Hi Nitesh, Thank you for the patch! Yet something to improve: [auto build test ERROR on kvm/linux-next] [also build test ERROR on v4.15-rc1 next-20171128] [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/nilal-redhat-com/KVM-Guest-page-hinting/20171129-180331 base: https://git.kernel.org/pub/scm/virt/kvm/kvm.git linux-next config: s390-allyesconfig (attached as .config) compiler: s390x-linux-gnu-gcc (Debian 7.2.0-11) 7.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree make.cross ARCH=s390 All errors (new ones prefixed by >>): In file included from include/linux/mm.h:10:0, from include/linux/kvm_host.h:17, from arch/s390/kernel/asm-offsets.c:11: >> include/linux/gfp.h:446:20: error: static declaration of 'arch_alloc_page' follows non-static declaration static inline void arch_alloc_page(struct page *page, int order) ^~~~~~~~~~~~~~~ In file included from arch/s390/include/asm/thread_info.h:24:0, from include/linux/thread_info.h:38, from arch/s390/include/asm/preempt.h:6, from include/linux/preempt.h:81, from include/linux/hardirq.h:5, from include/linux/kvm_host.h:10, from arch/s390/kernel/asm-offsets.c:11: arch/s390/include/asm/page.h:140:6: note: previous declaration of 'arch_alloc_page' was here void arch_alloc_page(struct page *page, int order); ^~~~~~~~~~~~~~~ In file included from include/linux/mm.h:10:0, from include/linux/kvm_host.h:17, from arch/s390/kernel/asm-offsets.c:11: include/linux/gfp.h:453:20: error: static declaration of 'arch_free_page' follows non-static declaration static inline void arch_free_page(struct page *page, int order) ^~~~~~~~~~~~~~ In file included from arch/s390/include/asm/thread_info.h:24:0, from include/linux/thread_info.h:38, from arch/s390/include/asm/preempt.h:6, from include/linux/preempt.h:81, from include/linux/hardirq.h:5, from include/linux/kvm_host.h:10, from arch/s390/kernel/asm-offsets.c:11: arch/s390/include/asm/page.h:139:6: note: previous declaration of 'arch_free_page' was here void arch_free_page(struct page *page, int order); ^~~~~~~~~~~~~~ make[2]: *** [arch/s390/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 +/arch_alloc_page +446 include/linux/gfp.h 442 443 #ifdef CONFIG_KVM_FREE_PAGE_HINTING 444 #define HAVE_ARCH_ALLOC_PAGE 445 #define HAVE_ARCH_FREE_PAGE > 446 static inline void arch_alloc_page(struct page *page, int order) 447 { 448 if (!static_branch_unlikely(&guest_page_hinting_key)) 449 return; 450 guest_alloc_page(page, order); 451 } 452 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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