the pages must be
On Tue, Dec 13, 2022 at 04:40:27PM +0530, Rijo Thomas wrote:
> For AMD Secure Processor (ASP) to map and access TEE ring buffer, the
> ring buffer address sent by host to ASP must be a real physical
> address and the pages must be physically contiguous.
>
> In a virtualized environment though, whe
For AMD Secure Processor (ASP) to map and access TEE ring buffer, the
ring buffer address sent by host to ASP must be a real physical
address and the pages must be physically contiguous.
In a virtualized environment though, when the driver is running in a
guest VM, the pages allocated by __get_fre
