[kvm:queue 5/24] arch/x86/kvm/svm/vmenter.S:95: Error: invalid operands (*UND* and *ABS* sections) for `*'

[kvm:queue 5/24] arch/x86/kvm/svm/vmenter.S:95: Error: invalid operands (*UND* and *ABS* sections) for `*'

[kernel test robot]

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: 6dec918c1fc7766e505e4ac5cdbbc28a0cc73819 [5/24] KVM: SVM: Macrofy GPR swapping in __svm_vcpu_run()
config: i386-randconfig-r062-20260514 (https://download.01.org/0day-ci/archive/20260514/202605141116.deKGCTHy-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/20260514/202605141116.deKGCTHy-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/202605141116.deKGCTHy-lkp@intel.com/

All errors (new ones prefixed by >>):

   arch/x86/kvm/svm/vmenter.S: Assembler messages:
>> arch/x86/kvm/svm/vmenter.S:95: Error: invalid operands (*UND* and *ABS* sections) for `*'
>> arch/x86/kvm/svm/vmenter.S:95: Error: invalid operands (*UND* and *ABS* sections) for `*'
>> arch/x86/kvm/svm/vmenter.S:95: Error: invalid operands (*UND* and *ABS* sections) for `*'
>> arch/x86/kvm/svm/vmenter.S:95: Error: invalid operands (*UND* and *ABS* sections) for `*'
>> arch/x86/kvm/svm/vmenter.S:95: Error: invalid operands (*UND* and *ABS* sections) for `*'
   arch/x86/kvm/svm/vmenter.S:101: Error: invalid operands (*UND* and *ABS* sections) for `*'
   arch/x86/kvm/svm/vmenter.S:116: Error: invalid operands (*UND* and *ABS* sections) for `*'
   arch/x86/kvm/svm/vmenter.S:116: Error: invalid operands (*UND* and *ABS* sections) for `*'
   arch/x86/kvm/svm/vmenter.S:116: Error: invalid operands (*UND* and *ABS* sections) for `*'
   arch/x86/kvm/svm/vmenter.S:116: Error: invalid operands (*UND* and *ABS* sections) for `*'
   arch/x86/kvm/svm/vmenter.S:116: Error: invalid operands (*UND* and *ABS* sections) for `*'
   arch/x86/kvm/svm/vmenter.S:116: Error: invalid operands (*UND* and *ABS* sections) for `*'

Kconfig warnings: (for reference only)
   WARNING: unmet direct dependencies detected for MFD_STMFX
   Depends on [n]: HAS_IOMEM [=y] && I2C [=y] && OF [=n]
   Selected by [y]:
   - PINCTRL_STMFX [=y] && PINCTRL [=y] && I2C [=y] && HAS_IOMEM [=y]


vim +95 arch/x86/kvm/svm/vmenter.S

    72	
    73		/* Clobbers RAX, RCX, RDX (and ESI on 32-bit), consumes RDI (@svm). */
    74		RESTORE_GUEST_SPEC_CTRL
    75	801:
    76	
    77		/*
    78		 * Use a single vmcb (vmcb01 because it's always valid) for
    79		 * context switching guest state via VMLOAD/VMSAVE, that way
    80		 * the state doesn't need to be copied between vmcb01 and
    81		 * vmcb02 when switching vmcbs for nested virtualization.
    82		 */
    83		mov SVM_vmcb01_pa(%_ASM_DI), %_ASM_AX
    84	1:	vmload %_ASM_AX
    85	2:
    86	
    87		/* Get svm->current_vmcb->pa into RAX. */
    88		mov SVM_current_vmcb(%_ASM_DI), %_ASM_AX
    89		mov KVM_VMCB_pa(%_ASM_AX), %_ASM_AX
    90	
    91		/*
    92		 * Load guest registers. Intentionally omit %_ASM_AX and %_ASM_SP as
    93		 * context switched by hardware
    94		 */
  > 95		LOAD_REGS %_ASM_DI, SVM_vcpu_arch_regs, \
    96			  %_ASM_CX, %_ASM_DX, %_ASM_BX, %_ASM_BP, %_ASM_SI
    97	#ifdef CONFIG_X86_64
    98		LOAD_REGS %_ASM_DI, SVM_vcpu_arch_regs, \
    99			  %r8, %r9, %r10, %r11, %r12, %r13, %r14, %r15
   100	#endif
   101		LOAD_REGS %_ASM_DI, SVM_vcpu_arch_regs, %_ASM_DI
   102	
   103		/* Clobbers EFLAGS.ZF */
   104		SVM_CLEAR_CPU_BUFFERS
   105	
   106		/* Enter guest mode */
   107	3:	vmrun %_ASM_AX
   108	4:
   109		/* Pop @svm to RAX while it's the only available register. */
   110		pop %_ASM_AX
   111	
   112		/*
   113		 * Save all guest registers. Intentionally omit %_ASM_AX and %_ASM_SP as
   114		 * context switched by hardware
   115		 */
   116		STORE_REGS %_ASM_AX, SVM_vcpu_arch_regs, \
   117			   %_ASM_CX, %_ASM_DX, %_ASM_BX, %_ASM_BP, %_ASM_SI, %_ASM_DI
   118	#ifdef CONFIG_X86_64
   119		STORE_REGS %_ASM_AX, SVM_vcpu_arch_regs, \
   120			   %r8, %r9, %r10, %r11, %r12, %r13, %r14, %r15
   121	#endif
   122	
   123		/* @svm can stay in RDI from now on.  */
   124		mov %_ASM_AX, %_ASM_DI
   125	
   126		mov SVM_vmcb01_pa(%_ASM_DI), %_ASM_AX
   127	5:	vmsave %_ASM_AX
   128	6:
   129	
   130		/* Restores GSBASE among other things, allowing access to percpu data.  */
   131		pop %_ASM_AX
   132	7:	vmload %_ASM_AX
   133	8:
   134	
   135		/* IMPORTANT: Stuff the RSB immediately after VM-Exit, before RET! */
   136		FILL_RETURN_BUFFER %_ASM_AX, RSB_CLEAR_LOOPS, X86_FEATURE_RSB_VMEXIT
   137	
   138		/*
   139		 * Clobbers RAX, RCX, RDX (and ESI, EDI on 32-bit), consumes RDI (@svm)
   140		 * and RSP (pointer to @spec_ctrl_intercepted).
   141		 */
   142		RESTORE_HOST_SPEC_CTRL
   143	901:
   144	
   145		/*
   146		 * Mitigate RETBleed for AMD/Hygon Zen uarch. RET should be
   147		 * untrained as soon as we exit the VM and are back to the
   148		 * kernel. This should be done before re-enabling interrupts
   149		 * because interrupt handlers won't sanitize 'ret' if the return is
   150		 * from the kernel.
   151		 */
   152		UNTRAIN_RET_VM
   153	
   154		/*
   155		 * Clear all general purpose registers except RSP and RAX to prevent
   156		 * speculative use of the guest's values, even those that are reloaded
   157		 * via the stack.  In theory, an L1 cache miss when restoring registers
   158		 * could lead to speculative execution with the guest's values.
   159		 * Zeroing XORs are dirt cheap, i.e. the extra paranoia is essentially
   160		 * free.  RSP and RAX are exempt as they are restored by hardware
   161		 * during VM-Exit.
   162		 */
   163		CLEAR_REGS %ecx, %edx, %ebx, %ebp, %esi, %edi
   164	#ifdef CONFIG_X86_64
   165		CLEAR_REGS %r8d, %r9d, %r10d, %r11d, %r12d, %r13d, %r14d, %r15d
   166	#endif
   167	
   168		/* "Pop" @enter_flags.  */
   169		pop %_ASM_BX
   170	
   171		pop %_ASM_BX
   172	

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https://github.com/intel/lkp-tests/wiki