Hi Sai, Thank you for the patch! Yet something to improve: [auto build test ERROR on efi/next] [cannot apply to v4.19-rc3 next-20180910] [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/Sai-Praneeth-Prakhya/efi-Make-efi_rts_work-accessible-to-efi-page-fault-handler/20180911-142222 base: https://git.kernel.org/pub/scm/linux/kernel/git/efi/efi.git next config: i386-randconfig-s0-201836 (attached as .config) compiler: gcc-6 (Debian 6.4.0-9) 6.4.0 20171026 reproduce: # save the attached .config to linux build tree make ARCH=i386 All errors (new ones prefixed by >>): arch/x86/mm/fault.o: In function `no_context': >> arch/x86/mm/fault.c:798: undefined reference to `efi_recover_from_page_fault' vim +798 arch/x86/mm/fault.c 776 777 /* 778 * 32-bit: 779 * 780 * Valid to do another page fault here, because if this fault 781 * had been triggered by is_prefetch fixup_exception would have 782 * handled it. 783 * 784 * 64-bit: 785 * 786 * Hall of shame of CPU/BIOS bugs. 787 */ 788 if (is_prefetch(regs, error_code, address)) 789 return; 790 791 if (is_errata93(regs, address)) 792 return; 793 794 /* 795 * Buggy firmware could access regions which might page fault, try to 796 * recover from such faults. 797 */ > 798 if (efi_recover_from_page_fault(address)) 799 return; 800 801 /* 802 * Oops. The kernel tried to access some bad page. We'll have to 803 * terminate things with extreme prejudice: 804 */ 805 flags = oops_begin(); 806 807 show_fault_oops(regs, error_code, address); 808 809 if (task_stack_end_corrupted(tsk)) 810 printk(KERN_EMERG "Thread overran stack, or stack corrupted\n"); 811 812 tsk->thread.cr2 = address; 813 tsk->thread.trap_nr = X86_TRAP_PF; 814 tsk->thread.error_code = error_code; 815 816 sig = SIGKILL; 817 if (__die("Oops", regs, error_code)) 818 sig = 0; 819 820 /* Executive summary in case the body of the oops scrolled away */ 821 printk(KERN_DEFAULT "CR2: %016lx\n", address); 822 823 oops_end(flags, regs, sig); 824 } 825 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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