From: kbuild test robot <lkp@intel.com>
To: Anastassios Nanos <ananos@nubificus.co.uk>,
kvm@vger.kernel.org, kvmarm@lists.cs.columbia.edu,
linux-kernel@vger.kernel.org
Cc: kbuild-all@lists.01.org, Marc Zyngier <maz@kernel.org>,
Sean Christopherson <sean.j.christopherson@intel.com>,
clang-built-linux@googlegroups.com,
Catalin Marinas <catalin.marinas@arm.com>,
Paolo Bonzini <pbonzini@redhat.com>,
Vitaly Kuznetsov <vkuznets@redhat.com>,
Will Deacon <will@kernel.org>
Subject: Re: [PATCH 2/2] KVMM: Memory and interface related changes
Date: Mon, 18 May 2020 17:28:28 +0800 [thread overview]
Message-ID: <202005181715.sBuoDe5R%lkp@intel.com> (raw)
In-Reply-To: <63cf223058e7963891dcfb8cf0c5ccfe31548712.1589784221.git.ananos@nubificus.co.uk>
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Hi Anastassios,
Thank you for the patch! Yet something to improve:
[auto build test ERROR on v5.7-rc6]
[cannot apply to kvm/linux-next kvmarm/next tip/x86/core next-20200515]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]
url: https://github.com/0day-ci/linux/commits/Anastassios-Nanos/Expose-KVM-API-to-Linux-Kernel/20200518-150402
base: b9bbe6ed63b2b9f2c9ee5cbd0f2c946a2723f4ce
config: x86_64-randconfig-r006-20200518 (attached as .config)
compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project 135b877874fae96b4372c8a3fbfaa8ff44ff86e3)
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install x86_64 cross compiling tool for clang build
# apt-get install binutils-x86-64-linux-gnu
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64
If you fix the issue, kindly add following tag as appropriate
Reported-by: kbuild test robot <lkp@intel.com>
All errors (new ones prefixed by >>, old ones prefixed by <<):
>> arch/x86/kvm/../../../virt/kvm/kvm_main.c:1837:4: error: use of undeclared identifier 'npages_local'
npages_local = 1;
^
1 error generated.
vim +/npages_local +1837 arch/x86/kvm/../../../virt/kvm/kvm_main.c
1800
1801 /*
1802 * The slow path to get the pfn of the specified host virtual address,
1803 * 1 indicates success, -errno is returned if error is detected.
1804 */
1805 static int hva_to_pfn_slow(unsigned long addr, bool *async, bool write_fault,
1806 bool *writable, kvm_pfn_t *pfn)
1807 {
1808 unsigned int flags = FOLL_HWPOISON;
1809 struct page *page;
1810 int npages = 0;
1811
1812 might_sleep();
1813
1814 if (writable)
1815 *writable = write_fault;
1816
1817 if (write_fault)
1818 flags |= FOLL_WRITE;
1819 if (async)
1820 flags |= FOLL_NOWAIT;
1821
1822 if (kvmm_valid_addr(addr)) {
1823 npages = 1;
1824 page = vmalloc_to_page((void *)addr);
1825 } else {
1826 npages = get_user_pages_unlocked(addr, 1, &page, flags);
1827 }
1828 if (npages != 1)
1829 return npages;
1830
1831 /* map read fault as writable if possible */
1832 if (unlikely(!write_fault) && writable) {
1833 struct page *wpage;
1834 int lnpages = 0;
1835
1836 if (kvmm_valid_addr(addr)) {
> 1837 npages_local = 1;
1838 wpage = vmalloc_to_page((void *)addr);
1839 } else {
1840 lnpages = __get_user_pages_fast(addr, 1, 1, &wpage);
1841 }
1842
1843 if (lnpages == 1) {
1844 *writable = true;
1845 put_page(page);
1846 page = wpage;
1847 }
1848 }
1849 *pfn = page_to_pfn(page);
1850 return npages;
1851 }
1852
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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next prev parent reply other threads:[~2020-05-18 9:29 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-18 6:58 [PATCH 0/2] Expose KVM API to Linux Kernel Anastassios Nanos
2020-05-18 6:58 ` [PATCH 1/2] KVMM: export needed symbols Anastassios Nanos
2020-05-18 7:41 ` Marc Zyngier
2020-05-18 7:01 ` [PATCH 2/2] KVMM: Memory and interface related changes Anastassios Nanos
2020-05-18 6:59 ` Anastassios Nanos
2020-05-18 9:13 ` kbuild test robot
2020-05-18 9:28 ` kbuild test robot [this message]
2020-05-18 10:16 ` kbuild test robot
2020-05-18 7:50 ` [PATCH 0/2] Expose KVM API to Linux Kernel Marc Zyngier
[not found] ` <CALRTab90UyMq2hMxCdCmC3GwPWFn2tK_uKMYQP2YBRcHwzkEUQ@mail.gmail.com>
2020-05-18 11:18 ` Paolo Bonzini
2020-05-18 11:34 ` Maxim Levitsky
2020-05-18 11:51 ` Paolo Bonzini
2020-05-18 12:12 ` Maxim Levitsky
2020-05-18 20:45 ` Andy Lutomirski
2020-05-18 8:42 ` Thomas Gleixner
[not found] ` <CALRTab-mEYtRG4zQbSGoAri+jg8xNL-imODv=MWE330Hkt_t+Q@mail.gmail.com>
2020-05-18 9:18 ` Vitaly Kuznetsov
2020-05-18 9:38 ` Thomas Gleixner
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