Re: [RFC PATCH 02/16] accel/tcg: memory access from CPU will pass access_type to IOMMU

[Ethan Chen]

On Wed, Jun 12, 2024 at 04:14:02PM +0800, Jim Shu wrote:
> [EXTERNAL MAIL]
> 
> It is the preparation patch for upcoming RISC-V wgChecker device.
> 
> Since RISC-V wgChecker could permit access in RO/WO permission, the
> IOMMUMemoryRegion could return different section for read & write
> access. The memory access from CPU should also pass the access_type to
> IOMMU translate function so that IOMMU could return the correct section
> of specified access_type.
> 

Hi Jim,

Does this method take into account the situation where the CPU access type is
different from the access type when creating iotlb? I think the section
might be wrong in this situation.

Thanks,
Ethan
> 
>