./include/linux/kvm_host.h:2569:23: error: 'kvm' undeclared

./include/linux/kvm_host.h:2569:23: error: 'kvm' undeclared

[kernel test robot]

:::::: 
:::::: Manual check reason: "low confidence bisect report"
:::::: 

BCC: lkp@intel.com
CC: oe-kbuild-all@lists.linux.dev
TO: Dave Jiang <dave.jiang@intel.com>
CC: 0day robot <lkp@intel.com>

tree:   https://github.com/intel-lab-lkp/linux/commits/Dave-Jiang/dax-rate-limit-dev_dax_huge_fault-output/20260424-144914
head:   f8b7f4f5432fa1c0c2c4ef2cb58a045a0d731b17
commit: acb8652cb8737cd31c16cf43a52bea1bda3cdf5e kvm: Implement dax support for KVM faulting
date:   5 hours ago
:::::: branch date: 5 hours ago
:::::: commit date: 5 hours ago
config: x86_64-allnoconfig-bpf (https://download.01.org/0day-ci/archive/20260424/202604241441.ZAS2AFOa-lkp@intel.com/config)
compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260424/202604241441.ZAS2AFOa-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/r/202604241441.ZAS2AFOa-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from ./arch/x86/include/asm/bug.h:193,
                    from ./arch/x86/include/asm/alternative.h:9,
                    from ./arch/x86/include/asm/segment.h:6,
                    from ./arch/x86/include/asm/ptrace.h:5,
                    from ./arch/x86/include/asm/math_emu.h:5,
                    from ./arch/x86/include/asm/processor.h:13,
                    from ./arch/x86/include/asm/timex.h:5,
                    from ./include/linux/timex.h:67,
                    from ./include/linux/time32.h:13,
                    from ./include/linux/time.h:60,
                    from ./include/linux/stat.h:19,
                    from ./include/linux/fs_dirent.h:5,
                    from ./include/linux/fs/super_types.h:5,
                    from ./include/linux/fs/super.h:5,
                    from ./include/linux/fs.h:5,
                    from ./include/linux/dax.h:5,
                    from mm/filemap.c:15:
   ./include/linux/kvm_host.h: In function 'kvm_dax_get_pfn':
>> ./include/linux/kvm_host.h:2569:23: error: 'kvm' undeclared (first use in this function)
    2569 |         KVM_BUG_ON(1, kvm);
         |                       ^~~
   ./include/asm-generic/bug.h:120:32: note: in definition of macro 'WARN_ON_ONCE'
     120 |         int __ret_warn_on = !!(condition);                              \
         |                                ^~~~~~~~~
   ./include/linux/kvm_host.h:2569:9: note: in expansion of macro 'KVM_BUG_ON'
    2569 |         KVM_BUG_ON(1, kvm);
         |         ^~~~~~~~~~
   ./include/linux/kvm_host.h:2569:23: note: each undeclared identifier is reported only once for each function it appears in
    2569 |         KVM_BUG_ON(1, kvm);
         |                       ^~~
   ./include/asm-generic/bug.h:120:32: note: in definition of macro 'WARN_ON_ONCE'
     120 |         int __ret_warn_on = !!(condition);                              \
         |                                ^~~~~~~~~
   ./include/linux/kvm_host.h:2569:9: note: in expansion of macro 'KVM_BUG_ON'
    2569 |         KVM_BUG_ON(1, kvm);
         |         ^~~~~~~~~~


vim +/kvm +2569 ./include/linux/kvm_host.h

5a475554db1e47 Chao Peng           2023-10-27  2550  
19a9a1ab5c3dce Fuad Tabba          2025-07-29  2551  #ifdef CONFIG_KVM_GUEST_MEMFD
a7800aa80ea4d5 Sean Christopherson 2023-11-13  2552  int kvm_gmem_get_pfn(struct kvm *kvm, struct kvm_memory_slot *slot,
1fbee5b01a0fd2 Sean Christopherson 2024-10-10  2553  		     gfn_t gfn, kvm_pfn_t *pfn, struct page **page,
1fbee5b01a0fd2 Sean Christopherson 2024-10-10  2554  		     int *max_order);
acb8652cb8737c Dave Jiang          2026-04-23  2555  int kvm_dax_get_pfn(struct kvm_memory_slot *slot, pgoff_t index, kvm_pfn_t *pfn,
acb8652cb8737c Dave Jiang          2026-04-23  2556  		    struct page **refcounted_page);
a7800aa80ea4d5 Sean Christopherson 2023-11-13  2557  #else
a7800aa80ea4d5 Sean Christopherson 2023-11-13  2558  static inline int kvm_gmem_get_pfn(struct kvm *kvm,
a7800aa80ea4d5 Sean Christopherson 2023-11-13  2559  				   struct kvm_memory_slot *slot, gfn_t gfn,
1fbee5b01a0fd2 Sean Christopherson 2024-10-10  2560  				   kvm_pfn_t *pfn, struct page **page,
1fbee5b01a0fd2 Sean Christopherson 2024-10-10  2561  				   int *max_order)
a7800aa80ea4d5 Sean Christopherson 2023-11-13  2562  {
a7800aa80ea4d5 Sean Christopherson 2023-11-13  2563  	KVM_BUG_ON(1, kvm);
a7800aa80ea4d5 Sean Christopherson 2023-11-13  2564  	return -EIO;
a7800aa80ea4d5 Sean Christopherson 2023-11-13  2565  }
acb8652cb8737c Dave Jiang          2026-04-23  2566  static inline int kvm_dax_get_pfn(struct kvm_memory_slot *slot, gfn_t gfn,
acb8652cb8737c Dave Jiang          2026-04-23  2567  				  kvm_pfn_t *pfn)
acb8652cb8737c Dave Jiang          2026-04-23  2568  {
acb8652cb8737c Dave Jiang          2026-04-23 @2569  	KVM_BUG_ON(1, kvm);
acb8652cb8737c Dave Jiang          2026-04-23  2570  	return -EIO;
acb8652cb8737c Dave Jiang          2026-04-23  2571  }
19a9a1ab5c3dce Fuad Tabba          2025-07-29  2572  #endif /* CONFIG_KVM_GUEST_MEMFD */
a7800aa80ea4d5 Sean Christopherson 2023-11-13  2573  

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