On Mon. 9 Dec. 2024 at 13:34, kernel test robot <lkp@xxxxxxxxx> wrote: > tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master > head: ebe1b11614e079c5e366ce9bd3c8f44ca0fbcc1b > commit: 86c4e589d5c8fbb5092de0052b89402e86706515 [2260/2462] build_bug.h: more user friendly error messages in BUILD_BUG_ON_ZERO() > config: s390-randconfig-001-20241208 (https://download.01.org/0day-ci/archive/20241208/202412080849.sPp82jSi-lkp@xxxxxxxxx/config) > compiler: clang version 15.0.7 (https://github.com/llvm/llvm-project 8dfdcc7b7bf66834a761bd8de445840ef68e4d1a) > reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241208/202412080849.sPp82jSi-lkp@xxxxxxxxx/reproduce) > > If you fix the issue in a separate patch/commit (i.e. not just a new version of > the same patch/commit), kindly add following tags > | Reported-by: kernel test robot <lkp@xxxxxxxxx> > | Closes: https://lore.kernel.org/oe-kbuild-all/202412080849.sPp82jSi-lkp@xxxxxxxxx/ > > All errors (new ones prefixed by >>): > > >> drivers/gpu/drm/xe/xe_gt_idle.c:127:33: error: static assertion expression is not an integral constant expression > gtidle->powergate_enable |= (VDN_HCP_POWERGATE_ENABLE(j) | > ^~~~~~~~~~~~~~~~~~~~~~~~~~~ > drivers/gpu/drm/xe/regs/xe_gt_regs.h:342:40: note: expanded from macro 'VDN_HCP_POWERGATE_ENABLE' > #define VDN_HCP_POWERGATE_ENABLE(n) REG_BIT(3 + 2 * (n)) > ^~~~~~~~~~~~~~~~~~~~ > drivers/gpu/drm/xe/compat-i915-headers/../../i915/i915_reg_defs.h:22:9: note: expanded from macro 'REG_BIT' > BUILD_BUG_ON_ZERO(__is_constexpr(__n) && \ > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > include/linux/build_bug.h:16:35: note: expanded from macro 'BUILD_BUG_ON_ZERO' > #define BUILD_BUG_ON_ZERO(e, ...) __BUILD_BUG_ON_ZERO(e, ##__VA_ARGS__, #e) > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > include/linux/build_bug.h:17:37: note: expanded from macro '__BUILD_BUG_ON_ZERO' > #define __BUILD_BUG_ON_ZERO(e, msg) __BUILD_BUG_ON_ZERO_MSG(e, msg " is true") > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > include/linux/compiler.h:245:77: note: expanded from macro '__BUILD_BUG_ON_ZERO_MSG' > #define __BUILD_BUG_ON_ZERO_MSG(e, msg) ((int)sizeof(struct {_Static_assert(!(e), msg);})) > ^~~~ > drivers/gpu/drm/xe/xe_gt_idle.c:128:12: error: static assertion expression is not an integral constant expression > VDN_MFXVDENC_POWERGATE_ENABLE(j)); > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ So, here, j is not an integer constant expression. When passed to REG_BIT(), it will eventually expands to: BUILD_BUG_ON_ZERO(__is_constexpr(j) && (j < 0 || j > 31)) which is a compile time constant but not an integer constant expression. It was constant enough for the previous definition of BUILD_BUG_ON_ZERO() which relied on bitfields, but not enough constant for _Static_assert(). The reason I did not notice that is because I have another series in my tree which solves this issue, precisely, this patch: https://lore.kernel.org/all/20241203-is_constexpr-refactor-v1-8-4e4cbaecc216@xxxxxxxxxx/ @Andrew, maybe you can remove this patch from your tree. I thought it was standalone, but it is not. I will resend once the above series get merged. > drivers/gpu/drm/xe/regs/xe_gt_regs.h:343:44: note: expanded from macro 'VDN_MFXVDENC_POWERGATE_ENABLE' > #define VDN_MFXVDENC_POWERGATE_ENABLE(n) REG_BIT(4 + 2 * (n)) > ^~~~~~~~~~~~~~~~~~~~ > drivers/gpu/drm/xe/compat-i915-headers/../../i915/i915_reg_defs.h:22:9: note: expanded from macro 'REG_BIT' > BUILD_BUG_ON_ZERO(__is_constexpr(__n) && \ > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > include/linux/build_bug.h:16:35: note: expanded from macro 'BUILD_BUG_ON_ZERO' > #define BUILD_BUG_ON_ZERO(e, ...) __BUILD_BUG_ON_ZERO(e, ##__VA_ARGS__, #e) > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > include/linux/build_bug.h:17:37: note: expanded from macro '__BUILD_BUG_ON_ZERO' > #define __BUILD_BUG_ON_ZERO(e, msg) __BUILD_BUG_ON_ZERO_MSG(e, msg " is true") > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > include/linux/compiler.h:245:77: note: expanded from macro '__BUILD_BUG_ON_ZERO_MSG' > #define __BUILD_BUG_ON_ZERO_MSG(e, msg) ((int)sizeof(struct {_Static_assert(!(e), msg);})) > ^~~~ > 2 errors generated. > -- > >> drivers/gpu/drm/xe/xe_reg_whitelist.c:139:22: error: static assertion expression is not an integral constant expression > range_start = reg & REG_GENMASK(25, range_bit); > ^~~~~~~~~~~~~~~~~~~~~~~~~~ > drivers/gpu/drm/xe/compat-i915-headers/../../i915/i915_reg_defs.h:49:9: note: expanded from macro 'REG_GENMASK' > BUILD_BUG_ON_ZERO(__is_constexpr(__high) && \ > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > include/linux/build_bug.h:16:35: note: expanded from macro 'BUILD_BUG_ON_ZERO' > #define BUILD_BUG_ON_ZERO(e, ...) __BUILD_BUG_ON_ZERO(e, ##__VA_ARGS__, #e) > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > include/linux/build_bug.h:17:37: note: expanded from macro '__BUILD_BUG_ON_ZERO' > #define __BUILD_BUG_ON_ZERO(e, msg) __BUILD_BUG_ON_ZERO_MSG(e, msg " is true") > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > include/linux/compiler.h:245:77: note: expanded from macro '__BUILD_BUG_ON_ZERO_MSG' > #define __BUILD_BUG_ON_ZERO_MSG(e, msg) ((int)sizeof(struct {_Static_assert(!(e), msg);})) > ^~~~ > drivers/gpu/drm/xe/xe_reg_whitelist.c:140:28: error: static assertion expression is not an integral constant expression > range_end = range_start | REG_GENMASK(range_bit, 0); > ^~~~~~~~~~~~~~~~~~~~~~~~~ > drivers/gpu/drm/xe/compat-i915-headers/../../i915/i915_reg_defs.h:49:9: note: expanded from macro 'REG_GENMASK' > BUILD_BUG_ON_ZERO(__is_constexpr(__high) && \ > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > include/linux/build_bug.h:16:35: note: expanded from macro 'BUILD_BUG_ON_ZERO' > #define BUILD_BUG_ON_ZERO(e, ...) __BUILD_BUG_ON_ZERO(e, ##__VA_ARGS__, #e) > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > include/linux/build_bug.h:17:37: note: expanded from macro '__BUILD_BUG_ON_ZERO' > #define __BUILD_BUG_ON_ZERO(e, msg) __BUILD_BUG_ON_ZERO_MSG(e, msg " is true") > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > include/linux/compiler.h:245:77: note: expanded from macro '__BUILD_BUG_ON_ZERO_MSG' > #define __BUILD_BUG_ON_ZERO_MSG(e, msg) ((int)sizeof(struct {_Static_assert(!(e), msg);})) > ^~~~ > 2 errors generated. > -- > >> drivers/gpu/drm/xe/xe_irq.c:303:22: error: static assertion expression is not an integral constant expression > if (!(master_ctl & GT_DW_IRQ(bank))) > ^~~~~~~~~~~~~~~ > drivers/gpu/drm/xe/regs/xe_irq_regs.h:22:27: note: expanded from macro 'GT_DW_IRQ' > #define GT_DW_IRQ(x) REG_BIT(x) > ^~~~~~~~~~ > drivers/gpu/drm/xe/compat-i915-headers/../../i915/i915_reg_defs.h:22:9: note: expanded from macro 'REG_BIT' > BUILD_BUG_ON_ZERO(__is_constexpr(__n) && \ > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > include/linux/build_bug.h:16:35: note: expanded from macro 'BUILD_BUG_ON_ZERO' > #define BUILD_BUG_ON_ZERO(e, ...) __BUILD_BUG_ON_ZERO(e, ##__VA_ARGS__, #e) > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > include/linux/build_bug.h:17:37: note: expanded from macro '__BUILD_BUG_ON_ZERO' > #define __BUILD_BUG_ON_ZERO(e, msg) __BUILD_BUG_ON_ZERO_MSG(e, msg " is true") > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > include/linux/compiler.h:245:77: note: expanded from macro '__BUILD_BUG_ON_ZERO_MSG' > #define __BUILD_BUG_ON_ZERO_MSG(e, msg) ((int)sizeof(struct {_Static_assert(!(e), msg);})) > ^~~~ > drivers/gpu/drm/xe/xe_irq.c:436:26: error: static assertion expression is not an integral constant expression > if ((master_tile_ctl & DG1_MSTR_TILE(tile->id)) == 0) > ^~~~~~~~~~~~~~~~~~~~~~~ > drivers/gpu/drm/xe/regs/xe_irq_regs.h:16:30: note: expanded from macro 'DG1_MSTR_TILE' > #define DG1_MSTR_TILE(t) REG_BIT(t) > ^~~~~~~~~~ > drivers/gpu/drm/xe/compat-i915-headers/../../i915/i915_reg_defs.h:22:9: note: expanded from macro 'REG_BIT' > BUILD_BUG_ON_ZERO(__is_constexpr(__n) && \ > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > include/linux/build_bug.h:16:35: note: expanded from macro 'BUILD_BUG_ON_ZERO' > #define BUILD_BUG_ON_ZERO(e, ...) __BUILD_BUG_ON_ZERO(e, ##__VA_ARGS__, #e) > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > include/linux/build_bug.h:17:37: note: expanded from macro '__BUILD_BUG_ON_ZERO' > #define __BUILD_BUG_ON_ZERO(e, msg) __BUILD_BUG_ON_ZERO_MSG(e, msg " is true") > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > include/linux/compiler.h:245:77: note: expanded from macro '__BUILD_BUG_ON_ZERO_MSG' > #define __BUILD_BUG_ON_ZERO_MSG(e, msg) ((int)sizeof(struct {_Static_assert(!(e), msg);})) > ^~~~ > 2 errors generated. > > > vim +127 drivers/gpu/drm/xe/xe_gt_idle.c > > 1c2097bbde107e drivers/gpu/drm/xe/xe_gt_idle_sysfs.c Riana Tauro 2023-06-23 97 > 38e8c4184ea0ee drivers/gpu/drm/xe/xe_gt_idle.c Riana Tauro 2024-05-24 98 void xe_gt_idle_enable_pg(struct xe_gt *gt) > 38e8c4184ea0ee drivers/gpu/drm/xe/xe_gt_idle.c Riana Tauro 2024-05-24 99 { > 38e8c4184ea0ee drivers/gpu/drm/xe/xe_gt_idle.c Riana Tauro 2024-05-24 100 struct xe_device *xe = gt_to_xe(gt); > c2bf07dd0bbce1 drivers/gpu/drm/xe/xe_gt_idle.c Riana Tauro 2024-09-06 101 struct xe_gt_idle *gtidle = >->gtidle; > 50089a9534e258 drivers/gpu/drm/xe/xe_gt_idle.c Matt Roper 2024-09-10 102 struct xe_mmio *mmio = >->mmio; > c2bf07dd0bbce1 drivers/gpu/drm/xe/xe_gt_idle.c Riana Tauro 2024-09-06 103 u32 vcs_mask, vecs_mask; > a66c19895396e6 drivers/gpu/drm/xe/xe_gt_idle.c Himal Prasad Ghimiray 2024-10-14 104 unsigned int fw_ref; > 38e8c4184ea0ee drivers/gpu/drm/xe/xe_gt_idle.c Riana Tauro 2024-05-24 105 int i, j; > 38e8c4184ea0ee drivers/gpu/drm/xe/xe_gt_idle.c Riana Tauro 2024-05-24 106 > ecab82af278733 drivers/gpu/drm/xe/xe_gt_idle.c Michal Wajdeczko 2024-06-19 107 if (IS_SRIOV_VF(xe)) > ecab82af278733 drivers/gpu/drm/xe/xe_gt_idle.c Michal Wajdeczko 2024-06-19 108 return; > ecab82af278733 drivers/gpu/drm/xe/xe_gt_idle.c Michal Wajdeczko 2024-06-19 109 > 38e8c4184ea0ee drivers/gpu/drm/xe/xe_gt_idle.c Riana Tauro 2024-05-24 110 /* Disable CPG for PVC */ > 38e8c4184ea0ee drivers/gpu/drm/xe/xe_gt_idle.c Riana Tauro 2024-05-24 111 if (xe->info.platform == XE_PVC) > 38e8c4184ea0ee drivers/gpu/drm/xe/xe_gt_idle.c Riana Tauro 2024-05-24 112 return; > 38e8c4184ea0ee drivers/gpu/drm/xe/xe_gt_idle.c Riana Tauro 2024-05-24 113 > 38e8c4184ea0ee drivers/gpu/drm/xe/xe_gt_idle.c Riana Tauro 2024-05-24 114 xe_device_assert_mem_access(gt_to_xe(gt)); > 38e8c4184ea0ee drivers/gpu/drm/xe/xe_gt_idle.c Riana Tauro 2024-05-24 115 > c2bf07dd0bbce1 drivers/gpu/drm/xe/xe_gt_idle.c Riana Tauro 2024-09-06 116 vcs_mask = xe_hw_engine_mask_per_class(gt, XE_ENGINE_CLASS_VIDEO_DECODE); > c2bf07dd0bbce1 drivers/gpu/drm/xe/xe_gt_idle.c Riana Tauro 2024-09-06 117 vecs_mask = xe_hw_engine_mask_per_class(gt, XE_ENGINE_CLASS_VIDEO_ENHANCE); > c2bf07dd0bbce1 drivers/gpu/drm/xe/xe_gt_idle.c Riana Tauro 2024-09-06 118 > c2bf07dd0bbce1 drivers/gpu/drm/xe/xe_gt_idle.c Riana Tauro 2024-09-06 119 if (vcs_mask || vecs_mask) > c2bf07dd0bbce1 drivers/gpu/drm/xe/xe_gt_idle.c Riana Tauro 2024-09-06 120 gtidle->powergate_enable = MEDIA_POWERGATE_ENABLE; > c2bf07dd0bbce1 drivers/gpu/drm/xe/xe_gt_idle.c Riana Tauro 2024-09-06 121 > c2bf07dd0bbce1 drivers/gpu/drm/xe/xe_gt_idle.c Riana Tauro 2024-09-06 122 if (!xe_gt_is_media_type(gt)) > c2bf07dd0bbce1 drivers/gpu/drm/xe/xe_gt_idle.c Riana Tauro 2024-09-06 123 gtidle->powergate_enable |= RENDER_POWERGATE_ENABLE; > 38e8c4184ea0ee drivers/gpu/drm/xe/xe_gt_idle.c Riana Tauro 2024-05-24 124 > 38e8c4184ea0ee drivers/gpu/drm/xe/xe_gt_idle.c Riana Tauro 2024-05-24 125 for (i = XE_HW_ENGINE_VCS0, j = 0; i <= XE_HW_ENGINE_VCS7; ++i, ++j) { > 38e8c4184ea0ee drivers/gpu/drm/xe/xe_gt_idle.c Riana Tauro 2024-05-24 126 if ((gt->info.engine_mask & BIT(i))) > c2bf07dd0bbce1 drivers/gpu/drm/xe/xe_gt_idle.c Riana Tauro 2024-09-06 @127 gtidle->powergate_enable |= (VDN_HCP_POWERGATE_ENABLE(j) | > 38e8c4184ea0ee drivers/gpu/drm/xe/xe_gt_idle.c Riana Tauro 2024-05-24 128 VDN_MFXVDENC_POWERGATE_ENABLE(j)); > 38e8c4184ea0ee drivers/gpu/drm/xe/xe_gt_idle.c Riana Tauro 2024-05-24 129 } > 38e8c4184ea0ee drivers/gpu/drm/xe/xe_gt_idle.c Riana Tauro 2024-05-24 130 > a66c19895396e6 drivers/gpu/drm/xe/xe_gt_idle.c Himal Prasad Ghimiray 2024-10-14 131 fw_ref = xe_force_wake_get(gt_to_fw(gt), XE_FW_GT); > 38e8c4184ea0ee drivers/gpu/drm/xe/xe_gt_idle.c Riana Tauro 2024-05-24 132 if (xe->info.skip_guc_pc) { > 38e8c4184ea0ee drivers/gpu/drm/xe/xe_gt_idle.c Riana Tauro 2024-05-24 133 /* > 38e8c4184ea0ee drivers/gpu/drm/xe/xe_gt_idle.c Riana Tauro 2024-05-24 134 * GuC sets the hysteresis value when GuC PC is enabled > 38e8c4184ea0ee drivers/gpu/drm/xe/xe_gt_idle.c Riana Tauro 2024-05-24 135 * else set it to 25 (25 * 1.28us) > 38e8c4184ea0ee drivers/gpu/drm/xe/xe_gt_idle.c Riana Tauro 2024-05-24 136 */ > 50089a9534e258 drivers/gpu/drm/xe/xe_gt_idle.c Matt Roper 2024-09-10 137 xe_mmio_write32(mmio, MEDIA_POWERGATE_IDLE_HYSTERESIS, 25); > 50089a9534e258 drivers/gpu/drm/xe/xe_gt_idle.c Matt Roper 2024-09-10 138 xe_mmio_write32(mmio, RENDER_POWERGATE_IDLE_HYSTERESIS, 25); > 38e8c4184ea0ee drivers/gpu/drm/xe/xe_gt_idle.c Riana Tauro 2024-05-24 139 } > 38e8c4184ea0ee drivers/gpu/drm/xe/xe_gt_idle.c Riana Tauro 2024-05-24 140 > 50089a9534e258 drivers/gpu/drm/xe/xe_gt_idle.c Matt Roper 2024-09-10 141 xe_mmio_write32(mmio, POWERGATE_ENABLE, gtidle->powergate_enable); > a66c19895396e6 drivers/gpu/drm/xe/xe_gt_idle.c Himal Prasad Ghimiray 2024-10-14 142 xe_force_wake_put(gt_to_fw(gt), fw_ref); > 38e8c4184ea0ee drivers/gpu/drm/xe/xe_gt_idle.c Riana Tauro 2024-05-24 143 } > 38e8c4184ea0ee drivers/gpu/drm/xe/xe_gt_idle.c Riana Tauro 2024-05-24 144 > > :::::: The code at line 127 was first introduced by commit > :::::: c2bf07dd0bbce1f318b73b525e21fbc6d67a3a94 drm/xe/xe_gt_idle: modify powergate enable condition > > :::::: TO: Riana Tauro <riana.tauro@xxxxxxxxx> > :::::: CC: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx> > > -- > 0-DAY CI Kernel Test Service > https://github.com/intel/lkp-tests/wiki
