Hi Jacob, Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on iommu/next] [also build test WARNING on linux/master linus/master v5.8-rc4 next-20200707] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Jacob-Pan/iommu-vt-d-Misc-tweaks-and-fixes-for-vSVA/20200707-081026 base: https://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu.git next config: x86_64-randconfig-m031-20200707 (attached as .config) compiler: gcc-9 (Debian 9.3.0-14) 9.3.0 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <l...@intel.com> All warnings (new ones prefixed by >>): In file included from include/linux/string.h:6, from include/linux/uuid.h:12, from include/linux/mod_devicetable.h:13, from include/linux/pci.h:27, from drivers/iommu/intel/dmar.c:19: drivers/iommu/intel/dmar.c: In function 'qi_flush_dev_iotlb_pasid': include/linux/bits.h:26:28: warning: comparison of unsigned expression < 0 is always false [-Wtype-limits] 26 | __builtin_constant_p((l) > (h)), (l) > (h), 0))) | ^ include/linux/compiler.h:58:52: note: in definition of macro '__trace_if_var' 58 | #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond)) | ^~~~ >> drivers/iommu/intel/dmar.c:1459:2: note: in expansion of macro 'if' 1459 | if (addr & GENMASK_ULL(size_order + VTD_PAGE_SHIFT, 0)) | ^~ include/linux/bits.h:25:3: note: in expansion of macro 'BUILD_BUG_ON_ZERO' 25 | (BUILD_BUG_ON_ZERO(__builtin_choose_expr( \ | ^~~~~~~~~~~~~~~~~ include/linux/bits.h:45:3: note: in expansion of macro 'GENMASK_INPUT_CHECK' 45 | (GENMASK_INPUT_CHECK(h, l) + __GENMASK_ULL(h, l)) | ^~~~~~~~~~~~~~~~~~~ drivers/iommu/intel/dmar.c:1459:13: note: in expansion of macro 'GENMASK_ULL' 1459 | if (addr & GENMASK_ULL(size_order + VTD_PAGE_SHIFT, 0)) | ^~~~~~~~~~~ include/linux/bits.h:26:40: warning: comparison of unsigned expression < 0 is always false [-Wtype-limits] 26 | __builtin_constant_p((l) > (h)), (l) > (h), 0))) | ^ include/linux/compiler.h:58:52: note: in definition of macro '__trace_if_var' 58 | #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond)) | ^~~~ >> drivers/iommu/intel/dmar.c:1459:2: note: in expansion of macro 'if' 1459 | if (addr & GENMASK_ULL(size_order + VTD_PAGE_SHIFT, 0)) | ^~ include/linux/bits.h:25:3: note: in expansion of macro 'BUILD_BUG_ON_ZERO' 25 | (BUILD_BUG_ON_ZERO(__builtin_choose_expr( \ | ^~~~~~~~~~~~~~~~~ include/linux/bits.h:45:3: note: in expansion of macro 'GENMASK_INPUT_CHECK' 45 | (GENMASK_INPUT_CHECK(h, l) + __GENMASK_ULL(h, l)) | ^~~~~~~~~~~~~~~~~~~ drivers/iommu/intel/dmar.c:1459:13: note: in expansion of macro 'GENMASK_ULL' 1459 | if (addr & GENMASK_ULL(size_order + VTD_PAGE_SHIFT, 0)) | ^~~~~~~~~~~ include/linux/bits.h:26:28: warning: comparison of unsigned expression < 0 is always false [-Wtype-limits] 26 | __builtin_constant_p((l) > (h)), (l) > (h), 0))) | ^ include/linux/compiler.h:58:61: note: in definition of macro '__trace_if_var' 58 | #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond)) | ^~~~ >> drivers/iommu/intel/dmar.c:1459:2: note: in expansion of macro 'if' 1459 | if (addr & GENMASK_ULL(size_order + VTD_PAGE_SHIFT, 0)) | ^~ include/linux/bits.h:25:3: note: in expansion of macro 'BUILD_BUG_ON_ZERO' 25 | (BUILD_BUG_ON_ZERO(__builtin_choose_expr( \ | ^~~~~~~~~~~~~~~~~ include/linux/bits.h:45:3: note: in expansion of macro 'GENMASK_INPUT_CHECK' 45 | (GENMASK_INPUT_CHECK(h, l) + __GENMASK_ULL(h, l)) | ^~~~~~~~~~~~~~~~~~~ drivers/iommu/intel/dmar.c:1459:13: note: in expansion of macro 'GENMASK_ULL' 1459 | if (addr & GENMASK_ULL(size_order + VTD_PAGE_SHIFT, 0)) | ^~~~~~~~~~~ include/linux/bits.h:26:40: warning: comparison of unsigned expression < 0 is always false [-Wtype-limits] 26 | __builtin_constant_p((l) > (h)), (l) > (h), 0))) | ^ include/linux/compiler.h:58:61: note: in definition of macro '__trace_if_var' 58 | #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond)) | ^~~~ >> drivers/iommu/intel/dmar.c:1459:2: note: in expansion of macro 'if' 1459 | if (addr & GENMASK_ULL(size_order + VTD_PAGE_SHIFT, 0)) | ^~ include/linux/bits.h:25:3: note: in expansion of macro 'BUILD_BUG_ON_ZERO' 25 | (BUILD_BUG_ON_ZERO(__builtin_choose_expr( \ | ^~~~~~~~~~~~~~~~~ include/linux/bits.h:45:3: note: in expansion of macro 'GENMASK_INPUT_CHECK' 45 | (GENMASK_INPUT_CHECK(h, l) + __GENMASK_ULL(h, l)) | ^~~~~~~~~~~~~~~~~~~ drivers/iommu/intel/dmar.c:1459:13: note: in expansion of macro 'GENMASK_ULL' 1459 | if (addr & GENMASK_ULL(size_order + VTD_PAGE_SHIFT, 0)) | ^~~~~~~~~~~ include/linux/bits.h:26:28: warning: comparison of unsigned expression < 0 is always false [-Wtype-limits] 26 | __builtin_constant_p((l) > (h)), (l) > (h), 0))) | ^ include/linux/compiler.h:69:3: note: in definition of macro '__trace_if_value' 69 | (cond) ? \ | ^~~~ include/linux/compiler.h:56:28: note: in expansion of macro '__trace_if_var' 56 | #define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) ) | ^~~~~~~~~~~~~~ >> drivers/iommu/intel/dmar.c:1459:2: note: in expansion of macro 'if' 1459 | if (addr & GENMASK_ULL(size_order + VTD_PAGE_SHIFT, 0)) | ^~ include/linux/bits.h:25:3: note: in expansion of macro 'BUILD_BUG_ON_ZERO' 25 | (BUILD_BUG_ON_ZERO(__builtin_choose_expr( \ | ^~~~~~~~~~~~~~~~~ include/linux/bits.h:45:3: note: in expansion of macro 'GENMASK_INPUT_CHECK' 45 | (GENMASK_INPUT_CHECK(h, l) + __GENMASK_ULL(h, l)) | ^~~~~~~~~~~~~~~~~~~ drivers/iommu/intel/dmar.c:1459:13: note: in expansion of macro 'GENMASK_ULL' 1459 | if (addr & GENMASK_ULL(size_order + VTD_PAGE_SHIFT, 0)) | ^~~~~~~~~~~ include/linux/bits.h:26:40: warning: comparison of unsigned expression < 0 is always false [-Wtype-limits] 26 | __builtin_constant_p((l) > (h)), (l) > (h), 0))) | ^ include/linux/compiler.h:69:3: note: in definition of macro '__trace_if_value' 69 | (cond) ? \ | ^~~~ include/linux/compiler.h:56:28: note: in expansion of macro '__trace_if_var' 56 | #define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) ) | ^~~~~~~~~~~~~~ >> drivers/iommu/intel/dmar.c:1459:2: note: in expansion of macro 'if' 1459 | if (addr & GENMASK_ULL(size_order + VTD_PAGE_SHIFT, 0)) | ^~ include/linux/bits.h:25:3: note: in expansion of macro 'BUILD_BUG_ON_ZERO' 25 | (BUILD_BUG_ON_ZERO(__builtin_choose_expr( \ | ^~~~~~~~~~~~~~~~~ include/linux/bits.h:45:3: note: in expansion of macro 'GENMASK_INPUT_CHECK' 45 | (GENMASK_INPUT_CHECK(h, l) + __GENMASK_ULL(h, l)) | ^~~~~~~~~~~~~~~~~~~ drivers/iommu/intel/dmar.c:1459:13: note: in expansion of macro 'GENMASK_ULL' 1459 | if (addr & GENMASK_ULL(size_order + VTD_PAGE_SHIFT, 0)) | ^~~~~~~~~~~ vim +/if +1459 drivers/iommu/intel/dmar.c 1438 1439 /* PASID-based device IOTLB Invalidate */ 1440 void qi_flush_dev_iotlb_pasid(struct intel_iommu *iommu, u16 sid, u16 pfsid, 1441 u32 pasid, u16 qdep, u64 addr, unsigned int size_order) 1442 { 1443 unsigned long mask = 1UL << (VTD_PAGE_SHIFT + size_order - 1); 1444 struct qi_desc desc = {.qw1 = 0, .qw2 = 0, .qw3 = 0}; 1445 1446 desc.qw0 = QI_DEV_EIOTLB_PASID(pasid) | QI_DEV_EIOTLB_SID(sid) | 1447 QI_DEV_EIOTLB_QDEP(qdep) | QI_DEIOTLB_TYPE | 1448 QI_DEV_IOTLB_PFSID(pfsid); 1449 1450 /* 1451 * If S bit is 0, we only flush a single page. If S bit is set, 1452 * The least significant zero bit indicates the invalidation address 1453 * range. VT-d spec 6.5.2.6. 1454 * e.g. address bit 12[0] indicates 8KB, 13[0] indicates 16KB. 1455 * size order = 0 is PAGE_SIZE 4KB 1456 * Max Invs Pending (MIP) is set to 0 for now until we have DIT in 1457 * ECAP. 1458 */ > 1459 if (addr & GENMASK_ULL(size_order + VTD_PAGE_SHIFT, 0)) 1460 pr_warn_ratelimited("Invalidate non-aligned address %llx, order %d\n", addr, size_order); 1461 1462 /* Take page address */ 1463 desc.qw1 = QI_DEV_EIOTLB_ADDR(addr); 1464 1465 if (size_order) { 1466 /* 1467 * Existing 0s in address below size_order may be the least 1468 * significant bit, we must set them to 1s to avoid having 1469 * smaller size than desired. 1470 */ 1471 desc.qw1 |= GENMASK_ULL(size_order + VTD_PAGE_SHIFT, 1472 VTD_PAGE_SHIFT); 1473 /* Clear size_order bit to indicate size */ 1474 desc.qw1 &= ~mask; 1475 /* Set the S bit to indicate flushing more than 1 page */ 1476 desc.qw1 |= QI_DEV_EIOTLB_SIZE; 1477 } 1478 1479 qi_submit_sync(iommu, &desc, 1, 0); 1480 } 1481 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-...@lists.01.org
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