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* [kvm:queue 4/24] arch/x86/kvm/vmx/vmenter.S:98: Error: invalid operands (*UND* and *ABS* sections) for `*'
@ 2026-05-14  3:20 kernel test robot
  2026-05-14  9:25 ` Paolo Bonzini
  0 siblings, 1 reply; 2+ messages in thread
From: kernel test robot @ 2026-05-14  3:20 UTC (permalink / raw)
  To: Chang S. Bae; +Cc: oe-kbuild-all, kvm, Farrah Chen, Paolo Bonzini

Hi Chang,

FYI, the error/warning was bisected to this commit, please ignore it if it's irrelevant.

tree:   https://git.kernel.org/pub/scm/virt/kvm/kvm.git queue
head:   2b5e4245e1d31fd0858bb7abbd82af85a6457c33
commit: d1d1534a7ef4694a6a7b079c80e661dd66d04e9c [4/24] KVM: VMX: Macrofy GPR swapping in __vmx_vcpu_run()
config: i386-buildonly-randconfig-001-20260514 (https://download.01.org/0day-ci/archive/20260514/202605141102.53Vk824r-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/20260514/202605141102.53Vk824r-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/202605141102.53Vk824r-lkp@intel.com/

All errors (new ones prefixed by >>):

   arch/x86/kvm/vmx/vmenter.S: Assembler messages:
>> arch/x86/kvm/vmx/vmenter.S:98: Error: invalid operands (*UND* and *ABS* sections) for `*'
>> arch/x86/kvm/vmx/vmenter.S:98: Error: invalid operands (*UND* and *ABS* sections) for `*'
>> arch/x86/kvm/vmx/vmenter.S:98: Error: invalid operands (*UND* and *ABS* sections) for `*'
>> arch/x86/kvm/vmx/vmenter.S:98: Error: invalid operands (*UND* and *ABS* sections) for `*'
>> arch/x86/kvm/vmx/vmenter.S:98: Error: invalid operands (*UND* and *ABS* sections) for `*'
>> arch/x86/kvm/vmx/vmenter.S:98: Error: invalid operands (*UND* and *ABS* sections) for `*'
   arch/x86/kvm/vmx/vmenter.S:105: Error: invalid operands (*UND* and *ABS* sections) for `*'
   arch/x86/kvm/vmx/vmenter.S:164: Error: invalid operands (*UND* and *ABS* sections) for `*'
   arch/x86/kvm/vmx/vmenter.S:164: Error: invalid operands (*UND* and *ABS* sections) for `*'
   arch/x86/kvm/vmx/vmenter.S:164: Error: invalid operands (*UND* and *ABS* sections) for `*'
   arch/x86/kvm/vmx/vmenter.S:164: Error: invalid operands (*UND* and *ABS* sections) for `*'
   arch/x86/kvm/vmx/vmenter.S:164: Error: invalid operands (*UND* and *ABS* sections) for `*'
   arch/x86/kvm/vmx/vmenter.S:164: Error: invalid operands (*UND* and *ABS* sections) for `*'
   arch/x86/kvm/vmx/vmenter.S:166: Error: invalid operands (*UND* and *ABS* sections) for `*'


vim +98 arch/x86/kvm/vmx/vmenter.S

    88	
    89		/*
    90		 * Since vmentry is serializing on affected CPUs, there's no need for
    91		 * an LFENCE to stop speculation from skipping the wrmsr.
    92		 */
    93	
    94		/*
    95		 * Load guest registers.  Don't clobber flags. Intentionally omit
    96		 * %_ASM_SP as it's context switched by hardware
    97		 */
  > 98		LOAD_REGS %_ASM_DI, VMX_vcpu_arch_regs, \
    99			  %_ASM_AX, %_ASM_CX, %_ASM_DX, %_ASM_BX, %_ASM_BP, %_ASM_SI
   100	#ifdef CONFIG_X86_64
   101		LOAD_REGS %_ASM_DI, VMX_vcpu_arch_regs, \
   102			  %r8, %r9, %r10, %r11, %r12, %r13, %r14, %r15
   103	#endif
   104		/* Load guest RDI.  This kills the @vmx pointer! */
   105		LOAD_REGS %_ASM_DI, VMX_vcpu_arch_regs, %_ASM_DI
   106	
   107		/*
   108		 * Note, ALTERNATIVE_2 works in reverse order.  If CLEAR_CPU_BUF_VM is
   109		 * enabled, do VERW unconditionally.  If CPU_BUF_VM_MMIO is enabled,
   110		 * check @flags to see if the vCPU has access to host MMIO, and if so,
   111		 * do VERW.  Else, do nothing (no mitigations needed/enabled).
   112		 */
   113		ALTERNATIVE_2 "",									  \
   114			      __stringify(testl $KVM_ENTER_CLEAR_CPU_BUFFERS_FOR_MMIO, (%_ASM_SP);	  \
   115					  jz .Lskip_mmio_verw;						  \
   116					  VERW;								  \
   117					  .Lskip_mmio_verw:),					  	  \
   118			      X86_FEATURE_CLEAR_CPU_BUF_VM_MMIO,					  \
   119			      __stringify(VERW), X86_FEATURE_CLEAR_CPU_BUF_VM
   120	
   121		/* Check @flags to see if VMLAUNCH or VMRESUME is needed. */
   122		testl $KVM_ENTER_VMRESUME, (%_ASM_SP)
   123		jz .Lvmlaunch
   124	
   125		/*
   126		 * After a successful VMRESUME/VMLAUNCH, control flow "magically"
   127		 * resumes below at 'vmx_vmexit' due to the VMCS HOST_RIP setting.
   128		 * So this isn't a typical function and objtool needs to be told to
   129		 * save the unwind state here and restore it below.
   130		 */
   131		UNWIND_HINT_SAVE
   132	

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

^ permalink raw reply	[flat|nested] 2+ messages in thread
end of thread, other threads:[~2026-05-14  9:25 UTC | newest]

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2026-05-14  3:20 [kvm:queue 4/24] arch/x86/kvm/vmx/vmenter.S:98: Error: invalid operands (*UND* and *ABS* sections) for `*' kernel test robot
2026-05-14  9:25 ` Paolo Bonzini

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