Hi Aneesh, I love your patch! Yet something to improve: [auto build test ERROR on linus/master] [also build test ERROR on v4.20-rc5 next-20181206] [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/Aneesh-Kumar-K-V/NestMMU-pte-upgrade-workaround-for-mprotect/20181207-040417 config: x86_64-allmodconfig (attached as .config) compiler: gcc-7 (Debian 7.3.0-1) 7.3.0 reproduce: # save the attached .config to linux build tree make ARCH=x86_64 All errors (new ones prefixed by >>): In file included from arch/x86/include/asm/msr.h:246:0, from arch/x86/include/asm/processor.h:21, from arch/x86/include/asm/cpufeature.h:8, from arch/x86/include/asm/thread_info.h:53, from include/linux/thread_info.h:38, from arch/x86/include/asm/preempt.h:7, from include/linux/preempt.h:81, from include/linux/spinlock.h:51, from include/linux/mmzone.h:8, from include/linux/gfp.h:6, from include/linux/slab.h:15, from include/linux/crypto.h:24, from arch/x86/kernel/asm-offsets.c:9: arch/x86/include/asm/paravirt.h: In function 'ptep_modify_prot_start': >> arch/x86/include/asm/paravirt.h:424:28: error: dereferencing pointer to incomplete type 'struct vm_area_struct' struct mm_struct *mm = vma->vm_mm; ^~ make[2]: *** [arch/x86/kernel/asm-offsets.s] Error 1 make[2]: Target '__build' not remade because of errors. make[1]: *** [prepare0] Error 2 make[1]: Target 'prepare' not remade because of errors. make: *** [sub-make] Error 2 vim +424 arch/x86/include/asm/paravirt.h 418 419 #define __HAVE_ARCH_PTEP_MODIFY_PROT_TRANSACTION 420 static inline pte_t ptep_modify_prot_start(struct vm_area_struct *vma, unsigned long addr, 421 pte_t *ptep) 422 { 423 pteval_t ret; > 424 struct mm_struct *mm = vma->vm_mm; 425 426 ret = PVOP_CALL3(pteval_t, mmu.ptep_modify_prot_start, mm, addr, ptep); 427 428 return (pte_t) { .pte = ret }; 429 } 430 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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