diff --git a/ci/build.linux.gitlab-ci.yml b/ci/build.linux.gitlab-ci.yml
index dbfa57914..a8dd49ee1 100644
--- a/ci/build.linux.gitlab-ci.yml
+++ b/ci/build.linux.gitlab-ci.yml
@@ -244,11 +244,13 @@ build:linux:rocm-latest:gcc-10:
     EIGEN_CI_CROSS_TARGET_TRIPLE: arm-linux-gnueabihf
     EIGEN_CI_ADDITIONAL_ARGS: >
       -DEIGEN_TEST_CUSTOM_CXX_FLAGS=-march=armv7-a;-mfpu=neon-vfpv4
+      -DCMAKE_SYSTEM_NAME=Linux
+      -DCMAKE_CROSSCOMPILING_EMULATOR=qemu-arm-static;-L;/usr/arm-linux-gnueabihf
 
 build:linux:cross:arm:gcc-10:default:
   extends: .build:linux:cross:arm
   variables:
-    EIGEN_CI_CROSS_INSTALL: g++-10-arm-linux-gnueabihf
+    EIGEN_CI_CROSS_INSTALL: g++-10-arm-linux-gnueabihf qemu-user-static
     EIGEN_CI_CROSS_C_COMPILER: arm-linux-gnueabihf-gcc-10
     EIGEN_CI_CROSS_CXX_COMPILER: arm-linux-gnueabihf-g++-10
 
@@ -258,7 +260,7 @@ build:linux:cross:arm:clang-12:default:
     EIGEN_CI_INSTALL: clang-12
     EIGEN_CI_C_COMPILER: clang-12
     EIGEN_CI_CXX_COMPILER: clang++-12
-    EIGEN_CI_CROSS_INSTALL: g++-10-arm-linux-gnueabihf clang-12
+    EIGEN_CI_CROSS_INSTALL: g++-10-arm-linux-gnueabihf clang-12 qemu-user-static
 
 ######## aarch64 ###############################################################
 
@@ -295,25 +297,23 @@ build:linux:cross:aarch64:clang-12:default:
   variables:
     EIGEN_CI_TARGET_ARCH: ppc64le
     EIGEN_CI_CROSS_TARGET_TRIPLE: powerpc64le-linux-gnu
+    EIGEN_CI_ADDITIONAL_ARGS: >-
+      -DCMAKE_SYSTEM_NAME=Linux
+      -DCMAKE_CROSSCOMPILING_EMULATOR=qemu-ppc64le-static;-L;/usr/powerpc64le-linux-gnu
 
 build:linux:cross:ppc64le:gcc-10:default:
   extends: .build:linux:cross:ppc64le
   variables:
-    EIGEN_CI_C_COMPILER: gcc-10
-    EIGEN_CI_CXX_COMPILER: g++-10
-    EIGEN_CI_CROSS_INSTALL: g++-10-powerpc64le-linux-gnu
+    EIGEN_CI_CROSS_INSTALL: g++-10-powerpc64le-linux-gnu qemu-user-static
     EIGEN_CI_CROSS_C_COMPILER: powerpc64le-linux-gnu-gcc-10
     EIGEN_CI_CROSS_CXX_COMPILER: powerpc64le-linux-gnu-g++-10
-    # Temporarily disable MMA until #2457 is resolved.
-    EIGEN_CI_ADDITIONAL_ARGS: "-DEIGEN_ALTIVEC_DISABLE_MMA=1"
 
 build:linux:cross:ppc64le:clang-12:default:
   extends: .build:linux:cross:ppc64le
   variables:
-    EIGEN_CI_INSTALL: clang-12
     EIGEN_CI_C_COMPILER: clang-12
     EIGEN_CI_CXX_COMPILER: clang++-12
-    EIGEN_CI_CROSS_INSTALL: g++-10-powerpc64le-linux-gnu clang-12
+    EIGEN_CI_CROSS_INSTALL: g++-10-powerpc64le-linux-gnu clang-12 qemu-user-static
 
 ######## loongarch64 #################################################
 
@@ -328,7 +328,7 @@ build:linux:cross:loongarch64:gcc-14:default:
   extends: .build:linux:cross:loongarch64
   image: ubuntu:24.04
   variables:
-    EIGEN_CI_CROSS_INSTALL: g++-14-loongarch64-linux-gnu
+    EIGEN_CI_CROSS_INSTALL: g++-14-loongarch64-linux-gnu qemu-user-static
     EIGEN_CI_CROSS_C_COMPILER: loongarch64-linux-gnu-gcc-14
     EIGEN_CI_CROSS_CXX_COMPILER: loongarch64-linux-gnu-g++-14
     EIGEN_CI_ADDITIONAL_ARGS: >-
diff --git a/ci/test.linux.gitlab-ci.yml b/ci/test.linux.gitlab-ci.yml
index e0dd978b6..126800d64 100644
--- a/ci/test.linux.gitlab-ci.yml
+++ b/ci/test.linux.gitlab-ci.yml
@@ -9,6 +9,10 @@
     - if: $CI_PIPELINE_SOURCE == "schedule" && $CI_PROJECT_NAMESPACE == "libeigen"
     - if: $CI_PIPELINE_SOURCE == "web" && $CI_PROJECT_NAMESPACE == "libeigen"
     - if: $CI_PIPELINE_SOURCE == "merge_request_event" && $CI_PROJECT_NAMESPACE == "libeigen" && $CI_MERGE_REQUEST_LABELS =~ "/all-tests/"
+  tags:
+    - eigen-runner
+    - linux
+    - x86-64
 
 ##### x86-64 ###################################################################
 .test:linux:x86-64:
@@ -16,10 +20,6 @@
   variables:
     EIGEN_CI_TARGET_ARCH: x86_64
     EIGEN_CI_CROSS_TARGET_TRIPLE: x86_64-linux-gnu
-  tags:
-    - eigen-runner
-    - linux
-    - x86-64
 
 # GCC-6 (minimum on Ubuntu 18.04)
 .test:linux:x86-64:gcc-6:default:
@@ -289,16 +289,13 @@ test:linux:cuda-12.2:clang-12:
   variables:
     EIGEN_CI_TARGET_ARCH: arm
     EIGEN_CI_CROSS_TARGET_TRIPLE: arm-linux-gnueabihf
-    # Enable cross-compiled arm binary to run on aarch64.
-    EIGEN_CI_BEFORE_SCRIPT: "ln -s /usr/arm-linux-gnueabihf/lib/ld-linux-armhf.so.3 /lib/ && export LD_LIBRARY_PATH=/usr/arm-linux-gnueabihf/lib/"
-  tags:
-    - saas-linux-large-arm64
+    EIGEN_CI_CTEST_ARGS: --timeout 2000
 
 .test:linux:arm:gcc-10:default:
   extends: .test:linux:arm
   needs: [ build:linux:cross:arm:gcc-10:default ]
   variables:
-    EIGEN_CI_CROSS_INSTALL: g++-10-arm-linux-gnueabihf
+    EIGEN_CI_CROSS_INSTALL: g++-10-arm-linux-gnueabihf qemu-user-static
 
 test:linux:arm:gcc-10:default:official:
   extends: .test:linux:arm:gcc-10:default
@@ -314,7 +311,7 @@ test:linux:arm:gcc-10:default:unsupported:
   extends: .test:linux:arm
   needs: [ build:linux:cross:arm:clang-12:default ]
   variables:
-    EIGEN_CI_CROSS_INSTALL: g++-10-arm-linux-gnueabihf clang-12
+    EIGEN_CI_CROSS_INSTALL: g++-10-arm-linux-gnueabihf clang-12 qemu-user-static
 
 test:linux:arm:clang-12:default:official:
   extends: .test:linux:arm:clang-12:default
@@ -375,16 +372,13 @@ test:linux:aarch64:clang-12:default:unsupported:
   variables:
     EIGEN_CI_TARGET_ARCH: ppc64le
     EIGEN_CI_CROSS_TARGET_TRIPLE: powerpc64le-linux-gnu
-  tags:
-    - eigen-runner
-    - linux
-    - ppc64le
 
 .test:linux:ppc64le:gcc-10:default:
   extends: .test:linux:ppc64le
   needs: [ build:linux:cross:ppc64le:gcc-10:default ]
   variables:
-    EIGEN_CI_INSTALL: g++-10
+    EIGEN_CI_CROSS_INSTALL: g++-10-powerpc64le-linux-gnu qemu-user-static
+    EIGEN_CI_CTEST_ARGS: --timeout 2000
 
 test:linux:ppc64le:gcc-10:default:official:
   extends: .test:linux:ppc64le:gcc-10:default
@@ -400,7 +394,7 @@ test:linux:ppc64le:gcc-10:default:unsupported:
   extends: .test:linux:ppc64le
   needs: [ build:linux:cross:ppc64le:clang-12:default ]
   variables:
-    EIGEN_CI_INSTALL: clang-12
+    EIGEN_CI_CROSS_INSTALL: g++-10-powerpc64le-linux-gnu clang-12 qemu-user-static
 
 test:linux:ppc64le:clang-12:default:official:
   extends: .test:linux:ppc64le:clang-12:default
@@ -412,20 +406,16 @@ test:linux:ppc64le:clang-12:default:unsupported:
   variables:
     EIGEN_CI_CTEST_LABEL: Unsupported
 
-##### loongarch64 ###################################################################
+##### loongarch64 ##############################################################
+
 .test:linux:loongarch64:
   extends: .test:linux
   image: ubuntu:24.04
   variables:
     EIGEN_CI_TARGET_ARCH: loongarch64
     EIGEN_CI_CROSS_TARGET_TRIPLE: loongarch64-linux-gnu
-    # Install QEMU and set up the execution environment in the image
     EIGEN_CI_CROSS_INSTALL: g++-14-loongarch64-linux-gnu qemu-user-static
     EIGEN_CI_CTEST_ARGS: --timeout 2000
-  tags:
-    - eigen-runner
-    - linux
-    - cross-compiler
 
 # GCC-14 (Ubuntu 24)
 .test:linux:loongarch64:gcc-14:default: