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Date: Sat, 1 Jan 2022 12:39:06 +0800
From: kernel test robot <lkp@...el.com>
To: Anup Patel <anup.patel@....com>
Cc: llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
linux-kernel@...r.kernel.org
Subject: [avpatel:riscv_kvm_aia_v1 36/42] arch/arm64/kvm/mmu.c:647:55:
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: 6fa93cde61f5f84422bd3f97b9db6e2406a344dd
commit: 0ad131af9d0521a98bc38f8c5c24d36582258b09 [36/42] RISC-V: KVM: Add G-stage ioremap() and iounmap() functions
config: arm64-randconfig-r016-20211231 (https://download.01.org/0day-ci/archive/20220101/202201011247.UrnvSLfd-lkp@intel.com/config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project c054402170cd8466683a20385befc0523aba3359)
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/0ad131af9d0521a98bc38f8c5c24d36582258b09
git remote add avpatel https://github.com/avpatel/linux.git
git fetch --no-tags avpatel riscv_kvm_aia_v1
git checkout 0ad131af9d0521a98bc38f8c5c24d36582258b09
# 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:647:55: 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 +647 arch/arm64/kvm/mmu.c
d5d8184d35c990 arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 632
d5d8184d35c990 arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 633 /**
d5d8184d35c990 arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 634 * kvm_phys_addr_ioremap - map a device range to guest IPA
d5d8184d35c990 arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 635 *
d5d8184d35c990 arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 636 * @kvm: The KVM pointer
d5d8184d35c990 arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 637 * @guest_ipa: The IPA at which to insert the mapping
d5d8184d35c990 arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 638 * @pa: The physical address of the device
d5d8184d35c990 arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 639 * @size: The size of the mapping
c9c0279cc02b4e arch/arm64/kvm/mmu.c Xiaofei Tan 2020-09-17 640 * @writable: Whether or not to create a writable mapping
d5d8184d35c990 arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 641 */
d5d8184d35c990 arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 642 int kvm_phys_addr_ioremap(struct kvm *kvm, phys_addr_t guest_ipa,
c40f2f8ff833ed arch/arm/kvm/mmu.c Ard Biesheuvel 2014-09-17 643 phys_addr_t pa, unsigned long size, bool writable)
d5d8184d35c990 arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 644 {
02bbd374ce4a8a arch/arm64/kvm/mmu.c Will Deacon 2020-09-11 645 phys_addr_t addr;
d5d8184d35c990 arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 646 int ret = 0;
c1a33aebe91d49 arch/arm64/kvm/mmu.c Sean Christopherson 2020-07-02 @647 struct kvm_mmu_memory_cache cache = { 0, __GFP_ZERO, NULL, };
02bbd374ce4a8a arch/arm64/kvm/mmu.c Will Deacon 2020-09-11 648 struct kvm_pgtable *pgt = kvm->arch.mmu.pgt;
02bbd374ce4a8a arch/arm64/kvm/mmu.c Will Deacon 2020-09-11 649 enum kvm_pgtable_prot prot = KVM_PGTABLE_PROT_DEVICE |
02bbd374ce4a8a arch/arm64/kvm/mmu.c Will Deacon 2020-09-11 650 KVM_PGTABLE_PROT_R |
02bbd374ce4a8a arch/arm64/kvm/mmu.c Will Deacon 2020-09-11 651 (writable ? KVM_PGTABLE_PROT_W : 0);
d5d8184d35c990 arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 652
02bbd374ce4a8a arch/arm64/kvm/mmu.c Will Deacon 2020-09-11 653 size += offset_in_page(guest_ipa);
02bbd374ce4a8a arch/arm64/kvm/mmu.c Will Deacon 2020-09-11 654 guest_ipa &= PAGE_MASK;
c40f2f8ff833ed arch/arm/kvm/mmu.c Ard Biesheuvel 2014-09-17 655
02bbd374ce4a8a arch/arm64/kvm/mmu.c Will Deacon 2020-09-11 656 for (addr = guest_ipa; addr < guest_ipa + size; addr += PAGE_SIZE) {
c1a33aebe91d49 arch/arm64/kvm/mmu.c Sean Christopherson 2020-07-02 657 ret = kvm_mmu_topup_memory_cache(&cache,
61ffb3a50c4402 arch/arm64/kvm/mmu.c Sean Christopherson 2020-07-02 658 kvm_mmu_cache_min_pages(kvm));
d5d8184d35c990 arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 659 if (ret)
02bbd374ce4a8a arch/arm64/kvm/mmu.c Will Deacon 2020-09-11 660 break;
02bbd374ce4a8a arch/arm64/kvm/mmu.c Will Deacon 2020-09-11 661
d5d8184d35c990 arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 662 spin_lock(&kvm->mmu_lock);
02bbd374ce4a8a arch/arm64/kvm/mmu.c Will Deacon 2020-09-11 663 ret = kvm_pgtable_stage2_map(pgt, addr, PAGE_SIZE, pa, prot,
02bbd374ce4a8a arch/arm64/kvm/mmu.c Will Deacon 2020-09-11 664 &cache);
d5d8184d35c990 arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 665 spin_unlock(&kvm->mmu_lock);
d5d8184d35c990 arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 666 if (ret)
02bbd374ce4a8a arch/arm64/kvm/mmu.c Will Deacon 2020-09-11 667 break;
d5d8184d35c990 arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 668
02bbd374ce4a8a arch/arm64/kvm/mmu.c Will Deacon 2020-09-11 669 pa += PAGE_SIZE;
d5d8184d35c990 arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 670 }
d5d8184d35c990 arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 671
c1a33aebe91d49 arch/arm64/kvm/mmu.c Sean Christopherson 2020-07-02 672 kvm_mmu_free_memory_cache(&cache);
d5d8184d35c990 arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 673 return ret;
d5d8184d35c990 arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 674 }
d5d8184d35c990 arch/arm/kvm/mmu.c Christoffer Dall 2013-01-20 675
:::::: The code at line 647 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, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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