RadeonSI Lands Shared Virtual Memory "SVM" Support For Mesa 25.2
Adding to the many graphics driver features to look forward to with next quarter's Mesa 25.2 release is now Shared Virtual Memory (SVM) support for the RadeonSI Gallium3D driver.
Shared Virtual Memory allows for sharing of pointers and pointer-containing data structures easily between host and device code with it being an important feature of OpenCL 2.0+. SVM also provides memory model consistency guarantees for greater coherency.
Back in May the Mesa Rust-based Rusticl OpenCL driver merged support for SVM and since then Red Hat engineer Karol Herbst took to working on SVM support for the Intel Iris Gallium3D and AMD RadeonSI Gallium3D drivers for supporting this functionality. Two weeks ago Intel Iris merged its SVM support and now RadeonSI support also squeezed in for the Mesa 25.2 release too.
This merge gets that OpenCL 2.0 coarse-grained buffer SVM working on RadeonSI and exposing cl_ext_buffer_device_address.
Shared Virtual Memory allows for sharing of pointers and pointer-containing data structures easily between host and device code with it being an important feature of OpenCL 2.0+. SVM also provides memory model consistency guarantees for greater coherency.
Back in May the Mesa Rust-based Rusticl OpenCL driver merged support for SVM and since then Red Hat engineer Karol Herbst took to working on SVM support for the Intel Iris Gallium3D and AMD RadeonSI Gallium3D drivers for supporting this functionality. Two weeks ago Intel Iris merged its SVM support and now RadeonSI support also squeezed in for the Mesa 25.2 release too.
This merge gets that OpenCL 2.0 coarse-grained buffer SVM working on RadeonSI and exposing cl_ext_buffer_device_address.