diff --git a/CMakeLists_files.cmake b/CMakeLists_files.cmake
index 80a4682e24..057f01fc6f 100644
--- a/CMakeLists_files.cmake
+++ b/CMakeLists_files.cmake
@@ -396,7 +396,6 @@ if(CUDA_FOUND OR hip_FOUND)
   ADD_CUDA_OR_HIP_FILE(PUBLIC_HEADER_FILES opm/simulators/linalg AmgxInterface.hpp)
   ADD_CUDA_OR_HIP_FILE(PUBLIC_HEADER_FILES opm/simulators/linalg HypreInterface.hpp)
   ADD_CUDA_OR_HIP_FILE(PUBLIC_HEADER_FILES opm/simulators/linalg hypreinterface/HypreCpuTransfers.hpp)
-  ADD_CUDA_OR_HIP_FILE(PUBLIC_HEADER_FILES opm/simulators/linalg hypreinterface/HypreDataStructures.hpp)
   ADD_CUDA_OR_HIP_FILE(PUBLIC_HEADER_FILES opm/simulators/linalg hypreinterface/HypreErrorHandling.hpp)
   ADD_CUDA_OR_HIP_FILE(PUBLIC_HEADER_FILES opm/simulators/linalg hypreinterface/HypreGpuTransfers.hpp)
   ADD_CUDA_OR_HIP_FILE(PUBLIC_HEADER_FILES opm/simulators/linalg hypreinterface/HypreSetup.hpp)
@@ -1421,6 +1420,7 @@ endif()
 if(HYPRE_FOUND)
   list(APPEND PUBLIC_HEADER_FILES
     opm/simulators/linalg/HyprePreconditioner.hpp
+    opm/simulators/linalg/hypreinterface/HypreDataStructures.hpp
     opm/simulators/linalg/hypreinterface/HypreUtils.hpp
   )
 endif()
diff --git a/opm/simulators/linalg/gpuistl/HypreInterface.hpp b/opm/simulators/linalg/gpuistl/HypreInterface.hpp
index f1d7dd81fa..15a646a8ee 100644
--- a/opm/simulators/linalg/gpuistl/HypreInterface.hpp
+++ b/opm/simulators/linalg/gpuistl/HypreInterface.hpp
@@ -21,7 +21,7 @@
 #define OPM_HYPRE_INTERFACE_HPP
 
 #include <opm/simulators/linalg/gpuistl/hypreinterface/HypreCpuTransfers.hpp>
-#include <opm/simulators/linalg/gpuistl/hypreinterface/HypreDataStructures.hpp>
+#include <opm/simulators/linalg/hypreinterface/HypreDataStructures.hpp>
 #include <opm/simulators/linalg/gpuistl/hypreinterface/HypreErrorHandling.hpp>
 #include <opm/simulators/linalg/gpuistl/hypreinterface/HypreGpuTransfers.hpp>
 #include <opm/simulators/linalg/gpuistl/hypreinterface/HypreSetup.hpp>
@@ -59,10 +59,10 @@ namespace Opm::gpuistl
  */
 namespace HypreInterface
 {
-    using HostArrays = ::Opm::gpuistl::HypreHostDataArrays;
-    using DeviceArrays = ::Opm::gpuistl::HypreDeviceDataArrays;
-    using ParallelInfo = ::Opm::gpuistl::ParallelInfo;
-    using SparsityPattern = ::Opm::gpuistl::SparsityPattern;
+    using HostArrays = ::Opm::linalg::HypreInterface::HypreHostDataArrays;
+    using DeviceArrays = ::Opm::linalg::HypreInterface::HypreDeviceDataArrays;
+    using ParallelInfo = ::Opm::linalg::HypreInterface::ParallelInfo;
+    using SparsityPattern = ::Opm::linalg::HypreInterface::SparsityPattern;
 
     /**
      * @brief Initialize the Hypre library and set memory/execution policy
@@ -110,13 +110,17 @@ namespace HypreInterface
      * @brief Setup parallel information for Hypre (automatically detects serial/parallel)
      */
     template <typename CommType, typename MatrixType>
-    ParallelInfo setupHypreParallelInfo(const CommType& comm, const MatrixType& matrix);
+    linalg::HypreInterface::ParallelInfo
+    setupHypreParallelInfo(const CommType& comm, const MatrixType& matrix);
 
     /**
      * @brief Setup sparsity pattern from matrix (automatically detects CPU/GPU type)
      */
     template <typename MatrixType>
-    SparsityPattern setupSparsityPattern(const MatrixType& matrix, const ParallelInfo& par_info, bool owner_first);
+    linalg::HypreInterface::SparsityPattern
+    setupSparsityPattern(const MatrixType& matrix,
+                         const linalg::HypreInterface::ParallelInfo& par_info,
+                         bool owner_first);
 
     /**
      * @brief Compute row indexes for HYPRE_IJMatrixSetValues2
diff --git a/opm/simulators/linalg/gpuistl/hypreinterface/HypreCpuTransfers.hpp b/opm/simulators/linalg/gpuistl/hypreinterface/HypreCpuTransfers.hpp
index 104affbdce..145069a68e 100644
--- a/opm/simulators/linalg/gpuistl/hypreinterface/HypreCpuTransfers.hpp
+++ b/opm/simulators/linalg/gpuistl/hypreinterface/HypreCpuTransfers.hpp
@@ -20,7 +20,7 @@
 #ifndef OPM_HYPRE_CPU_TRANSFERS_HPP
 #define OPM_HYPRE_CPU_TRANSFERS_HPP
 
-#include <opm/simulators/linalg/gpuistl/hypreinterface/HypreDataStructures.hpp>
+#include <opm/simulators/linalg/hypreinterface/HypreDataStructures.hpp>
 #include <opm/simulators/linalg/gpuistl/hypreinterface/HypreErrorHandling.hpp>
 
 #include <HYPRE.h>
@@ -66,9 +66,9 @@ template <typename VectorType>
 void
 transferCpuVectorToHypre(const VectorType& cpu_vec,
                          HYPRE_IJVector hypre_vec,
-                         HypreHostDataArrays& host_arrays,
-                         [[maybe_unused]] const HypreDeviceDataArrays& device_arrays,
-                         const ParallelInfo& par_info,
+                         linalg::HypreInterface::HypreHostDataArrays& host_arrays,
+                         [[maybe_unused]] const linalg::HypreInterface::HypreDeviceDataArrays& device_arrays,
+                         const linalg::HypreInterface::ParallelInfo& par_info,
                          bool use_gpu_backend)
 {
     const int N = static_cast<int>(host_arrays.indices.size());
@@ -126,9 +126,9 @@ template <typename VectorType>
 void
 transferHypreToCpuVector(HYPRE_IJVector hypre_vec,
                          VectorType& cpu_vec,
-                         HypreHostDataArrays& host_arrays,
-                         [[maybe_unused]] const HypreDeviceDataArrays& device_arrays,
-                         const ParallelInfo& par_info,
+                         linalg::HypreInterface::HypreHostDataArrays& host_arrays,
+                         [[maybe_unused]] const linalg::HypreInterface::HypreDeviceDataArrays& device_arrays,
+                         const linalg::HypreInterface::ParallelInfo& par_info,
                          bool use_gpu_backend)
 {
     const int N = static_cast<int>(host_arrays.indices.size());
@@ -186,9 +186,9 @@ template <typename MatrixType>
 void
 updateMatrixFromCpuMatrix(const MatrixType& cpu_matrix,
                           HYPRE_IJMatrix hypre_matrix,
-                          const SparsityPattern& sparsity_pattern,
-                          const HypreHostDataArrays& host_arrays,
-                          [[maybe_unused]] const HypreDeviceDataArrays& device_arrays,
+                          const linalg::HypreInterface::SparsityPattern& sparsity_pattern,
+                          const linalg::HypreInterface::HypreHostDataArrays& host_arrays,
+                          [[maybe_unused]] const linalg::HypreInterface::HypreDeviceDataArrays& device_arrays,
                           bool use_gpu_backend)
 {
     const auto N = sparsity_pattern.rows.size();
diff --git a/opm/simulators/linalg/gpuistl/hypreinterface/HypreGpuTransfers.hpp b/opm/simulators/linalg/gpuistl/hypreinterface/HypreGpuTransfers.hpp
index 818a707f4e..53fea583fd 100644
--- a/opm/simulators/linalg/gpuistl/hypreinterface/HypreGpuTransfers.hpp
+++ b/opm/simulators/linalg/gpuistl/hypreinterface/HypreGpuTransfers.hpp
@@ -20,7 +20,7 @@
 #ifndef OPM_HYPRE_GPU_TRANSFERS_HPP
 #define OPM_HYPRE_GPU_TRANSFERS_HPP
 
-#include <opm/simulators/linalg/gpuistl/hypreinterface/HypreDataStructures.hpp>
+#include <opm/simulators/linalg/hypreinterface/HypreDataStructures.hpp>
 #include <opm/simulators/linalg/gpuistl/hypreinterface/HypreErrorHandling.hpp>
 
 #if HAVE_CUDA
@@ -57,9 +57,9 @@ template <typename VectorType>
 void
 transferGpuVectorToHypre(const VectorType& gpu_vec,
                          HYPRE_IJVector hypre_vec,
-                         HypreHostDataArrays& host_arrays,
-                         const HypreDeviceDataArrays& device_arrays,
-                         const ParallelInfo& par_info,
+                         linalg::HypreInterface::HypreHostDataArrays& host_arrays,
+                         const linalg::HypreInterface::HypreDeviceDataArrays& device_arrays,
+                         const linalg::HypreInterface::ParallelInfo& par_info,
                          bool use_gpu_backend)
 {
     const int N = static_cast<int>(host_arrays.indices.size());
@@ -114,9 +114,9 @@ template <typename VectorType>
 void
 transferHypreToGpuVector(HYPRE_IJVector hypre_vec,
                          VectorType& gpu_vec,
-                         HypreHostDataArrays& host_arrays,
-                         const HypreDeviceDataArrays& device_arrays,
-                         const ParallelInfo& par_info,
+                         linalg::HypreInterface::HypreHostDataArrays& host_arrays,
+                         const linalg::HypreInterface::HypreDeviceDataArrays& device_arrays,
+                         const linalg::HypreInterface::ParallelInfo& par_info,
                          bool use_gpu_backend)
 {
     const int N = static_cast<int>(host_arrays.indices.size());
@@ -172,9 +172,9 @@ template <typename MatrixType>
 void
 updateMatrixFromGpuSparseMatrix(const MatrixType& gpu_matrix,
                                 HYPRE_IJMatrix hypre_matrix,
-                                const SparsityPattern& sparsity_pattern,
-                                const HypreHostDataArrays& host_arrays,
-                                const HypreDeviceDataArrays& device_arrays,
+                                const linalg::HypreInterface::SparsityPattern& sparsity_pattern,
+                                const linalg::HypreInterface::HypreHostDataArrays& host_arrays,
+                                const linalg::HypreInterface::HypreDeviceDataArrays& device_arrays,
                                 bool use_gpu_backend)
 {
     const auto N = sparsity_pattern.rows.size();
diff --git a/opm/simulators/linalg/gpuistl/hypreinterface/HypreSetup.hpp b/opm/simulators/linalg/gpuistl/hypreinterface/HypreSetup.hpp
index c318fa758d..55818d33b0 100644
--- a/opm/simulators/linalg/gpuistl/hypreinterface/HypreSetup.hpp
+++ b/opm/simulators/linalg/gpuistl/hypreinterface/HypreSetup.hpp
@@ -22,7 +22,7 @@
 
 #include <opm/simulators/linalg/PropertyTree.hpp>
 #include <opm/simulators/linalg/gpuistl/detail/gpu_type_detection.hpp>
-#include <opm/simulators/linalg/gpuistl/hypreinterface/HypreDataStructures.hpp>
+#include <opm/simulators/linalg/hypreinterface/HypreDataStructures.hpp>
 #include <opm/simulators/linalg/gpuistl/hypreinterface/HypreErrorHandling.hpp>
 
 #include <dune/istl/owneroverlapcopy.hh>
@@ -51,24 +51,28 @@ namespace Opm::gpuistl::HypreInterface
 
 // GPU-specific helper functions
 template <typename T, bool ForceLegacy>
-SparsityPattern setupSparsityPatternFromGpuMatrix(const GpuSparseMatrixWrapper<T, ForceLegacy>& gpu_matrix,
-                                                  const ParallelInfo& par_info,
-                                                  bool owner_first);
+linalg::HypreInterface::SparsityPattern
+setupSparsityPatternFromGpuMatrix(const GpuSparseMatrixWrapper<T, ForceLegacy>& gpu_matrix,
+                                  const linalg::HypreInterface::ParallelInfo& par_info,
+                                  bool owner_first);
 
 template <typename T, bool ForceLegacy>
 std::vector<HYPRE_Int> computeRowIndexesWithMappingGpu(const GpuSparseMatrixWrapper<T, ForceLegacy>& gpu_matrix,
                                                        const std::vector<int>& local_dune_to_local_hypre);
 
 // Serial helper functions
-ParallelInfo setupHypreParallelInfoSerial(HYPRE_Int N);
+ linalg::HypreInterface::ParallelInfo setupHypreParallelInfoSerial(HYPRE_Int N);
 
 // Parallel helper functions
 template <typename CommType, typename MatrixType>
-ParallelInfo setupHypreParallelInfoParallel(const CommType& comm, const MatrixType& matrix);
+linalg::HypreInterface::ParallelInfo
+setupHypreParallelInfoParallel(const CommType& comm, const MatrixType& matrix);
 
 template <typename MatrixType>
-SparsityPattern
-setupSparsityPatternFromCpuMatrix(const MatrixType& matrix, const ParallelInfo& par_info, bool owner_first);
+linalg::HypreInterface::SparsityPattern
+setupSparsityPatternFromCpuMatrix(const MatrixType& matrix,
+                                  const linalg::HypreInterface::ParallelInfo& par_info,
+                                  bool owner_first);
 
 template <typename MatrixType>
 std::vector<HYPRE_Int> computeRowIndexesWithMappingCpu(const MatrixType& matrix,
@@ -259,7 +263,7 @@ destroyVector(HYPRE_IJVector vector)
  * @return ParallelInfo structure containing mappings and offsets
  */
 template <typename CommType, typename MatrixType>
-ParallelInfo
+linalg::HypreInterface::ParallelInfo
 setupHypreParallelInfo(const CommType& comm, const MatrixType& matrix)
 {
     if constexpr (std::is_same_v<CommType, Dune::Amg::SequentialInformation>) {
@@ -275,10 +279,10 @@ setupHypreParallelInfo(const CommType& comm, const MatrixType& matrix)
  * @param N Number of rows
  * @return ParallelInfo structure containing mappings and offsets
  */
-inline ParallelInfo
+inline linalg::HypreInterface::ParallelInfo
 setupHypreParallelInfoSerial(HYPRE_Int N)
 {
-    ParallelInfo info;
+    linalg::HypreInterface::ParallelInfo info;
     info.N_owned = N;
 
     info.local_dune_to_local_hypre.resize(N);
@@ -359,10 +363,10 @@ setupHypreParallelInfoSerial(HYPRE_Int N)
  * @note May modify comm if index set holes are detected (rare in OPM)
  */
 template <typename CommType, typename MatrixType>
-inline ParallelInfo
+linalg::HypreInterface::ParallelInfo
 setupHypreParallelInfoParallel(const CommType& comm, const MatrixType& matrix)
 {
-    ParallelInfo info;
+    linalg::HypreInterface::ParallelInfo info;
     const auto& collective_comm = comm.communicator();
 
     // Initialize mapping arrays to not owned (-1) state
@@ -463,8 +467,10 @@ setupHypreParallelInfoParallel(const CommType& comm, const MatrixType& matrix)
  * @return Sparsity pattern information
  */
 template <typename MatrixType>
-SparsityPattern
-setupSparsityPattern(const MatrixType& matrix, const ParallelInfo& par_info, bool owner_first)
+ linalg::HypreInterface::SparsityPattern
+setupSparsityPattern(const MatrixType& matrix,
+                     const linalg::HypreInterface::ParallelInfo& par_info,
+                     bool owner_first)
 {
 #if HYPRE_USING_CUDA || HYPRE_USING_HIP
     if constexpr (is_gpu_type<MatrixType>::value) {
@@ -485,10 +491,12 @@ setupSparsityPattern(const MatrixType& matrix, const ParallelInfo& par_info, boo
  * @return Sparsity pattern information
  */
 template <typename MatrixType>
-SparsityPattern
-setupSparsityPatternFromCpuMatrix(const MatrixType& matrix, const ParallelInfo& par_info, bool owner_first)
+linalg::HypreInterface::SparsityPattern
+setupSparsityPatternFromCpuMatrix(const MatrixType& matrix,
+                                  const linalg::HypreInterface::ParallelInfo& par_info,
+                                  bool owner_first)
 {
-    SparsityPattern pattern;
+    linalg::HypreInterface::SparsityPattern pattern;
 
     // Determine the size for cols array based on owner_first
     if (owner_first) {
@@ -550,12 +558,12 @@ setupSparsityPatternFromCpuMatrix(const MatrixType& matrix, const ParallelInfo&
  * @return Sparsity pattern information
  */
 template <typename T, bool ForceLegacy>
-SparsityPattern
+linalg::HypreInterface::SparsityPattern
 setupSparsityPatternFromGpuMatrix(const GpuSparseMatrixWrapper<T, ForceLegacy>& gpu_matrix,
-                                  const ParallelInfo& par_info,
+                                  const linalg::HypreInterface::ParallelInfo& par_info,
                                   bool owner_first)
 {
-    SparsityPattern pattern;
+    linalg::HypreInterface::SparsityPattern pattern;
 
     // Determine the size for cols array based on owner_first
     if (owner_first) {
diff --git a/opm/simulators/linalg/gpuistl/hypreinterface/HypreDataStructures.hpp b/opm/simulators/linalg/hypreinterface/HypreDataStructures.hpp
similarity index 98%
rename from opm/simulators/linalg/gpuistl/hypreinterface/HypreDataStructures.hpp
rename to opm/simulators/linalg/hypreinterface/HypreDataStructures.hpp
index 969325c5ef..9074b07d3b 100644
--- a/opm/simulators/linalg/gpuistl/hypreinterface/HypreDataStructures.hpp
+++ b/opm/simulators/linalg/hypreinterface/HypreDataStructures.hpp
@@ -25,7 +25,7 @@
 #include <_hypre_utilities.h>
 #include <vector>
 
-namespace Opm::gpuistl
+namespace Opm::linalg::HypreInterface
 {
 
 /**
@@ -154,6 +154,7 @@ struct HypreDeviceDataArrays {
      */
     HYPRE_Real* matrix_buffer_device = nullptr;
 };
-} // namespace Opm::gpuistl
+
+} // namespace Opm::linalg::HypreInterface
 
 #endif // OPM_HYPRE_DATA_STRUCTURES_HPP