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Wed, 16 Mar 2022 19:48:43 +0000 Date: Thu, 17 Mar 2022 03:47:49 +0800 From: kernel test robot To: Anup Patel Cc: llvm@lists.linux.dev, kbuild-all@lists.01.org, linux-kernel@vger.kernel.org Subject: [avpatel:riscv_kvm_aia_v1 32/38] arch/arm64/kvm/mmu.c:768:55: warning: incompatible pointer to integer conversion initializing 'gfp_t' (aka 'unsigned int') with an expression of type 'void *' Message-ID: <202203170328.blnyldnz-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.10.1 (2018-07-13) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org tree: https://github.com/avpatel/linux.git riscv_kvm_aia_v1 head: 1f93371b93e3d215381b1ebcecacb9f2e54b270f commit: ef83a194815d993203e117d8a83e591f0a0c288e [32/38] RISC-V: KVM: Add G-stage ioremap() and iounmap() functions config: arm64-randconfig-r013-20220314 (https://download.01.org/0day-ci/archive/20220317/202203170328.blnyldnz-lkp@intel.com/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project a6ec1e3d798f8eab43fb3a91028c6ab04e115fcb) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # install arm64 cross compiling tool for clang build # apt-get install binutils-aarch64-linux-gnu # https://github.com/avpatel/linux/commit/ef83a194815d993203e117d8a83e591f0a0c288e git remote add avpatel https://github.com/avpatel/linux.git git fetch --no-tags avpatel riscv_kvm_aia_v1 git checkout ef83a194815d993203e117d8a83e591f0a0c288e # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash arch/arm64/kvm/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All warnings (new ones prefixed by >>): >> arch/arm64/kvm/mmu.c:768:55: warning: incompatible pointer to integer conversion initializing 'gfp_t' (aka 'unsigned int') with an expression of type 'void *' [-Wint-conversion] struct kvm_mmu_memory_cache cache = { 0, __GFP_ZERO, NULL, }; ^~~~ include/linux/stddef.h:8:14: note: expanded from macro 'NULL' #define NULL ((void *)0) ^~~~~~~~~~~ 1 warning generated. vim +768 arch/arm64/kvm/mmu.c d5d8184d35c990b arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 753 d5d8184d35c990b arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 754 /** d5d8184d35c990b arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 755 * kvm_phys_addr_ioremap - map a device range to guest IPA d5d8184d35c990b arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 756 * d5d8184d35c990b arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 757 * @kvm: The KVM pointer d5d8184d35c990b arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 758 * @guest_ipa: The IPA at which to insert the mapping d5d8184d35c990b arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 759 * @pa: The physical address of the device d5d8184d35c990b arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 760 * @size: The size of the mapping c9c0279cc02b4e1 arch/arm64/kvm/mmu.c Xiaofei Tan 2020-09-17 761 * @writable: Whether or not to create a writable mapping d5d8184d35c990b arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 762 */ d5d8184d35c990b arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 763 int kvm_phys_addr_ioremap(struct kvm *kvm, phys_addr_t guest_ipa, c40f2f8ff833edd arch/arm/kvm/mmu.c Ard Biesheuvel 2014-09-17 764 phys_addr_t pa, unsigned long size, bool writable) d5d8184d35c990b arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 765 { 02bbd374ce4a8aa arch/arm64/kvm/mmu.c Will Deacon 2020-09-11 766 phys_addr_t addr; d5d8184d35c990b arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 767 int ret = 0; c1a33aebe91d49c arch/arm64/kvm/mmu.c Sean Christopherson 2020-07-02 @768 struct kvm_mmu_memory_cache cache = { 0, __GFP_ZERO, NULL, }; 02bbd374ce4a8aa arch/arm64/kvm/mmu.c Will Deacon 2020-09-11 769 struct kvm_pgtable *pgt = kvm->arch.mmu.pgt; 02bbd374ce4a8aa arch/arm64/kvm/mmu.c Will Deacon 2020-09-11 770 enum kvm_pgtable_prot prot = KVM_PGTABLE_PROT_DEVICE | 02bbd374ce4a8aa arch/arm64/kvm/mmu.c Will Deacon 2020-09-11 771 KVM_PGTABLE_PROT_R | 02bbd374ce4a8aa arch/arm64/kvm/mmu.c Will Deacon 2020-09-11 772 (writable ? KVM_PGTABLE_PROT_W : 0); d5d8184d35c990b arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 773 bff01cb6b1bf680 arch/arm64/kvm/mmu.c Quentin Perret 2021-12-08 774 if (is_protected_kvm_enabled()) bff01cb6b1bf680 arch/arm64/kvm/mmu.c Quentin Perret 2021-12-08 775 return -EPERM; bff01cb6b1bf680 arch/arm64/kvm/mmu.c Quentin Perret 2021-12-08 776 02bbd374ce4a8aa arch/arm64/kvm/mmu.c Will Deacon 2020-09-11 777 size += offset_in_page(guest_ipa); 02bbd374ce4a8aa arch/arm64/kvm/mmu.c Will Deacon 2020-09-11 778 guest_ipa &= PAGE_MASK; c40f2f8ff833edd arch/arm/kvm/mmu.c Ard Biesheuvel 2014-09-17 779 02bbd374ce4a8aa arch/arm64/kvm/mmu.c Will Deacon 2020-09-11 780 for (addr = guest_ipa; addr < guest_ipa + size; addr += PAGE_SIZE) { c1a33aebe91d49c arch/arm64/kvm/mmu.c Sean Christopherson 2020-07-02 781 ret = kvm_mmu_topup_memory_cache(&cache, 61ffb3a50c4402e arch/arm64/kvm/mmu.c Sean Christopherson 2020-07-02 782 kvm_mmu_cache_min_pages(kvm)); d5d8184d35c990b arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 783 if (ret) 02bbd374ce4a8aa arch/arm64/kvm/mmu.c Will Deacon 2020-09-11 784 break; 02bbd374ce4a8aa arch/arm64/kvm/mmu.c Will Deacon 2020-09-11 785 d5d8184d35c990b arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 786 spin_lock(&kvm->mmu_lock); 02bbd374ce4a8aa arch/arm64/kvm/mmu.c Will Deacon 2020-09-11 787 ret = kvm_pgtable_stage2_map(pgt, addr, PAGE_SIZE, pa, prot, 02bbd374ce4a8aa arch/arm64/kvm/mmu.c Will Deacon 2020-09-11 788 &cache); d5d8184d35c990b arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 789 spin_unlock(&kvm->mmu_lock); d5d8184d35c990b arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 790 if (ret) 02bbd374ce4a8aa arch/arm64/kvm/mmu.c Will Deacon 2020-09-11 791 break; d5d8184d35c990b arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 792 02bbd374ce4a8aa arch/arm64/kvm/mmu.c Will Deacon 2020-09-11 793 pa += PAGE_SIZE; d5d8184d35c990b arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 794 } d5d8184d35c990b arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 795 c1a33aebe91d49c arch/arm64/kvm/mmu.c Sean Christopherson 2020-07-02 796 kvm_mmu_free_memory_cache(&cache); d5d8184d35c990b arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 797 return ret; d5d8184d35c990b arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 798 } d5d8184d35c990b arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 799 :::::: The code at line 768 was first introduced by commit :::::: c1a33aebe91d49c958df1648b2a84db96c403075 KVM: arm64: Use common KVM implementation of MMU memory caches :::::: TO: Sean Christopherson :::::: CC: Paolo Bonzini --- 0-DAY CI Kernel Test Service https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org