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Message-ID: <202203170328.blnyldnz-lkp@intel.com>
Date: Thu, 17 Mar 2022 03:47:49 +0800
From: kernel test robot <lkp@...el.com>
To: Anup Patel <apatel@...tanamicro.com>
Cc: llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
linux-kernel@...r.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 *'
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 <lkp@...el.com>
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 <sean.j.christopherson@...el.com>
:::::: CC: Paolo Bonzini <pbonzini@...hat.com>
---
0-DAY CI Kernel Test Service
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