Hi Jim, kernel test robot noticed the following build errors: [auto build test ERROR on arm/for-next] [also build test ERROR on linus/master hch-configfs/for-next arm/fixes v6.6-rc3 next-20230927] [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#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Jim-Quinlan/ARM-Select-DMA_DIRECT_REMAP-to-fix-restricted-DMA/20230927-025212 base: git://git.armlinux.org.uk/~rmk/linux-arm.git for-next patch link: https://lore.kernel.org/r/20230926175208.9298-2-james.quinlan%40broadcom.com patch subject: [PATCH v1 1/1] ARM: Select DMA_DIRECT_REMAP to fix restricted DMA config: arm-allnoconfig (https://download.01.org/0day-ci/archive/20230927/202309271425.sxoPXWOX-lkp@xxxxxxxxx/config) compiler: arm-linux-gnueabi-gcc (GCC) 13.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20230927/202309271425.sxoPXWOX-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/202309271425.sxoPXWOX-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): kernel/dma/pool.c: In function 'atomic_pool_expand': >> kernel/dma/pool.c:105:44: error: implicit declaration of function 'pgprot_dmacoherent' [-Werror=implicit-function-declaration] 105 | pgprot_dmacoherent(PAGE_KERNEL), | ^~~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +/pgprot_dmacoherent +105 kernel/dma/pool.c d7e673ec2c8e0ea Nicolas Saenz Julienne 2020-08-14 78 54adadf9b08571f David Rientjes 2020-04-20 79 static int atomic_pool_expand(struct gen_pool *pool, size_t pool_size, 54adadf9b08571f David Rientjes 2020-04-20 80 gfp_t gfp) e860c299ac0d738 David Rientjes 2020-04-14 81 { 54adadf9b08571f David Rientjes 2020-04-20 82 unsigned int order; 892fc9f6835ecf0 Dan Carpenter 2020-08-26 83 struct page *page = NULL; e860c299ac0d738 David Rientjes 2020-04-14 84 void *addr; 54adadf9b08571f David Rientjes 2020-04-20 85 int ret = -ENOMEM; 54adadf9b08571f David Rientjes 2020-04-20 86 23baf831a32c04f Kirill A. Shutemov 2023-03-15 87 /* Cannot allocate larger than MAX_ORDER */ 23baf831a32c04f Kirill A. Shutemov 2023-03-15 88 order = min(get_order(pool_size), MAX_ORDER); 54adadf9b08571f David Rientjes 2020-04-20 89 54adadf9b08571f David Rientjes 2020-04-20 90 do { 54adadf9b08571f David Rientjes 2020-04-20 91 pool_size = 1 << (PAGE_SHIFT + order); d7e673ec2c8e0ea Nicolas Saenz Julienne 2020-08-14 92 if (cma_in_zone(gfp)) d7e673ec2c8e0ea Nicolas Saenz Julienne 2020-08-14 93 page = dma_alloc_from_contiguous(NULL, 1 << order, d7e673ec2c8e0ea Nicolas Saenz Julienne 2020-08-14 94 order, false); d7e673ec2c8e0ea Nicolas Saenz Julienne 2020-08-14 95 if (!page) c84dc6e68a1d246 David Rientjes 2020-04-14 96 page = alloc_pages(gfp, order); 54adadf9b08571f David Rientjes 2020-04-20 97 } while (!page && order-- > 0); e860c299ac0d738 David Rientjes 2020-04-14 98 if (!page) e860c299ac0d738 David Rientjes 2020-04-14 99 goto out; e860c299ac0d738 David Rientjes 2020-04-14 100 c84dc6e68a1d246 David Rientjes 2020-04-14 101 arch_dma_prep_coherent(page, pool_size); e860c299ac0d738 David Rientjes 2020-04-14 102 76a19940bd62a81 David Rientjes 2020-04-14 103 #ifdef CONFIG_DMA_DIRECT_REMAP c84dc6e68a1d246 David Rientjes 2020-04-14 104 addr = dma_common_contiguous_remap(page, pool_size, e860c299ac0d738 David Rientjes 2020-04-14 @105 pgprot_dmacoherent(PAGE_KERNEL), e860c299ac0d738 David Rientjes 2020-04-14 106 __builtin_return_address(0)); e860c299ac0d738 David Rientjes 2020-04-14 107 if (!addr) 54adadf9b08571f David Rientjes 2020-04-20 108 goto free_page; 76a19940bd62a81 David Rientjes 2020-04-14 109 #else 76a19940bd62a81 David Rientjes 2020-04-14 110 addr = page_to_virt(page); 76a19940bd62a81 David Rientjes 2020-04-14 111 #endif 76a19940bd62a81 David Rientjes 2020-04-14 112 /* 76a19940bd62a81 David Rientjes 2020-04-14 113 * Memory in the atomic DMA pools must be unencrypted, the pools do not 2f5388a29be82a6 Christoph Hellwig 2020-08-17 114 * shrink so no re-encryption occurs in dma_direct_free(). 76a19940bd62a81 David Rientjes 2020-04-14 115 */ 76a19940bd62a81 David Rientjes 2020-04-14 116 ret = set_memory_decrypted((unsigned long)page_to_virt(page), 76a19940bd62a81 David Rientjes 2020-04-14 117 1 << order); 76a19940bd62a81 David Rientjes 2020-04-14 118 if (ret) 76a19940bd62a81 David Rientjes 2020-04-14 119 goto remove_mapping; 54adadf9b08571f David Rientjes 2020-04-20 120 ret = gen_pool_add_virt(pool, (unsigned long)addr, page_to_phys(page), 54adadf9b08571f David Rientjes 2020-04-20 121 pool_size, NUMA_NO_NODE); e860c299ac0d738 David Rientjes 2020-04-14 122 if (ret) 76a19940bd62a81 David Rientjes 2020-04-14 123 goto encrypt_mapping; e860c299ac0d738 David Rientjes 2020-04-14 124 2edc5bb3c5cc421 David Rientjes 2020-04-14 125 dma_atomic_pool_size_add(gfp, pool_size); e860c299ac0d738 David Rientjes 2020-04-14 126 return 0; e860c299ac0d738 David Rientjes 2020-04-14 127 76a19940bd62a81 David Rientjes 2020-04-14 128 encrypt_mapping: 76a19940bd62a81 David Rientjes 2020-04-14 129 ret = set_memory_encrypted((unsigned long)page_to_virt(page), 76a19940bd62a81 David Rientjes 2020-04-14 130 1 << order); 76a19940bd62a81 David Rientjes 2020-04-14 131 if (WARN_ON_ONCE(ret)) { 76a19940bd62a81 David Rientjes 2020-04-14 132 /* Decrypt succeeded but encrypt failed, purposely leak */ 76a19940bd62a81 David Rientjes 2020-04-14 133 goto out; 76a19940bd62a81 David Rientjes 2020-04-14 134 } e860c299ac0d738 David Rientjes 2020-04-14 135 remove_mapping: 76a19940bd62a81 David Rientjes 2020-04-14 136 #ifdef CONFIG_DMA_DIRECT_REMAP c84dc6e68a1d246 David Rientjes 2020-04-14 137 dma_common_free_remap(addr, pool_size); 76a19940bd62a81 David Rientjes 2020-04-14 138 #endif 76a19940bd62a81 David Rientjes 2020-04-14 139 free_page: __maybe_unused c84dc6e68a1d246 David Rientjes 2020-04-14 140 __free_pages(page, order); e860c299ac0d738 David Rientjes 2020-04-14 141 out: 54adadf9b08571f David Rientjes 2020-04-20 142 return ret; 54adadf9b08571f David Rientjes 2020-04-20 143 } 54adadf9b08571f David Rientjes 2020-04-20 144 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
