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Subject[intel-tdx:kvm-upstream-workaround 422/422] arch/x86/kvm/mmu/mmu.c:4546:13: error: implicit declaration of function 'get_user_page_fast'; did you mean 'get_user_pages_fast'?
tree:   https://github.com/intel/tdx.git kvm-upstream-workaround
head: 4e487b52e144ed36e4ae202e7103e63679710095
commit: 4e487b52e144ed36e4ae202e7103e63679710095 [422/422] KVM: x86/mmu: Use get_user_page_fast instead of get_user_page_fast_only
config: i386-randconfig-a003 (https://download.01.org/0day-ci/archive/20220601/202206011134.9CrAT8m1-lkp@intel.com/config)
compiler: gcc-11 (Debian 11.3.0-1) 11.3.0
reproduce (this is a W=1 build):
# https://github.com/intel/tdx/commit/4e487b52e144ed36e4ae202e7103e63679710095
git remote add intel-tdx https://github.com/intel/tdx.git
git fetch --no-tags intel-tdx kvm-upstream-workaround
git checkout 4e487b52e144ed36e4ae202e7103e63679710095
# save the config file
mkdir build_dir && cp config build_dir/.config
make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash arch/x86/kvm/

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

In file included from include/linux/kvm_host.h:47,
from arch/x86/kvm/irq.h:15,
from arch/x86/kvm/mmu/mmu.c:18:
include/linux/memfile_notifier.h:87:57: error: unknown type name 'flags'
87 | static int memfile_register_notifier(struct file *file, flags,
| ^~~~~
arch/x86/kvm/mmu/mmu.c: In function 'kvm_faultin_pfn_private_mapped':
>> arch/x86/kvm/mmu/mmu.c:4546:13: error: implicit declaration of function 'get_user_page_fast'; did you mean 'get_user_pages_fast'? [-Werror=implicit-function-declaration]
4546 | if (get_user_page_fast(hva, FOLL_WRITE, page))
| ^~~~~~~~~~~~~~~~~~
| get_user_pages_fast
In file included from include/linux/kvm_host.h:47,
from arch/x86/kvm/irq.h:15,
from arch/x86/kvm/mmu/mmu.c:18:
At top level:
include/linux/memfile_notifier.h:93:13: warning: 'memfile_unregister_notifier' defined but not used [-Wunused-function]
93 | static void memfile_unregister_notifier(struct memfile_notifier *notifier)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/memfile_notifier.h:82:13: warning: 'memfile_notifier_invalidate' defined but not used [-Wunused-function]
82 | static void memfile_notifier_invalidate(struct memfile_node *node,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/memfile_notifier.h:77:13: warning: 'memfile_notifier_populate' defined but not used [-Wunused-function]
77 | static void memfile_notifier_populate(struct memfile_node *node,
| ^~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/memfile_notifier.h:72:12: warning: 'memfile_node_set_flags' defined but not used [-Wunused-function]
72 | static int memfile_node_set_flags(struct file *file, unsigned long flags)
| ^~~~~~~~~~~~~~~~~~~~~~
include/linux/memfile_notifier.h:68:13: warning: 'memfile_register_backing_store' defined but not used [-Wunused-function]
68 | static void memfile_register_backing_store(struct memfile_backing_store *bs)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
cc1: some warnings being treated as errors


vim +4546 arch/x86/kvm/mmu/mmu.c

4527
4528 /*
4529 * Private page can't be release on mmu_notifier without losing page contents.
4530 * The help, callback, from backing store is needed to allow page migration.
4531 * For now, pin the page.
4532 */
4533 static int kvm_faultin_pfn_private_mapped(struct kvm_vcpu *vcpu,
4534 struct kvm_page_fault *fault)
4535 {
4536 hva_t hva = gfn_to_hva_memslot(fault->slot, fault->gfn);
4537 struct page *page[1];
4538
4539 fault->map_writable = false;
4540 fault->pfn = KVM_PFN_ERR_FAULT;
4541 if (hva == KVM_HVA_ERR_RO_BAD || hva == KVM_HVA_ERR_BAD)
4542 return RET_PF_INVALID;
4543
4544 /* TDX allows only RWX. Read-only isn't supported. */
4545 WARN_ON_ONCE(!fault->write);
> 4546 if (get_user_page_fast(hva, FOLL_WRITE, page))
4547 return RET_PF_INVALID;
4548
4549 fault->map_writable = true;
4550 fault->pfn = page_to_pfn(page[0]);
4551 return RET_PF_CONTINUE;
4552 }
4553

--
0-DAY CI Kernel Test Service
https://01.org/lkp

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