Hi David, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on v5.13-rc7] [cannot apply to kvm/queue drm-intel/for-linux-next kvm-ppc/kvm-ppc-next next-20210623] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/David-Stevens/KVM-Remove-uses-of... base: 13311e74253fe64329390df80bed3f07314ddd61 config: x86_64-randconfig-r025-20210622 (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://github.com/0day-ci/linux/commit/834ba0a17bd373a384ac2361165f6a274... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review David-Stevens/KVM-Remove-uses-of-struct-page-from-x86-and-arm64-MMU/20210624-120152 git checkout 834ba0a17bd373a384ac2361165f6a27499a61df # save the attached .config to linux build tree make W=1 ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): In file included from drivers/gpu/drm/i915/gvt/gvt.h:734, from drivers/gpu/drm/i915/intel_gvt.c:27: drivers/gpu/drm/i915/gvt/mpt.h: In function 'intel_gvt_hypervisor_gfn_to_mfn_page': 227 | return intel_gvt_host.mpt->gfn_to_mfn_page(vgpu->handle, gfn); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -- In file included from drivers/gpu/drm/i915/gvt/gvt.h:734, from drivers/gpu/drm/i915/gvt/gtt.c:37: drivers/gpu/drm/i915/gvt/mpt.h: In function 'intel_gvt_hypervisor_gfn_to_mfn_page': 227 | return intel_gvt_host.mpt->gfn_to_mfn_page(vgpu->handle, gfn); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/i915/gvt/gtt.c: In function 'is_2MB_gtt_possible': 1169 | page = intel_gvt_hypervisor_gfn_to_mfn_page(vgpu, ops->get_pfn(entry)); | ^ vim +227 drivers/gpu/drm/i915/gvt/mpt.h 215 216 /** 217 * intel_gvt_hypervisor_gfn_to_mfn_page - translate a GFN to MFN page 218 * @vgpu: a vGPU 219 * @gpfn: guest pfn 220 * 221 * Returns: 222 * struct page* on success, NULL if failed. 223 */ 224 static inline unsigned long intel_gvt_hypervisor_gfn_to_mfn_page( 225 struct intel_vgpu *vgpu, unsigned long gfn) 226 { 228 } 229 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org