Hi Vitaly, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on kvm/linux-next] [also build test WARNING on v4.16 next-20180412] [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/Vitaly-Kuznetsov/KVM-x86-hyperv-PV-TLB-flush-for-Windows-guests/20180413-025205 base: https://git.kernel.org/pub/scm/virt/kvm/kvm.git linux-next reproduce: # apt-get install sparse make ARCH=x86_64 allmodconfig make C=1 CF=-D__CHECK_ENDIAN__ sparse warnings: (new ones prefixed by >>) >> arch/x86/hyperv/mmu.c:107:22: sparse: incorrect type in initializer (different address spaces) @@ expected void const [noderef] <asn:3>*__vpp_verify @@ got struct hv_void const [noderef] <asn:3>*__vpp_verify @@ arch/x86/hyperv/mmu.c:107:22: expected void const [noderef] <asn:3>*__vpp_verify arch/x86/hyperv/mmu.c:107:22: got struct hv_tlb_flush [noderef] <asn:3>**<noident> >> arch/x86/hyperv/mmu.c:107:20: sparse: incorrect type in assignment (different address spaces) @@ expected struct hv_tlb_flush **flush_pcpu @@ got struct hv_tlb_flustruct hv_tlb_flush **flush_pcpu @@ arch/x86/hyperv/mmu.c:107:20: expected struct hv_tlb_flush **flush_pcpu arch/x86/hyperv/mmu.c:107:20: got struct hv_tlb_flush [noderef] <asn:3>**<noident> >> arch/x86/hyperv/mmu.c:194:22: sparse: incorrect type in initializer (different address spaces) @@ expected void const [noderef] <asn:3>*__vpp_verify @@ got struct hv_tlbvoid const [noderef] <asn:3>*__vpp_verify @@ arch/x86/hyperv/mmu.c:194:22: expected void const [noderef] <asn:3>*__vpp_verify arch/x86/hyperv/mmu.c:194:22: got struct hv_tlb_flush_ex [noderef] <asn:3>**<noident> >> arch/x86/hyperv/mmu.c:194:20: sparse: incorrect type in assignment (different address spaces) @@ expected struct hv_tlb_flush_ex **flush_pcpu @@ got struct hv_tlb_flustruct hv_tlb_flush_ex **flush_pcpu @@ arch/x86/hyperv/mmu.c:194:20: expected struct hv_tlb_flush_ex **flush_pcpu arch/x86/hyperv/mmu.c:194:20: got struct hv_tlb_flush_ex [noderef] <asn:3>**<noident> >> arch/x86/hyperv/mmu.c:286:28: sparse: incorrect type in assignment (different address spaces) @@ expected struct hv_tlb_flush [noderef] <asn:3>**static [toplevel] pcpu_flush @@ got h [noderef] <asn:3>**static [toplevel] pcpu_flush @@ arch/x86/hyperv/mmu.c:286:28: expected struct hv_tlb_flush [noderef] <asn:3>**static [toplevel] pcpu_flush arch/x86/hyperv/mmu.c:286:28: got struct hv_tlb_flush *[noderef] <asn:3>*<noident> >> arch/x86/hyperv/mmu.c:288:31: sparse: incorrect type in assignment (different address spaces) @@ expected struct hv_tlb_flush_ex [noderef] <asn:3>**static [toplevel] pcpu_flush_ex @@ got h_ex [noderef] <asn:3>**static [toplevel] pcpu_flush_ex @@ arch/x86/hyperv/mmu.c:288:31: expected struct hv_tlb_flush_ex [noderef] <asn:3>**static [toplevel] pcpu_flush_ex arch/x86/hyperv/mmu.c:288:31: got struct hv_tlb_flush_ex *[noderef] <asn:3>*<noident> vim +107 arch/x86/hyperv/mmu.c 628f54cc6 Vitaly Kuznetsov 2017-08-02 87 2ffd9e33c Vitaly Kuznetsov 2017-08-02 88 static void hyperv_flush_tlb_others(const struct cpumask *cpus, 2ffd9e33c Vitaly Kuznetsov 2017-08-02 89 const struct flush_tlb_info *info) 2ffd9e33c Vitaly Kuznetsov 2017-08-02 90 { 2ffd9e33c Vitaly Kuznetsov 2017-08-02 91 int cpu, vcpu, gva_n, max_gvas; 84d437db6 Vitaly Kuznetsov 2018-04-11 92 struct hv_tlb_flush **flush_pcpu; 84d437db6 Vitaly Kuznetsov 2018-04-11 93 struct hv_tlb_flush *flush; 2ffd9e33c Vitaly Kuznetsov 2017-08-02 94 u64 status = U64_MAX; 2ffd9e33c Vitaly Kuznetsov 2017-08-02 95 unsigned long flags; 2ffd9e33c Vitaly Kuznetsov 2017-08-02 96 773b79f7a Vitaly Kuznetsov 2017-08-02 97 trace_hyperv_mmu_flush_tlb_others(cpus, info); 773b79f7a Vitaly Kuznetsov 2017-08-02 98 2ffd9e33c Vitaly Kuznetsov 2017-08-02 99 if (!pcpu_flush || !hv_hypercall_pg) 2ffd9e33c Vitaly Kuznetsov 2017-08-02 100 goto do_native; 2ffd9e33c Vitaly Kuznetsov 2017-08-02 101 2ffd9e33c Vitaly Kuznetsov 2017-08-02 102 if (cpumask_empty(cpus)) 2ffd9e33c Vitaly Kuznetsov 2017-08-02 103 return; 2ffd9e33c Vitaly Kuznetsov 2017-08-02 104 2ffd9e33c Vitaly Kuznetsov 2017-08-02 105 local_irq_save(flags); 2ffd9e33c Vitaly Kuznetsov 2017-08-02 106 60d73a7c9 Vitaly Kuznetsov 2017-10-05 @107 flush_pcpu = this_cpu_ptr(pcpu_flush); 60d73a7c9 Vitaly Kuznetsov 2017-10-05 108 60d73a7c9 Vitaly Kuznetsov 2017-10-05 109 if (unlikely(!*flush_pcpu)) 60d73a7c9 Vitaly Kuznetsov 2017-10-05 110 *flush_pcpu = page_address(alloc_page(GFP_ATOMIC)); 60d73a7c9 Vitaly Kuznetsov 2017-10-05 111 60d73a7c9 Vitaly Kuznetsov 2017-10-05 112 flush = *flush_pcpu; 60d73a7c9 Vitaly Kuznetsov 2017-10-05 113 60d73a7c9 Vitaly Kuznetsov 2017-10-05 114 if (unlikely(!flush)) { 60d73a7c9 Vitaly Kuznetsov 2017-10-05 115 local_irq_restore(flags); 60d73a7c9 Vitaly Kuznetsov 2017-10-05 116 goto do_native; 60d73a7c9 Vitaly Kuznetsov 2017-10-05 117 } 2ffd9e33c Vitaly Kuznetsov 2017-08-02 118 2ffd9e33c Vitaly Kuznetsov 2017-08-02 119 if (info->mm) { 617ab45c9 Vitaly Kuznetsov 2018-01-24 120 /* 617ab45c9 Vitaly Kuznetsov 2018-01-24 121 * AddressSpace argument must match the CR3 with PCID bits 617ab45c9 Vitaly Kuznetsov 2018-01-24 122 * stripped out. 617ab45c9 Vitaly Kuznetsov 2018-01-24 123 */ 2ffd9e33c Vitaly Kuznetsov 2017-08-02 124 flush->address_space = virt_to_phys(info->mm->pgd); 617ab45c9 Vitaly Kuznetsov 2018-01-24 125 flush->address_space &= CR3_ADDR_MASK; 2ffd9e33c Vitaly Kuznetsov 2017-08-02 126 flush->flags = 0; 2ffd9e33c Vitaly Kuznetsov 2017-08-02 127 } else { 2ffd9e33c Vitaly Kuznetsov 2017-08-02 128 flush->address_space = 0; 2ffd9e33c Vitaly Kuznetsov 2017-08-02 129 flush->flags = HV_FLUSH_ALL_VIRTUAL_ADDRESS_SPACES; 2ffd9e33c Vitaly Kuznetsov 2017-08-02 130 } 2ffd9e33c Vitaly Kuznetsov 2017-08-02 131 2ffd9e33c Vitaly Kuznetsov 2017-08-02 132 flush->processor_mask = 0; 2ffd9e33c Vitaly Kuznetsov 2017-08-02 133 if (cpumask_equal(cpus, cpu_present_mask)) { 2ffd9e33c Vitaly Kuznetsov 2017-08-02 134 flush->flags |= HV_FLUSH_ALL_PROCESSORS; 2ffd9e33c Vitaly Kuznetsov 2017-08-02 135 } else { 2ffd9e33c Vitaly Kuznetsov 2017-08-02 136 for_each_cpu(cpu, cpus) { 2ffd9e33c Vitaly Kuznetsov 2017-08-02 137 vcpu = hv_cpu_number_to_vp_number(cpu); 2ffd9e33c Vitaly Kuznetsov 2017-08-02 138 if (vcpu >= 64) 2ffd9e33c Vitaly Kuznetsov 2017-08-02 139 goto do_native; 2ffd9e33c Vitaly Kuznetsov 2017-08-02 140 2ffd9e33c Vitaly Kuznetsov 2017-08-02 141 __set_bit(vcpu, (unsigned long *) 2ffd9e33c Vitaly Kuznetsov 2017-08-02 142 &flush->processor_mask); 2ffd9e33c Vitaly Kuznetsov 2017-08-02 143 } 2ffd9e33c Vitaly Kuznetsov 2017-08-02 144 } 2ffd9e33c Vitaly Kuznetsov 2017-08-02 145 2ffd9e33c Vitaly Kuznetsov 2017-08-02 146 /* 2ffd9e33c Vitaly Kuznetsov 2017-08-02 147 * We can flush not more than max_gvas with one hypercall. Flush the 2ffd9e33c Vitaly Kuznetsov 2017-08-02 148 * whole address space if we were asked to do more. 2ffd9e33c Vitaly Kuznetsov 2017-08-02 149 */ 2ffd9e33c Vitaly Kuznetsov 2017-08-02 150 max_gvas = (PAGE_SIZE - sizeof(*flush)) / sizeof(flush->gva_list[0]); 2ffd9e33c Vitaly Kuznetsov 2017-08-02 151 2ffd9e33c Vitaly Kuznetsov 2017-08-02 152 if (info->end == TLB_FLUSH_ALL) { 2ffd9e33c Vitaly Kuznetsov 2017-08-02 153 flush->flags |= HV_FLUSH_NON_GLOBAL_MAPPINGS_ONLY; 2ffd9e33c Vitaly Kuznetsov 2017-08-02 154 status = hv_do_hypercall(HVCALL_FLUSH_VIRTUAL_ADDRESS_SPACE, 2ffd9e33c Vitaly Kuznetsov 2017-08-02 155 flush, NULL); 2ffd9e33c Vitaly Kuznetsov 2017-08-02 156 } else if (info->end && 2ffd9e33c Vitaly Kuznetsov 2017-08-02 157 ((info->end - info->start)/HV_TLB_FLUSH_UNIT) > max_gvas) { 2ffd9e33c Vitaly Kuznetsov 2017-08-02 158 status = hv_do_hypercall(HVCALL_FLUSH_VIRTUAL_ADDRESS_SPACE, 2ffd9e33c Vitaly Kuznetsov 2017-08-02 159 flush, NULL); 2ffd9e33c Vitaly Kuznetsov 2017-08-02 160 } else { 2ffd9e33c Vitaly Kuznetsov 2017-08-02 161 gva_n = fill_gva_list(flush->gva_list, 0, 2ffd9e33c Vitaly Kuznetsov 2017-08-02 162 info->start, info->end); 2ffd9e33c Vitaly Kuznetsov 2017-08-02 163 status = hv_do_rep_hypercall(HVCALL_FLUSH_VIRTUAL_ADDRESS_LIST, 2ffd9e33c Vitaly Kuznetsov 2017-08-02 164 gva_n, 0, flush, NULL); 2ffd9e33c Vitaly Kuznetsov 2017-08-02 165 } 2ffd9e33c Vitaly Kuznetsov 2017-08-02 166 2ffd9e33c Vitaly Kuznetsov 2017-08-02 167 local_irq_restore(flags); 2ffd9e33c Vitaly Kuznetsov 2017-08-02 168 2ffd9e33c Vitaly Kuznetsov 2017-08-02 169 if (!(status & HV_HYPERCALL_RESULT_MASK)) 2ffd9e33c Vitaly Kuznetsov 2017-08-02 170 return; 2ffd9e33c Vitaly Kuznetsov 2017-08-02 171 do_native: 2ffd9e33c Vitaly Kuznetsov 2017-08-02 172 native_flush_tlb_others(cpus, info); 2ffd9e33c Vitaly Kuznetsov 2017-08-02 173 } 2ffd9e33c Vitaly Kuznetsov 2017-08-02 174 628f54cc6 Vitaly Kuznetsov 2017-08-02 175 static void hyperv_flush_tlb_others_ex(const struct cpumask *cpus, 628f54cc6 Vitaly Kuznetsov 2017-08-02 176 const struct flush_tlb_info *info) 628f54cc6 Vitaly Kuznetsov 2017-08-02 177 { 628f54cc6 Vitaly Kuznetsov 2017-08-02 178 int nr_bank = 0, max_gvas, gva_n; 84d437db6 Vitaly Kuznetsov 2018-04-11 179 struct hv_tlb_flush_ex **flush_pcpu; 84d437db6 Vitaly Kuznetsov 2018-04-11 180 struct hv_tlb_flush_ex *flush; 628f54cc6 Vitaly Kuznetsov 2017-08-02 181 u64 status = U64_MAX; 628f54cc6 Vitaly Kuznetsov 2017-08-02 182 unsigned long flags; 628f54cc6 Vitaly Kuznetsov 2017-08-02 183 773b79f7a Vitaly Kuznetsov 2017-08-02 184 trace_hyperv_mmu_flush_tlb_others(cpus, info); 773b79f7a Vitaly Kuznetsov 2017-08-02 185 628f54cc6 Vitaly Kuznetsov 2017-08-02 186 if (!pcpu_flush_ex || !hv_hypercall_pg) 628f54cc6 Vitaly Kuznetsov 2017-08-02 187 goto do_native; 628f54cc6 Vitaly Kuznetsov 2017-08-02 188 628f54cc6 Vitaly Kuznetsov 2017-08-02 189 if (cpumask_empty(cpus)) 628f54cc6 Vitaly Kuznetsov 2017-08-02 190 return; 628f54cc6 Vitaly Kuznetsov 2017-08-02 191 628f54cc6 Vitaly Kuznetsov 2017-08-02 192 local_irq_save(flags); 628f54cc6 Vitaly Kuznetsov 2017-08-02 193 60d73a7c9 Vitaly Kuznetsov 2017-10-05 @194 flush_pcpu = this_cpu_ptr(pcpu_flush_ex); 60d73a7c9 Vitaly Kuznetsov 2017-10-05 195 60d73a7c9 Vitaly Kuznetsov 2017-10-05 196 if (unlikely(!*flush_pcpu)) 60d73a7c9 Vitaly Kuznetsov 2017-10-05 197 *flush_pcpu = page_address(alloc_page(GFP_ATOMIC)); 60d73a7c9 Vitaly Kuznetsov 2017-10-05 198 60d73a7c9 Vitaly Kuznetsov 2017-10-05 199 flush = *flush_pcpu; 60d73a7c9 Vitaly Kuznetsov 2017-10-05 200 60d73a7c9 Vitaly Kuznetsov 2017-10-05 201 if (unlikely(!flush)) { 60d73a7c9 Vitaly Kuznetsov 2017-10-05 202 local_irq_restore(flags); 60d73a7c9 Vitaly Kuznetsov 2017-10-05 203 goto do_native; 60d73a7c9 Vitaly Kuznetsov 2017-10-05 204 } 628f54cc6 Vitaly Kuznetsov 2017-08-02 205 628f54cc6 Vitaly Kuznetsov 2017-08-02 206 if (info->mm) { 617ab45c9 Vitaly Kuznetsov 2018-01-24 207 /* 617ab45c9 Vitaly Kuznetsov 2018-01-24 208 * AddressSpace argument must match the CR3 with PCID bits 617ab45c9 Vitaly Kuznetsov 2018-01-24 209 * stripped out. 617ab45c9 Vitaly Kuznetsov 2018-01-24 210 */ 628f54cc6 Vitaly Kuznetsov 2017-08-02 211 flush->address_space = virt_to_phys(info->mm->pgd); 617ab45c9 Vitaly Kuznetsov 2018-01-24 212 flush->address_space &= CR3_ADDR_MASK; 628f54cc6 Vitaly Kuznetsov 2017-08-02 213 flush->flags = 0; 628f54cc6 Vitaly Kuznetsov 2017-08-02 214 } else { 628f54cc6 Vitaly Kuznetsov 2017-08-02 215 flush->address_space = 0; 628f54cc6 Vitaly Kuznetsov 2017-08-02 216 flush->flags = HV_FLUSH_ALL_VIRTUAL_ADDRESS_SPACES; 628f54cc6 Vitaly Kuznetsov 2017-08-02 217 } 628f54cc6 Vitaly Kuznetsov 2017-08-02 218 628f54cc6 Vitaly Kuznetsov 2017-08-02 219 flush->hv_vp_set.valid_bank_mask = 0; 628f54cc6 Vitaly Kuznetsov 2017-08-02 220 628f54cc6 Vitaly Kuznetsov 2017-08-02 221 if (!cpumask_equal(cpus, cpu_present_mask)) { 628f54cc6 Vitaly Kuznetsov 2017-08-02 222 flush->hv_vp_set.format = HV_GENERIC_SET_SPARCE_4K; 628f54cc6 Vitaly Kuznetsov 2017-08-02 223 nr_bank = cpumask_to_vp_set(flush, cpus); 628f54cc6 Vitaly Kuznetsov 2017-08-02 224 } 628f54cc6 Vitaly Kuznetsov 2017-08-02 225 628f54cc6 Vitaly Kuznetsov 2017-08-02 226 if (!nr_bank) { 628f54cc6 Vitaly Kuznetsov 2017-08-02 227 flush->hv_vp_set.format = HV_GENERIC_SET_ALL; 628f54cc6 Vitaly Kuznetsov 2017-08-02 228 flush->flags |= HV_FLUSH_ALL_PROCESSORS; 628f54cc6 Vitaly Kuznetsov 2017-08-02 229 } 628f54cc6 Vitaly Kuznetsov 2017-08-02 230 628f54cc6 Vitaly Kuznetsov 2017-08-02 231 /* 628f54cc6 Vitaly Kuznetsov 2017-08-02 232 * We can flush not more than max_gvas with one hypercall. Flush the 628f54cc6 Vitaly Kuznetsov 2017-08-02 233 * whole address space if we were asked to do more. 628f54cc6 Vitaly Kuznetsov 2017-08-02 234 */ 628f54cc6 Vitaly Kuznetsov 2017-08-02 235 max_gvas = 628f54cc6 Vitaly Kuznetsov 2017-08-02 236 (PAGE_SIZE - sizeof(*flush) - nr_bank * 628f54cc6 Vitaly Kuznetsov 2017-08-02 237 sizeof(flush->hv_vp_set.bank_contents[0])) / 628f54cc6 Vitaly Kuznetsov 2017-08-02 238 sizeof(flush->gva_list[0]); 628f54cc6 Vitaly Kuznetsov 2017-08-02 239 628f54cc6 Vitaly Kuznetsov 2017-08-02 240 if (info->end == TLB_FLUSH_ALL) { 628f54cc6 Vitaly Kuznetsov 2017-08-02 241 flush->flags |= HV_FLUSH_NON_GLOBAL_MAPPINGS_ONLY; 628f54cc6 Vitaly Kuznetsov 2017-08-02 242 status = hv_do_rep_hypercall( 628f54cc6 Vitaly Kuznetsov 2017-08-02 243 HVCALL_FLUSH_VIRTUAL_ADDRESS_SPACE_EX, ab7ff471a Marcelo Henrique Cerri 2017-10-05 244 0, nr_bank, flush, NULL); 628f54cc6 Vitaly Kuznetsov 2017-08-02 245 } else if (info->end && 628f54cc6 Vitaly Kuznetsov 2017-08-02 246 ((info->end - info->start)/HV_TLB_FLUSH_UNIT) > max_gvas) { 628f54cc6 Vitaly Kuznetsov 2017-08-02 247 status = hv_do_rep_hypercall( 628f54cc6 Vitaly Kuznetsov 2017-08-02 248 HVCALL_FLUSH_VIRTUAL_ADDRESS_SPACE_EX, ab7ff471a Marcelo Henrique Cerri 2017-10-05 249 0, nr_bank, flush, NULL); 628f54cc6 Vitaly Kuznetsov 2017-08-02 250 } else { 628f54cc6 Vitaly Kuznetsov 2017-08-02 251 gva_n = fill_gva_list(flush->gva_list, nr_bank, 628f54cc6 Vitaly Kuznetsov 2017-08-02 252 info->start, info->end); 628f54cc6 Vitaly Kuznetsov 2017-08-02 253 status = hv_do_rep_hypercall( 628f54cc6 Vitaly Kuznetsov 2017-08-02 254 HVCALL_FLUSH_VIRTUAL_ADDRESS_LIST_EX, ab7ff471a Marcelo Henrique Cerri 2017-10-05 255 gva_n, nr_bank, flush, NULL); 628f54cc6 Vitaly Kuznetsov 2017-08-02 256 } 628f54cc6 Vitaly Kuznetsov 2017-08-02 257 628f54cc6 Vitaly Kuznetsov 2017-08-02 258 local_irq_restore(flags); 628f54cc6 Vitaly Kuznetsov 2017-08-02 259 628f54cc6 Vitaly Kuznetsov 2017-08-02 260 if (!(status & HV_HYPERCALL_RESULT_MASK)) 628f54cc6 Vitaly Kuznetsov 2017-08-02 261 return; 628f54cc6 Vitaly Kuznetsov 2017-08-02 262 do_native: 628f54cc6 Vitaly Kuznetsov 2017-08-02 263 native_flush_tlb_others(cpus, info); 628f54cc6 Vitaly Kuznetsov 2017-08-02 264 } 628f54cc6 Vitaly Kuznetsov 2017-08-02 265 2ffd9e33c Vitaly Kuznetsov 2017-08-02 266 void hyperv_setup_mmu_ops(void) 2ffd9e33c Vitaly Kuznetsov 2017-08-02 267 { 628f54cc6 Vitaly Kuznetsov 2017-08-02 268 if (!(ms_hyperv.hints & HV_X64_REMOTE_TLB_FLUSH_RECOMMENDED)) 628f54cc6 Vitaly Kuznetsov 2017-08-02 269 return; 628f54cc6 Vitaly Kuznetsov 2017-08-02 270 628f54cc6 Vitaly Kuznetsov 2017-08-02 271 if (!(ms_hyperv.hints & HV_X64_EX_PROCESSOR_MASKS_RECOMMENDED)) { 2ffd9e33c Vitaly Kuznetsov 2017-08-02 272 pr_info("Using hypercall for remote TLB flush\n"); 2ffd9e33c Vitaly Kuznetsov 2017-08-02 273 pv_mmu_ops.flush_tlb_others = hyperv_flush_tlb_others; 628f54cc6 Vitaly Kuznetsov 2017-08-02 274 } else { 628f54cc6 Vitaly Kuznetsov 2017-08-02 275 pr_info("Using ext hypercall for remote TLB flush\n"); 628f54cc6 Vitaly Kuznetsov 2017-08-02 276 pv_mmu_ops.flush_tlb_others = hyperv_flush_tlb_others_ex; 2ffd9e33c Vitaly Kuznetsov 2017-08-02 277 } 2ffd9e33c Vitaly Kuznetsov 2017-08-02 278 } 2ffd9e33c Vitaly Kuznetsov 2017-08-02 279 2ffd9e33c Vitaly Kuznetsov 2017-08-02 280 void hyper_alloc_mmu(void) 2ffd9e33c Vitaly Kuznetsov 2017-08-02 281 { 628f54cc6 Vitaly Kuznetsov 2017-08-02 282 if (!(ms_hyperv.hints & HV_X64_REMOTE_TLB_FLUSH_RECOMMENDED)) 628f54cc6 Vitaly Kuznetsov 2017-08-02 283 return; 628f54cc6 Vitaly Kuznetsov 2017-08-02 284 628f54cc6 Vitaly Kuznetsov 2017-08-02 285 if (!(ms_hyperv.hints & HV_X64_EX_PROCESSOR_MASKS_RECOMMENDED)) 84d437db6 Vitaly Kuznetsov 2018-04-11 @286 pcpu_flush = alloc_percpu(struct hv_tlb_flush *); 628f54cc6 Vitaly Kuznetsov 2017-08-02 287 else 84d437db6 Vitaly Kuznetsov 2018-04-11 @288 pcpu_flush_ex = alloc_percpu(struct hv_tlb_flush_ex *); :::::: The code at line 107 was first introduced by commit :::::: 60d73a7c96601434dfdb56d5b9167ff3b850d8d7 x86/hyperv: Don't use percpu areas for pcpu_flush/pcpu_flush_ex structures :::::: TO: Vitaly Kuznetsov <vkuznets@xxxxxxxxxx> :::::: CC: Ingo Molnar <mingo@xxxxxxxxxx> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
