Hi Dave, Thank you for the patch! Yet something to improve: [auto build test ERROR on tip/auto-latest] [also build test ERROR on next-20180323] [cannot apply to tip/x86/core v4.16-rc6] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Dave-Hansen/Use-global-pages-with-PTI/20180324-205009 config: arm-gemini_defconfig (attached as .config) compiler: arm-linux-gnueabi-gcc (Debian 7.2.0-11) 7.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree make.cross ARCH=arm All errors (new ones prefixed by >>): mm/early_ioremap.c: In function '__early_ioremap': >> mm/early_ioremap.c:117:22: error: '__default_kernel_pte_mask' undeclared (first use in this function); did you mean '__current_kernel_time'? pgprot_val(prot) &= __default_kernel_pte_mask; ^~~~~~~~~~~~~~~~~~~~~~~~~ __current_kernel_time mm/early_ioremap.c:117:22: note: each undeclared identifier is reported only once for each function it appears in vim +117 mm/early_ioremap.c 104 105 static void __init __iomem * 106 __early_ioremap(resource_size_t phys_addr, unsigned long size, pgprot_t prot) 107 { 108 unsigned long offset; 109 resource_size_t last_addr; 110 unsigned int nrpages; 111 enum fixed_addresses idx; 112 int i, slot; 113 114 WARN_ON(system_state >= SYSTEM_RUNNING); 115 116 /* Sanitize 'prot' against any unsupported bits: */ > 117 pgprot_val(prot) &= __default_kernel_pte_mask; 118 119 slot = -1; 120 for (i = 0; i < FIX_BTMAPS_SLOTS; i++) { 121 if (!prev_map[i]) { 122 slot = i; 123 break; 124 } 125 } 126 127 if (WARN(slot < 0, "%s(%08llx, %08lx) not found slot\n", 128 __func__, (u64)phys_addr, size)) 129 return NULL; 130 131 /* Don't allow wraparound or zero size */ 132 last_addr = phys_addr + size - 1; 133 if (WARN_ON(!size || last_addr < phys_addr)) 134 return NULL; 135 136 prev_size[slot] = size; 137 /* 138 * Mappings have to be page-aligned 139 */ 140 offset = offset_in_page(phys_addr); 141 phys_addr &= PAGE_MASK; 142 size = PAGE_ALIGN(last_addr + 1) - phys_addr; 143 144 /* 145 * Mappings have to fit in the FIX_BTMAP area. 146 */ 147 nrpages = size >> PAGE_SHIFT; 148 if (WARN_ON(nrpages > NR_FIX_BTMAPS)) 149 return NULL; 150 151 /* 152 * Ok, go for it.. 153 */ 154 idx = FIX_BTMAP_BEGIN - NR_FIX_BTMAPS*slot; 155 while (nrpages > 0) { 156 if (after_paging_init) 157 __late_set_fixmap(idx, phys_addr, prot); 158 else 159 __early_set_fixmap(idx, phys_addr, prot); 160 phys_addr += PAGE_SIZE; 161 --idx; 162 --nrpages; 163 } 164 WARN(early_ioremap_debug, "%s(%08llx, %08lx) [%d] => %08lx + %08lx\n", 165 __func__, (u64)phys_addr, size, slot, offset, slot_virt[slot]); 166 167 prev_map[slot] = (void __iomem *)(offset + slot_virt[slot]); 168 return prev_map[slot]; 169 } 170 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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