Re: [PATCH 14/32] KVM: arm64: gic-v5: Implement GICv5 load/put and save/restore

[kernel test robot <lkp@intel.com>]

Hi Sascha,

kernel test robot noticed the following build errors:

[auto build test ERROR on linus/master]
[also build test ERROR on next-20251212]
[cannot apply to kvmarm/next arm64/for-next/core kvm/queue kvm/next kvm/linux-next v6.18]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Sascha-Bischoff/KVM-arm64-Account-for-RES1-bits-in-DECLARE_FEAT_MAP-and-co/20251212-233140
base:   linus/master
patch link:    https://lore.kernel.org/r/20251212152215.675767-15-sascha.bischoff%40arm.com
patch subject: [PATCH 14/32] KVM: arm64: gic-v5: Implement GICv5 load/put and save/restore
config: arm64-randconfig-002-20251213 (https://download.01.org/0day-ci/archive/20251213/202512131539.zPrweF7e-lkp@intel.com/config)
compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project 1335a05ab8bc8339ce24be3a9da89d8c3f4e0571)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251213/202512131539.zPrweF7e-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/202512131539.zPrweF7e-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from arch/arm64/kernel/asm-offsets.c:16:
   In file included from include/linux/kvm_host.h:45:
   In file included from arch/arm64/include/asm/kvm_host.h:36:
>> include/kvm/arm_vgic.h:392:19: error: field has incomplete type 'struct gicv5_vpe'
     392 |         struct gicv5_vpe gicv5_vpe;
         |                          ^
   include/kvm/arm_vgic.h:392:9: note: forward declaration of 'struct gicv5_vpe'
     392 |         struct gicv5_vpe gicv5_vpe;
         |                ^
   1 error generated.
   make[3]: *** [scripts/Makefile.build:182: arch/arm64/kernel/asm-offsets.s] Error 1 shuffle=1891526797
   make[3]: Target 'prepare' not remade because of errors.
   make[2]: *** [Makefile:1314: prepare0] Error 2 shuffle=1891526797
   make[2]: Target 'prepare' not remade because of errors.
   make[1]: *** [Makefile:248: __sub-make] Error 2 shuffle=1891526797
   make[1]: Target 'prepare' not remade because of errors.
   make: *** [Makefile:248: __sub-make] Error 2 shuffle=1891526797
   make: Target 'prepare' not remade because of errors.

Kconfig warnings: (for reference only)
   WARNING: unmet direct dependencies detected for CAN_DEV
   Depends on [n]: NETDEVICES [=n] && CAN [=y]
   Selected by [y]:
   - CAN [=y] && NET [=y]


vim +392 include/kvm/arm_vgic.h

   360	
   361	struct vgic_v5_cpu_if {
   362		u64	vgic_apr;
   363		u64	vgic_vmcr;
   364	
   365		/* PPI register state */
   366		u64	vgic_ppi_hmr[2];
   367		u64	vgic_ppi_dvir[2];
   368		u64	vgic_ppi_priorityr[16];
   369	
   370		/* The pending state of the guest. This is merged with the exit state */
   371		u64	vgic_ppi_pendr[2];
   372	
   373		/* The state flushed to the regs when entering the guest */
   374		u64	vgic_ppi_activer_entry[2];
   375		u64	vgic_ich_ppi_enabler_entry[2];
   376		u64	vgic_ppi_pendr_entry[2];
   377	
   378		/* The saved state of the regs when leaving the guest */
   379		u64	vgic_ppi_activer_exit[2];
   380		u64	vgic_ich_ppi_enabler_exit[2];
   381		u64	vgic_ppi_pendr_exit[2];
   382	
   383		/*
   384		 * The ICSR is re-used across host and guest, and hence it needs to be
   385		 * saved/restored. Only one copy is required as the host should block
   386		 * preemption between executing GIC CDRCFG and acccessing the
   387		 * ICC_ICSR_EL1. A guest, of course, can never guarantee this, and hence
   388		 * it is the hyp's responsibility to keep the state constistent.
   389		 */
   390		u64	vgic_icsr;
   391	
 > 392		struct gicv5_vpe gicv5_vpe;
   393	};
   394	

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