Hi Dongjiu,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on arm64/for-next/core]
[also build test ERROR on v4.14-rc7 next-20171103]
[if your patch is applied to the wrong git tree, please drop us a note to help 
improve the system]

url:    
https://github.com/0day-ci/linux/commits/Dongjiu-Geng/arm64-add-a-macro-for-SError-synchronization/20171104-224216
base:   https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git 
for-next/core
config: arm64-allmodconfig (attached as .config)
compiler: aarch64-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705
reproduce:
        wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=arm64 

All errors (new ones prefixed by >>):

   arch/arm64/kvm/hyp/entry.S: Assembler messages:
>> arch/arm64/kvm/hyp/entry.S:88: Error: selected processor does not support 
>> `esb'
--
   arch/arm64/kvm/hyp/hyp-entry.S: Assembler messages:
>> arch/arm64/kvm/hyp/hyp-entry.S:57: Error: selected processor does not 
>> support `esb'

vim +88 arch/arm64/kvm/hyp/entry.S

    51  
    52  /*
    53   * u64 __guest_enter(struct kvm_vcpu *vcpu,
    54   *                   struct kvm_cpu_context *host_ctxt);
    55   */
    56  ENTRY(__guest_enter)
    57          // x0: vcpu
    58          // x1: host context
    59          // x2-x17: clobbered by macros
    60          // x18: guest context
    61  
    62          // Store the host regs
    63          save_callee_saved_regs x1
    64  
    65          // Store the host_ctxt for use at exit time
    66          str     x1, [sp, #-16]!
    67  
    68          add     x18, x0, #VCPU_CONTEXT
    69  
    70          // Restore guest regs x0-x17
    71          ldp     x0, x1,   [x18, #CPU_XREG_OFFSET(0)]
    72          ldp     x2, x3,   [x18, #CPU_XREG_OFFSET(2)]
    73          ldp     x4, x5,   [x18, #CPU_XREG_OFFSET(4)]
    74          ldp     x6, x7,   [x18, #CPU_XREG_OFFSET(6)]
    75          ldp     x8, x9,   [x18, #CPU_XREG_OFFSET(8)]
    76          ldp     x10, x11, [x18, #CPU_XREG_OFFSET(10)]
    77          ldp     x12, x13, [x18, #CPU_XREG_OFFSET(12)]
    78          ldp     x14, x15, [x18, #CPU_XREG_OFFSET(14)]
    79          ldp     x16, x17, [x18, #CPU_XREG_OFFSET(16)]
    80  
    81          // Restore guest regs x19-x29, lr
    82          restore_callee_saved_regs x18
    83  
    84          // Restore guest reg x18
    85          ldr     x18,      [x18, #CPU_XREG_OFFSET(18)]
    86  
    87          // synchronize host pending asynchronous error
  > 88          error_synchronize
    89          // Do not touch any register after this!
    90          eret
    91  ENDPROC(__guest_enter)
    92  

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

Attachment: .config.gz
Description: application/gzip

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