Messages in this thread | | | Date | Fri, 8 Dec 2023 01:49:34 +0800 | From | kernel test robot <> | Subject | arch/mips/kernel/smp-cps.c:165:37: sparse: sparse: cast removes address space '__iomem' of expression |
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tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: bee0e7762ad2c6025b9f5245c040fcc36ef2bde8 commit: fea8826d5fdc4ff5c93e883a738597129614039c MIPS: smp-cps: Don't rely on CP0_CMGCRBASE date: 9 months ago config: mips-randconfig-r122-20231108 (https://download.01.org/0day-ci/archive/20231208/202312080113.FNv9u897-lkp@intel.com/config) compiler: mips-linux-gcc (GCC) 13.2.0 reproduce: (https://download.01.org/0day-ci/archive/20231208/202312080113.FNv9u897-lkp@intel.com/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@intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202312080113.FNv9u897-lkp@intel.com/
sparse warnings: (new ones prefixed by >>) >> arch/mips/kernel/smp-cps.c:165:37: sparse: sparse: cast removes address space '__iomem' of expression arch/mips/kernel/smp-cps.c: note: in included file (through arch/mips/include/asm/mips-cps.h, arch/mips/include/asm/smp-ops.h, arch/mips/include/asm/smp.h, ...): arch/mips/include/asm/mips-cm.h:152:1: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *mem @@ got void * @@ arch/mips/include/asm/mips-cm.h:152:1: sparse: expected void const volatile [noderef] __iomem *mem arch/mips/include/asm/mips-cm.h:152:1: sparse: got void * arch/mips/include/asm/mips-cm.h:152:1: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *mem @@ got void * @@ arch/mips/include/asm/mips-cm.h:152:1: sparse: expected void const volatile [noderef] __iomem *mem arch/mips/include/asm/mips-cm.h:152:1: sparse: got void * arch/mips/include/asm/mips-cm.h:152:1: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *mem @@ got void * @@ arch/mips/include/asm/mips-cm.h:152:1: sparse: expected void const volatile [noderef] __iomem *mem arch/mips/include/asm/mips-cm.h:152:1: sparse: got void * arch/mips/include/asm/mips-cm.h:152:1: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *mem @@ got void * @@ arch/mips/include/asm/mips-cm.h:152:1: sparse: expected void const volatile [noderef] __iomem *mem arch/mips/include/asm/mips-cm.h:152:1: sparse: got void * arch/mips/include/asm/mips-cm.h:152:1: sparse: sparse: incorrect type in return expression (different address spaces) @@ expected void * @@ got void [noderef] __iomem * @@ arch/mips/include/asm/mips-cm.h:152:1: sparse: expected void * arch/mips/include/asm/mips-cm.h:152:1: sparse: got void [noderef] __iomem * arch/mips/include/asm/mips-cm.h:152:1: sparse: sparse: incorrect type in return expression (different address spaces) @@ expected void * @@ got void [noderef] __iomem * @@ arch/mips/include/asm/mips-cm.h:152:1: sparse: expected void * arch/mips/include/asm/mips-cm.h:152:1: sparse: got void [noderef] __iomem * arch/mips/include/asm/mips-cm.h:152:1: sparse: sparse: incorrect type in return expression (different address spaces) @@ expected void * @@ got void [noderef] __iomem * @@ arch/mips/include/asm/mips-cm.h:152:1: sparse: expected void * arch/mips/include/asm/mips-cm.h:152:1: sparse: got void [noderef] __iomem * arch/mips/include/asm/mips-cm.h:152:1: sparse: sparse: incorrect type in return expression (different address spaces) @@ expected void * @@ got void [noderef] __iomem * @@ arch/mips/include/asm/mips-cm.h:152:1: sparse: expected void * arch/mips/include/asm/mips-cm.h:152:1: sparse: got void [noderef] __iomem * arch/mips/include/asm/mips-cm.h:292:1: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *mem @@ got void * @@ arch/mips/include/asm/mips-cm.h:292:1: sparse: expected void const volatile [noderef] __iomem *mem arch/mips/include/asm/mips-cm.h:292:1: sparse: got void * arch/mips/include/asm/mips-cm.h:292:1: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *mem @@ got void * @@ arch/mips/include/asm/mips-cm.h:292:1: sparse: expected void const volatile [noderef] __iomem *mem arch/mips/include/asm/mips-cm.h:292:1: sparse: got void * arch/mips/include/asm/mips-cm.h:292:1: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *mem @@ got void * @@ arch/mips/include/asm/mips-cm.h:292:1: sparse: expected void const volatile [noderef] __iomem *mem arch/mips/include/asm/mips-cm.h:292:1: sparse: got void * arch/mips/include/asm/mips-cm.h:292:1: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *mem @@ got void * @@ arch/mips/include/asm/mips-cm.h:292:1: sparse: expected void const volatile [noderef] __iomem *mem arch/mips/include/asm/mips-cm.h:292:1: sparse: got void * arch/mips/include/asm/mips-cm.h:292:1: sparse: sparse: incorrect type in return expression (different address spaces) @@ expected void * @@ got void [noderef] __iomem * @@ arch/mips/include/asm/mips-cm.h:292:1: sparse: expected void * arch/mips/include/asm/mips-cm.h:292:1: sparse: got void [noderef] __iomem * arch/mips/include/asm/mips-cm.h:292:1: sparse: sparse: incorrect type in return expression (different address spaces) @@ expected void * @@ got void [noderef] __iomem * @@ arch/mips/include/asm/mips-cm.h:292:1: sparse: expected void * arch/mips/include/asm/mips-cm.h:292:1: sparse: got void [noderef] __iomem * arch/mips/include/asm/mips-cm.h:292:1: sparse: sparse: incorrect type in return expression (different address spaces) @@ expected void * @@ got void [noderef] __iomem * @@ arch/mips/include/asm/mips-cm.h:292:1: sparse: expected void * arch/mips/include/asm/mips-cm.h:292:1: sparse: got void [noderef] __iomem * arch/mips/include/asm/mips-cm.h:292:1: sparse: sparse: incorrect type in return expression (different address spaces) @@ expected void * @@ got void [noderef] __iomem * @@ arch/mips/include/asm/mips-cm.h:292:1: sparse: expected void * arch/mips/include/asm/mips-cm.h:292:1: sparse: got void [noderef] __iomem * arch/mips/kernel/smp-cps.c: note: in included file (through arch/mips/include/asm/mips-cps.h, arch/mips/include/asm/smp-ops.h, arch/mips/include/asm/smp.h, ...): arch/mips/include/asm/mips-cpc.h:149:1: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *mem @@ got void * @@ arch/mips/include/asm/mips-cpc.h:149:1: sparse: expected void const volatile [noderef] __iomem *mem arch/mips/include/asm/mips-cpc.h:149:1: sparse: got void * arch/mips/include/asm/mips-cpc.h:149:1: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *mem @@ got void * @@ arch/mips/include/asm/mips-cpc.h:149:1: sparse: expected void const volatile [noderef] __iomem *mem arch/mips/include/asm/mips-cpc.h:149:1: sparse: got void * arch/mips/include/asm/mips-cpc.h:149:1: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *mem @@ got void * @@ arch/mips/include/asm/mips-cpc.h:149:1: sparse: expected void const volatile [noderef] __iomem *mem arch/mips/include/asm/mips-cpc.h:149:1: sparse: got void * arch/mips/include/asm/mips-cpc.h:149:1: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *mem @@ got void * @@ arch/mips/include/asm/mips-cpc.h:149:1: sparse: expected void const volatile [noderef] __iomem *mem arch/mips/include/asm/mips-cpc.h:149:1: sparse: got void * arch/mips/include/asm/mips-cpc.h:149:1: sparse: sparse: incorrect type in return expression (different address spaces) @@ expected void * @@ got void [noderef] __iomem * @@ arch/mips/include/asm/mips-cpc.h:149:1: sparse: expected void * arch/mips/include/asm/mips-cpc.h:149:1: sparse: got void [noderef] __iomem * arch/mips/include/asm/mips-cpc.h:149:1: sparse: sparse: incorrect type in return expression (different address spaces) @@ expected void * @@ got void [noderef] __iomem * @@ arch/mips/include/asm/mips-cpc.h:149:1: sparse: expected void * arch/mips/include/asm/mips-cpc.h:149:1: sparse: got void [noderef] __iomem * arch/mips/include/asm/mips-cpc.h:149:1: sparse: sparse: incorrect type in return expression (different address spaces) @@ expected void * @@ got void [noderef] __iomem * @@ arch/mips/include/asm/mips-cpc.h:149:1: sparse: expected void * arch/mips/include/asm/mips-cpc.h:149:1: sparse: got void [noderef] __iomem * arch/mips/include/asm/mips-cpc.h:149:1: sparse: sparse: incorrect type in return expression (different address spaces) @@ expected void * @@ got void [noderef] __iomem * @@ arch/mips/include/asm/mips-cpc.h:149:1: sparse: expected void * arch/mips/include/asm/mips-cpc.h:149:1: sparse: got void [noderef] __iomem * arch/mips/kernel/smp-cps.c: note: in included file (through arch/mips/include/asm/mips-cps.h, arch/mips/include/asm/smp-ops.h, arch/mips/include/asm/smp.h, ...): arch/mips/include/asm/mips-cm.h:152:1: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *mem @@ got void * @@ arch/mips/include/asm/mips-cm.h:152:1: sparse: expected void const volatile [noderef] __iomem *mem arch/mips/include/asm/mips-cm.h:152:1: sparse: got void * arch/mips/include/asm/mips-cm.h:152:1: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *mem @@ got void * @@ arch/mips/include/asm/mips-cm.h:152:1: sparse: expected void const volatile [noderef] __iomem *mem arch/mips/include/asm/mips-cm.h:152:1: sparse: got void * arch/mips/include/asm/mips-cm.h:152:1: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *mem @@ got void * @@ arch/mips/include/asm/mips-cm.h:152:1: sparse: expected void const volatile [noderef] __iomem *mem arch/mips/include/asm/mips-cm.h:152:1: sparse: got void * arch/mips/include/asm/mips-cm.h:152:1: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *mem @@ got void * @@ arch/mips/include/asm/mips-cm.h:152:1: sparse: expected void const volatile [noderef] __iomem *mem arch/mips/include/asm/mips-cm.h:152:1: sparse: got void * arch/mips/include/asm/mips-cm.h:152:1: sparse: sparse: incorrect type in return expression (different address spaces) @@ expected void * @@ got void [noderef] __iomem * @@ arch/mips/include/asm/mips-cm.h:152:1: sparse: expected void * arch/mips/include/asm/mips-cm.h:152:1: sparse: got void [noderef] __iomem * arch/mips/include/asm/mips-cm.h:152:1: sparse: sparse: incorrect type in return expression (different address spaces) @@ expected void * @@ got void [noderef] __iomem * @@ arch/mips/include/asm/mips-cm.h:152:1: sparse: expected void * arch/mips/include/asm/mips-cm.h:152:1: sparse: got void [noderef] __iomem * arch/mips/include/asm/mips-cm.h:152:1: sparse: sparse: incorrect type in return expression (different address spaces) @@ expected void * @@ got void [noderef] __iomem * @@ arch/mips/include/asm/mips-cm.h:152:1: sparse: expected void * arch/mips/include/asm/mips-cm.h:152:1: sparse: got void [noderef] __iomem * arch/mips/include/asm/mips-cm.h:152:1: sparse: sparse: incorrect type in return expression (different address spaces) @@ expected void * @@ got void [noderef] __iomem * @@ arch/mips/include/asm/mips-cm.h:152:1: sparse: expected void * arch/mips/include/asm/mips-cm.h:152:1: sparse: got void [noderef] __iomem * arch/mips/include/asm/mips-cm.h:131:1: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *mem @@ got void * @@
vim +/__iomem +165 arch/mips/kernel/smp-cps.c
118 119 static void __init cps_prepare_cpus(unsigned int max_cpus) 120 { 121 unsigned ncores, core_vpes, c, cca; 122 bool cca_unsuitable, cores_limited; 123 u32 *entry_code; 124 125 mips_mt_set_cpuoptions(); 126 127 /* Detect whether the CCA is unsuited to multi-core SMP */ 128 cca = read_c0_config() & CONF_CM_CMASK; 129 switch (cca) { 130 case 0x4: /* CWBE */ 131 case 0x5: /* CWB */ 132 /* The CCA is coherent, multi-core is fine */ 133 cca_unsuitable = false; 134 break; 135 136 default: 137 /* CCA is not coherent, multi-core is not usable */ 138 cca_unsuitable = true; 139 } 140 141 /* Warn the user if the CCA prevents multi-core */ 142 cores_limited = false; 143 if (cca_unsuitable || cpu_has_dc_aliases) { 144 for_each_present_cpu(c) { 145 if (cpus_are_siblings(smp_processor_id(), c)) 146 continue; 147 148 set_cpu_present(c, false); 149 cores_limited = true; 150 } 151 } 152 if (cores_limited) 153 pr_warn("Using only one core due to %s%s%s\n", 154 cca_unsuitable ? "unsuitable CCA" : "", 155 (cca_unsuitable && cpu_has_dc_aliases) ? " & " : "", 156 cpu_has_dc_aliases ? "dcache aliasing" : ""); 157 158 /* 159 * Patch the start of mips_cps_core_entry to provide: 160 * 161 * s0 = kseg0 CCA 162 */ 163 entry_code = (u32 *)&mips_cps_core_entry; 164 uasm_i_addiu(&entry_code, 16, 0, cca); > 165 UASM_i_LA(&entry_code, 17, (long)mips_gcr_base); 166 BUG_ON((void *)entry_code > (void *)&mips_cps_core_entry_patch_end); 167 blast_dcache_range((unsigned long)&mips_cps_core_entry, 168 (unsigned long)entry_code); 169 bc_wback_inv((unsigned long)&mips_cps_core_entry, 170 (void *)entry_code - (void *)&mips_cps_core_entry); 171 __sync(); 172 173 /* Allocate core boot configuration structs */ 174 ncores = mips_cps_numcores(0); 175 mips_cps_core_bootcfg = kcalloc(ncores, sizeof(*mips_cps_core_bootcfg), 176 GFP_KERNEL); 177 if (!mips_cps_core_bootcfg) { 178 pr_err("Failed to allocate boot config for %u cores\n", ncores); 179 goto err_out; 180 } 181 182 /* Allocate VPE boot configuration structs */ 183 for (c = 0; c < ncores; c++) { 184 core_vpes = core_vpe_count(0, c); 185 mips_cps_core_bootcfg[c].vpe_config = kcalloc(core_vpes, 186 sizeof(*mips_cps_core_bootcfg[c].vpe_config), 187 GFP_KERNEL); 188 if (!mips_cps_core_bootcfg[c].vpe_config) { 189 pr_err("Failed to allocate %u VPE boot configs\n", 190 core_vpes); 191 goto err_out; 192 } 193 } 194 195 /* Mark this CPU as booted */ 196 atomic_set(&mips_cps_core_bootcfg[cpu_core(¤t_cpu_data)].vpe_mask, 197 1 << cpu_vpe_id(¤t_cpu_data)); 198 199 return; 200 err_out: 201 /* Clean up allocations */ 202 if (mips_cps_core_bootcfg) { 203 for (c = 0; c < ncores; c++) 204 kfree(mips_cps_core_bootcfg[c].vpe_config); 205 kfree(mips_cps_core_bootcfg); 206 mips_cps_core_bootcfg = NULL; 207 } 208 209 /* Effectively disable SMP by declaring CPUs not present */ 210 for_each_possible_cpu(c) { 211 if (c == 0) 212 continue; 213 set_cpu_present(c, false); 214 } 215 } 216
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