From: kbuild test robot <lkp@intel.com>
To: weiqi <weiqi4@huawei.com>
Cc: kbuild-all@lists.01.org, alexander.h.duyck@linux.intel.com,
alex.williamson@redhat.com, kvm@vger.kernel.org,
linux-kernel@vger.kernel.org, pbonzini@redhat.com,
x86@kernel.org, wei qi <weiqi4@huawei.com>
Subject: Re: [PATCH 2/2] KVM: add support for page hinting
Date: Tue, 18 Feb 2020 19:45:46 +0800 [thread overview]
Message-ID: <202002181951.gpLa20LD%lkp@intel.com> (raw)
In-Reply-To: <1578408399-20092-3-git-send-email-weiqi4@huawei.com>
[-- Attachment #1: Type: text/plain, Size: 3281 bytes --]
Hi weiqi,
Thank you for the patch! Yet something to improve:
[auto build test ERROR on kvm/linux-next]
[also build test ERROR on vfio/next vhost/linux-next]
[cannot apply to v5.6-rc2 next-20200217]
[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/weiqi/page-hinting-add-passthrough-support/20200108-152941
base: https://git.kernel.org/pub/scm/virt/kvm/kvm.git linux-next
config: x86_64-lkp (attached as .config)
compiler: gcc-7 (Debian 7.5.0-3) 7.5.0
reproduce:
# save the attached .config to linux build tree
make ARCH=x86_64
If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@intel.com>
All errors (new ones prefixed by >>):
ld: arch/x86/kvm/x86.o: in function `kvm_vfio_ummap_range':
>> arch/x86/kvm/x86.c:4880: undefined reference to `vfio_dma_find'
>> ld: arch/x86/kvm/x86.c:4889: undefined reference to `vfio_munmap_pages'
ld: arch/x86/kvm/mmu/mmu.o: in function `kvm_vfio_mmap_range':
>> arch/x86/kvm/mmu/mmu.c:4302: undefined reference to `vfio_dma_find'
>> ld: arch/x86/kvm/mmu/mmu.c:4321: undefined reference to `vfio_mmap_pages'
vim +4880 arch/x86/kvm/x86.c
4838
4839 #include <linux/vfio.h>
4840 static void kvm_vfio_ummap_range(struct kvm *kvm, struct kvm_device *tmp,
4841 gfn_t gfn, int npages, unsigned long hva)
4842 {
4843 struct kvm_vfio *kv = tmp->private;
4844 struct kvm_vfio_group *kvg;
4845
4846 list_for_each_entry(kvg, &kv->group_list, node) {
4847 struct vfio_group *group = kvg->vfio_group;
4848 struct vfio_device *it, *device = NULL;
4849
4850 list_for_each_entry(it, &group->device_list, group_next) {
4851 unsigned long page_size, page_size_base;
4852 unsigned long addr;
4853 int size;
4854 unsigned long old_pfn = 0;
4855 int ret = 0;
4856 size_t unmapped = npages;
4857 gfn_t iova_gfn = gfn;
4858 unsigned long iova_hva = hva;
4859
4860 device = it;
4861 while (unmapped) {
4862 addr = gfn_to_hva(kvm, iova_gfn);
4863 page_size_base = page_size =
4864 kvm_host_page_size(kvm,
4865 iova_gfn);
4866
4867 if (addr != iova_hva)
4868 return;
4869
4870 while ((iova_gfn << PAGE_SHIFT) &
4871 (page_size - 1))
4872 page_size >>= 1;
4873
4874 while (addr & (page_size - 1))
4875 page_size >>= 1;
4876
4877 if (page_size_base != page_size)
4878 return;
4879
> 4880 size = vfio_dma_find(device->dev, iova_gfn,
4881 page_size >> PAGE_SHIFT,
4882 &old_pfn);
4883 if (!size)
4884 return;
4885
4886 if (!old_pfn)
4887 return;
4888
> 4889 ret = vfio_munmap_pages(device->dev,
4890 iova_gfn, page_size);
4891 unmapped -= page_size >> PAGE_SHIFT;
4892 iova_hva += page_size;
4893 iova_gfn += page_size >> PAGE_SHIFT;
4894 }
4895 }
4896 }
4897 }
4898
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
[-- Attachment #2: .config.gz --]
[-- Type: application/gzip, Size: 28600 bytes --]
next prev parent reply other threads:[~2020-02-18 11:46 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-07 14:46 [PATCH 0/2] page hinting add passthrough support weiqi
2020-01-07 14:46 ` [PATCH 1/2] vfio: add mmap/munmap API for page hinting weiqi
2020-01-07 15:22 ` Alex Williamson
2020-01-10 18:10 ` kbuild test robot
2020-01-10 18:10 ` [RFC PATCH] vfio: vfio_iommu_iova_to_phys() can be static kbuild test robot
2020-01-07 14:46 ` [PATCH 2/2] KVM: add support for page hinting weiqi
2020-02-18 11:45 ` kbuild test robot [this message]
2020-01-07 16:37 ` [PATCH 0/2] page hinting add passthrough support Alexander Duyck
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=202002181951.gpLa20LD%lkp@intel.com \
--to=lkp@intel.com \
--cc=alex.williamson@redhat.com \
--cc=alexander.h.duyck@linux.intel.com \
--cc=kbuild-all@lists.01.org \
--cc=kvm@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=pbonzini@redhat.com \
--cc=weiqi4@huawei.com \
--cc=x86@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).