[weiny2:ackerley-1g-master 24/75] arch/powerpc/kvm/../../../virt/kvm/guest_memfd.c:431:30: error: 'GUEST_MEMFD_MAGIC' undeclared

[weiny2:ackerley-1g-master 24/75] arch/powerpc/kvm/../../../virt/kvm/guest_memfd.c:431:30: error: 'GUEST_MEMFD_MAGIC' undeclared

[kernel test robot]

tree:   https://github.com/weiny2/linux-kernel.git ackerley-1g-master
head:   773f26b5bef6e4d3094a33605165a5c6ab9aa0f0
commit: 907fd36df148056d5eaa45850e722970a33fc7ec [24/75] KVM: guest_memfd: Make guest mem use guest mem inodes instead of anonymous inodes
config: powerpc-allmodconfig (https://download.01.org/0day-ci/archive/20250519/202505192226.USrgNsjs-lkp@intel.com/config)
compiler: powerpc64-linux-gcc (GCC) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250519/202505192226.USrgNsjs-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/oe-kbuild-all/202505192226.USrgNsjs-lkp@intel.com/

All errors (new ones prefixed by >>):

   arch/powerpc/kvm/../../../virt/kvm/guest_memfd.c: In function 'kvm_gmem_init_fs_context':
>> arch/powerpc/kvm/../../../virt/kvm/guest_memfd.c:431:30: error: 'GUEST_MEMFD_MAGIC' undeclared (first use in this function)
     431 |         if (!init_pseudo(fc, GUEST_MEMFD_MAGIC))
         |                              ^~~~~~~~~~~~~~~~~
   arch/powerpc/kvm/../../../virt/kvm/guest_memfd.c:431:30: note: each undeclared identifier is reported only once for each function it appears in
   arch/powerpc/kvm/../../../virt/kvm/guest_memfd.c: In function 'kvm_gmem_create':
   arch/powerpc/kvm/../../../virt/kvm/guest_memfd.c:654:13: error: implicit declaration of function 'kvm_arch_vm_supports_gmem_shared_mem' [-Wimplicit-function-declaration]
     654 |         if (kvm_arch_vm_supports_gmem_shared_mem(kvm))
         |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


vim +/GUEST_MEMFD_MAGIC +431 arch/powerpc/kvm/../../../virt/kvm/guest_memfd.c

   426	
   427	static int kvm_gmem_init_fs_context(struct fs_context *fc)
   428	{
   429		struct pseudo_fs_context *ctx;
   430	
 > 431		if (!init_pseudo(fc, GUEST_MEMFD_MAGIC))
   432			return -ENOMEM;
   433	
   434		ctx = fc->fs_private;
   435		ctx->ops = &kvm_gmem_super_operations;
   436	
   437		return 0;
   438	}
   439	

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