[PATCH 05/33] KVM: arm64: GICv3: Detect and work around the lack of ICV_DIR_EL1 trapping

[kernel test robot]

Hi Marc,

kernel test robot noticed the following build errors:

[auto build test ERROR on kvmarm/next]
[also build test ERROR on linus/master v6.18-rc4 next-20251104]
[cannot apply to arm64/for-next/core tip/irq/core]
[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/Marc-Zyngier/irqchip-gic-Add-missing-GICH_HCR-control-bits/20251104-011133
base:   https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git next
patch link:    https://lore.kernel.org/r/20251103165517.2960148-6-maz%40kernel.org
patch subject: [PATCH 05/33] KVM: arm64: GICv3: Detect and work around the lack of ICV_DIR_EL1 trapping
config: arm64-randconfig-003-20251105 (https://download.01.org/0day-ci/archive/20251105/202511050925.kQxVnIUB-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 8.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251105/202511050925.kQxVnIUB-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 at intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202511050925.kQxVnIUB-lkp@intel.com/

All errors (new ones prefixed by >>):

   arch/arm64/kernel/hyp-stub.S: Assembler messages:
>> arch/arm64/kernel/hyp-stub.S:59: Error: unknown or missing system register name at operand 2 -- `mrs x1,ich_vtr_el2'


vim +59 arch/arm64/kernel/hyp-stub.S

    45	
    46		.align 11
    47	
    48	SYM_CODE_START_LOCAL(elx_sync)
    49		cmp	x0, #HVC_SET_VECTORS
    50		b.ne	1f
    51		msr	vbar_el2, x1
    52		b	9f
    53	
    54	1:	cmp	x0, #HVC_FINALISE_EL2
    55		b.eq	__finalise_el2
    56	
    57		cmp	x0, #HVC_GET_ICH_VTR_EL2
    58		b.ne	2f
  > 59		mrs	x1, ich_vtr_el2
    60		b	9f
    61	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki