Hi Andrew, Thank you for the patch! Yet something to improve: [auto build test ERROR on tip/auto-latest] [also build test ERROR on v4.17-rc7 next-20180601] [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/Andrew-Banman/x86-platform-uv-BAU-gracefully-disable-BAU-during-panic/20180604-005410 config: x86_64-allyesconfig (attached as .config) compiler: gcc-7 (Debian 7.3.0-16) 7.3.0 reproduce: # save the attached .config to linux build tree make ARCH=x86_64 All error/warnings (new ones prefixed by >>): In file included from arch/x86/platform/uv/tlb_uv.c:19:0: arch/x86/platform/uv/tlb_uv.c: In function 'uv_bau_crash_shutdown': >> arch/x86/platform/uv/tlb_uv.c:2211:26: error: 'uvhub' undeclared (first use in this function) for_each_possible_blade(uvhub) { ^ arch/x86/include/asm/uv/uv_hub.h:437:8: note: in definition of macro 'for_each_possible_blade' for ((bid) = 0; (bid) < uv_num_possible_blades(); (bid)++) ^~~ arch/x86/platform/uv/tlb_uv.c:2211:26: note: each undeclared identifier is reported only once for each function it appears in for_each_possible_blade(uvhub) { ^ arch/x86/include/asm/uv/uv_hub.h:437:8: note: in definition of macro 'for_each_possible_blade' for ((bid) = 0; (bid) < uv_num_possible_blades(); (bid)++) ^~~ >> arch/x86/platform/uv/tlb_uv.c:2214:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement] int pnode = uv_blade_to_pnode(uvhub); ^~~ vim +/uvhub +2211 arch/x86/platform/uv/tlb_uv.c 2200 2201 #ifdef CONFIG_KEXEC_CORE 2202 /* 2203 * Bring BAU to quiesence by disabling future broadcasts and abandoning 2204 * current broadcasts during panic. 2205 */ 2206 void uv_bau_crash_shutdown(struct pt_regs *regs) 2207 { 2208 set_bau_off(); 2209 nobau_perm = 1; 2210 > 2211 for_each_possible_blade(uvhub) { 2212 if (!uv_blade_nr_possible_cpus(uvhub)) 2213 continue; > 2214 int pnode = uv_blade_to_pnode(uvhub); 2215 /* Set STATUS registers to idle to free source cpus */ 2216 write_gmmr(pnode, UVH_LB_BAU_SB_ACTIVATION_STATUS_0, 0x0); 2217 write_gmmr(pnode, UVH_LB_BAU_SB_ACTIVATION_STATUS_1, 0x0); 2218 write_gmmr(pnode, UVH_LB_BAU_SB_ACTIVATION_STATUS_2, 0x0); 2219 /* Clear TIMEOUT and PENDING bits to free up BAU resources */ 2220 ops.write_g_sw_ack(pnode, ops.read_g_sw_ack(pnode) & 0xFFFF); 2221 } 2222 2223 native_machine_crash_shutdown(regs); 2224 } 2225 #endif 2226 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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