Messages in this thread | | | Date | Sat, 3 Jul 2021 07:26:27 +0800 | From | kernel test robot <> | Subject | [joro:sev-es-kexec 8/12] arch/x86/kernel/sev.c:699:17: warning: no previous prototype for 'sev_jumptable_ap_park' |
| |
tree: https://git.kernel.org/pub/scm/linux/kernel/git/joro/linux.git sev-es-kexec head: 3467dc3cdbe65c619cd9b5c8db47da63b0655300 commit: 700d0a170431bd18f1f3e1d10befe530bce97567 [8/12] x86/sev: Park APs on AP Jump Table with GHCB protocol version 2 config: x86_64-allyesconfig (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://git.kernel.org/pub/scm/linux/kernel/git/joro/linux.git/commit/?id=700d0a170431bd18f1f3e1d10befe530bce97567 git remote add joro https://git.kernel.org/pub/scm/linux/kernel/git/joro/linux.git git fetch --no-tags joro sev-es-kexec git checkout 700d0a170431bd18f1f3e1d10befe530bce97567 # save the attached .config to linux build tree make W=1 ARCH=x86_64
If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
>> arch/x86/kernel/sev.c:699:17: warning: no previous prototype for 'sev_jumptable_ap_park' [-Wmissing-prototypes] 699 | void __noreturn sev_jumptable_ap_park(void) | ^~~~~~~~~~~~~~~~~~~~~ arch/x86/kernel/sev.c:794:13: warning: no previous prototype for 'sev_es_setup_ap_jump_table_data' [-Wmissing-prototypes] 794 | void __init sev_es_setup_ap_jump_table_data(void *base, u32 pa) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
vim +/sev_jumptable_ap_park +699 arch/x86/kernel/sev.c
697 698 #ifdef CONFIG_HOTPLUG_CPU > 699 void __noreturn sev_jumptable_ap_park(void) 700 { 701 local_irq_disable(); 702 703 write_cr3(real_mode_header->trampoline_pgd); 704 705 /* Exiting long mode will fail if CR4.PCIDE is set. */ 706 if (boot_cpu_has(X86_FEATURE_PCID)) 707 cr4_clear_bits(X86_CR4_PCIDE); 708 709 asm volatile("xorq %%r15, %%r15\n" 710 "xorq %%r14, %%r14\n" 711 "xorq %%r13, %%r13\n" 712 "xorq %%r12, %%r12\n" 713 "xorq %%r11, %%r11\n" 714 "xorq %%r10, %%r10\n" 715 "xorq %%r9, %%r9\n" 716 "xorq %%r8, %%r8\n" 717 "xorq %%rsi, %%rsi\n" 718 "xorq %%rdi, %%rdi\n" 719 "xorq %%rsp, %%rsp\n" 720 "xorq %%rbp, %%rbp\n" 721 "ljmpl *%0" : : 722 "m" (real_mode_header->sev_real_ap_park_asm), 723 "b" (sev_es_jump_table_pa >> 4)); 724 unreachable(); 725 } 726 STACK_FRAME_NON_STANDARD(sev_jumptable_ap_park); 727
--- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org [unhandled content-type:application/gzip] | |