Hi Ben, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on kvm/queue] [also build test WARNING on tip/master linus/master next-20210506] [cannot apply to linux/master v5.12] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Ben-Gardon/Lazily-allocate-memslot-rmaps/20210507-024533 base: https://git.kernel.org/pub/scm/virt/kvm/kvm.git queue config: x86_64-randconfig-s021-20210506 (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.3-341-g8af24329-dirty # https://github.com/0day-ci/linux/commit/dd56af97c1d2b22f9acd46d33c83ac5e7bf67acc git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Ben-Gardon/Lazily-allocate-memslot-rmaps/20210507-024533 git checkout dd56af97c1d2b22f9acd46d33c83ac5e7bf67acc # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' W=1 ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> sparse warnings: (new ones prefixed by >>) >> arch/x86/kvm/mmu/mmu.c:938:16: sparse: sparse: incompatible types in comparison expression (different address spaces): >> arch/x86/kvm/mmu/mmu.c:938:16: sparse: struct kvm_rmap_head [noderef] __rcu * >> arch/x86/kvm/mmu/mmu.c:938:16: sparse: struct kvm_rmap_head * arch/x86/kvm/mmu/mmu.c: note: in included file (through include/linux/kvm_host.h, arch/x86/kvm/irq.h): arch/x86/include/asm/kvm_host.h:1871:36: sparse: sparse: marked inline, but without a definition arch/x86/include/asm/kvm_host.h:1871:36: sparse: sparse: marked inline, but without a definition arch/x86/include/asm/kvm_host.h:1871:36: sparse: sparse: marked inline, but without a definition arch/x86/include/asm/kvm_host.h:1871:36: sparse: sparse: marked inline, but without a definition arch/x86/include/asm/kvm_host.h:1871:36: sparse: sparse: marked inline, but without a definition arch/x86/include/asm/kvm_host.h:1871:36: sparse: sparse: marked inline, but without a definition arch/x86/include/asm/kvm_host.h:1871:36: sparse: sparse: marked inline, but without a definition arch/x86/include/asm/kvm_host.h:1871:36: sparse: sparse: marked inline, but without a definition arch/x86/include/asm/kvm_host.h:1871:36: sparse: sparse: marked inline, but without a definition arch/x86/include/asm/kvm_host.h:1871:36: sparse: sparse: marked inline, but without a definition arch/x86/include/asm/kvm_host.h:1871:36: sparse: sparse: marked inline, but without a definition arch/x86/include/asm/kvm_host.h:1871:36: sparse: sparse: marked inline, but without a definition arch/x86/include/asm/kvm_host.h:1871:36: sparse: sparse: marked inline, but without a definition -- arch/x86/kvm/x86.c:10926:17: sparse: sparse: incompatible types in comparison expression (different address spaces): >> arch/x86/kvm/x86.c:10926:17: sparse: struct kvm_rmap_head [noderef] __rcu * >> arch/x86/kvm/x86.c:10926:17: sparse: struct kvm_rmap_head * arch/x86/kvm/x86.c: note: in included file (through include/linux/notifier.h, include/linux/memory_hotplug.h, include/linux/mmzone.h, ...): include/linux/srcu.h:182:9: sparse: sparse: context imbalance in 'vcpu_enter_guest' - unexpected unlock vim +938 arch/x86/kvm/mmu/mmu.c 929 930 static struct kvm_rmap_head *__gfn_to_rmap(struct kvm *kvm, gfn_t gfn, 931 int level, 932 struct kvm_memory_slot *slot) 933 { 934 struct kvm_rmap_head *head; 935 unsigned long idx; 936 937 idx = gfn_to_index(gfn, slot->base_gfn, level); > 938 head = srcu_dereference_check(slot->arch.rmap[level - PG_LEVEL_4K], 939 &kvm->srcu, 940 lockdep_is_held(&kvm->slots_arch_lock)); 941 return &head[idx]; 942 } 943 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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