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* [linuxppc:next-test 92/92] arch/powerpc/kernel/kvm_emul.S:132: Error: non-constant expression in ".if" statement
@ 2021-08-21  3:23 kernel test robot
  0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2021-08-21  3:23 UTC (permalink / raw)
  To: Christophe Leroy; +Cc: kbuild-all, linux-kernel, Michael Ellerman

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Hi Christophe,

First bad commit (maybe != root cause):

tree:   https://github.com/linuxppc/linux next-test
head:   579a7abaf051ef84dd24cf19e6541455e7df72ce
commit: 579a7abaf051ef84dd24cf19e6541455e7df72ce [92/92] powerpc: Define and use MSR_RI only on non booke/40x
config: powerpc-randconfig-c024-20210821 (attached as .config)
compiler: powerpc64-linux-gcc (GCC) 11.2.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/linuxppc/linux/commit/579a7abaf051ef84dd24cf19e6541455e7df72ce
        git remote add linuxppc https://github.com/linuxppc/linux
        git fetch --no-tags linuxppc next-test
        git checkout 579a7abaf051ef84dd24cf19e6541455e7df72ce
        # save the attached .config to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=powerpc SHELL=/bin/bash arch/powerpc/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   arch/powerpc/kernel/kvm_emul.S: Assembler messages:
>> arch/powerpc/kernel/kvm_emul.S:132: Error: non-constant expression in ".if" statement
>> arch/powerpc/kernel/kvm_emul.S:132: Error: non-constant expression in ".if" statement
>> arch/powerpc/kernel/kvm_emul.S:59: Error: invalid operands (*ABS* and *UND* sections) for `|'
   arch/powerpc/kernel/kvm_emul.S:60: Error: invalid operands (*ABS* and *UND* sections) for `|'
   arch/powerpc/kernel/kvm_emul.S:66: Error: invalid operands (*ABS* and *UND* sections) for `|'
   arch/powerpc/kernel/kvm_emul.S:132: Error: invalid operands (*ABS* and *UND* sections) for `|'


vim +132 arch/powerpc/kernel/kvm_emul.S

92234722ed631f Alexander Graf 2010-07-29   26  
92234722ed631f Alexander Graf 2010-07-29   27  #define SCRATCH_SAVE							\
92234722ed631f Alexander Graf 2010-07-29   28  	/* Enable critical section. We are critical if			\
92234722ed631f Alexander Graf 2010-07-29   29  	   shared->critical == r1 */					\
92234722ed631f Alexander Graf 2010-07-29   30  	STL64(r1, KVM_MAGIC_PAGE + KVM_MAGIC_CRITICAL, 0);		\
92234722ed631f Alexander Graf 2010-07-29   31  									\
92234722ed631f Alexander Graf 2010-07-29   32  	/* Save state */						\
92234722ed631f Alexander Graf 2010-07-29   33  	PPC_STL	r31, (KVM_MAGIC_PAGE + KVM_MAGIC_SCRATCH1)(0);		\
92234722ed631f Alexander Graf 2010-07-29   34  	PPC_STL	r30, (KVM_MAGIC_PAGE + KVM_MAGIC_SCRATCH2)(0);		\
92234722ed631f Alexander Graf 2010-07-29   35  	mfcr	r31;							\
92234722ed631f Alexander Graf 2010-07-29   36  	stw	r31, (KVM_MAGIC_PAGE + KVM_MAGIC_SCRATCH3)(0);
92234722ed631f Alexander Graf 2010-07-29   37  
92234722ed631f Alexander Graf 2010-07-29   38  #define SCRATCH_RESTORE							\
92234722ed631f Alexander Graf 2010-07-29   39  	/* Restore state */						\
92234722ed631f Alexander Graf 2010-07-29   40  	PPC_LL	r31, (KVM_MAGIC_PAGE + KVM_MAGIC_SCRATCH1)(0);		\
92234722ed631f Alexander Graf 2010-07-29   41  	lwz	r30, (KVM_MAGIC_PAGE + KVM_MAGIC_SCRATCH3)(0);		\
92234722ed631f Alexander Graf 2010-07-29   42  	mtcr	r30;							\
92234722ed631f Alexander Graf 2010-07-29   43  	PPC_LL	r30, (KVM_MAGIC_PAGE + KVM_MAGIC_SCRATCH2)(0);		\
92234722ed631f Alexander Graf 2010-07-29   44  									\
92234722ed631f Alexander Graf 2010-07-29   45  	/* Disable critical section. We are critical if			\
92234722ed631f Alexander Graf 2010-07-29   46  	   shared->critical == r1 and r2 is always != r1 */		\
92234722ed631f Alexander Graf 2010-07-29   47  	STL64(r2, KVM_MAGIC_PAGE + KVM_MAGIC_CRITICAL, 0);
819a63dc792b08 Alexander Graf 2010-07-29   48  
befdc0a65afd17 Liu Yu-B13201  2011-12-01   49  .global kvm_template_start
befdc0a65afd17 Liu Yu-B13201  2011-12-01   50  kvm_template_start:
befdc0a65afd17 Liu Yu-B13201  2011-12-01   51  
819a63dc792b08 Alexander Graf 2010-07-29   52  .global kvm_emulate_mtmsrd
819a63dc792b08 Alexander Graf 2010-07-29   53  kvm_emulate_mtmsrd:
819a63dc792b08 Alexander Graf 2010-07-29   54  
819a63dc792b08 Alexander Graf 2010-07-29   55  	SCRATCH_SAVE
819a63dc792b08 Alexander Graf 2010-07-29   56  
819a63dc792b08 Alexander Graf 2010-07-29   57  	/* Put MSR & ~(MSR_EE|MSR_RI) in r31 */
819a63dc792b08 Alexander Graf 2010-07-29   58  	LL64(r31, KVM_MAGIC_PAGE + KVM_MAGIC_MSR, 0)
819a63dc792b08 Alexander Graf 2010-07-29  @59  	lis	r30, (~(MSR_EE | MSR_RI))@h
819a63dc792b08 Alexander Graf 2010-07-29   60  	ori	r30, r30, (~(MSR_EE | MSR_RI))@l
819a63dc792b08 Alexander Graf 2010-07-29   61  	and	r31, r31, r30
819a63dc792b08 Alexander Graf 2010-07-29   62  
819a63dc792b08 Alexander Graf 2010-07-29   63  	/* OR the register's (MSR_EE|MSR_RI) on MSR */
819a63dc792b08 Alexander Graf 2010-07-29   64  kvm_emulate_mtmsrd_reg:
df08bd10266ce6 Alexander Graf 2010-08-05   65  	ori	r30, r0, 0
df08bd10266ce6 Alexander Graf 2010-08-05   66  	andi.	r30, r30, (MSR_EE|MSR_RI)
819a63dc792b08 Alexander Graf 2010-07-29   67  	or	r31, r31, r30
819a63dc792b08 Alexander Graf 2010-07-29   68  
819a63dc792b08 Alexander Graf 2010-07-29   69  	/* Put MSR back into magic page */
819a63dc792b08 Alexander Graf 2010-07-29   70  	STL64(r31, KVM_MAGIC_PAGE + KVM_MAGIC_MSR, 0)
819a63dc792b08 Alexander Graf 2010-07-29   71  
819a63dc792b08 Alexander Graf 2010-07-29   72  	/* Check if we have to fetch an interrupt */
819a63dc792b08 Alexander Graf 2010-07-29   73  	lwz	r31, (KVM_MAGIC_PAGE + KVM_MAGIC_INT)(0)
819a63dc792b08 Alexander Graf 2010-07-29   74  	cmpwi	r31, 0
819a63dc792b08 Alexander Graf 2010-07-29   75  	beq+	no_check
819a63dc792b08 Alexander Graf 2010-07-29   76  
819a63dc792b08 Alexander Graf 2010-07-29   77  	/* Check if we may trigger an interrupt */
819a63dc792b08 Alexander Graf 2010-07-29   78  	andi.	r30, r30, MSR_EE
819a63dc792b08 Alexander Graf 2010-07-29   79  	beq	no_check
819a63dc792b08 Alexander Graf 2010-07-29   80  
819a63dc792b08 Alexander Graf 2010-07-29   81  	SCRATCH_RESTORE
819a63dc792b08 Alexander Graf 2010-07-29   82  
819a63dc792b08 Alexander Graf 2010-07-29   83  	/* Nag hypervisor */
df08bd10266ce6 Alexander Graf 2010-08-05   84  kvm_emulate_mtmsrd_orig_ins:
819a63dc792b08 Alexander Graf 2010-07-29   85  	tlbsync
819a63dc792b08 Alexander Graf 2010-07-29   86  
819a63dc792b08 Alexander Graf 2010-07-29   87  	b	kvm_emulate_mtmsrd_branch
819a63dc792b08 Alexander Graf 2010-07-29   88  
819a63dc792b08 Alexander Graf 2010-07-29   89  no_check:
819a63dc792b08 Alexander Graf 2010-07-29   90  
819a63dc792b08 Alexander Graf 2010-07-29   91  	SCRATCH_RESTORE
819a63dc792b08 Alexander Graf 2010-07-29   92  
819a63dc792b08 Alexander Graf 2010-07-29   93  	/* Go back to caller */
819a63dc792b08 Alexander Graf 2010-07-29   94  kvm_emulate_mtmsrd_branch:
819a63dc792b08 Alexander Graf 2010-07-29   95  	b	.
819a63dc792b08 Alexander Graf 2010-07-29   96  kvm_emulate_mtmsrd_end:
819a63dc792b08 Alexander Graf 2010-07-29   97  
819a63dc792b08 Alexander Graf 2010-07-29   98  .global kvm_emulate_mtmsrd_branch_offs
819a63dc792b08 Alexander Graf 2010-07-29   99  kvm_emulate_mtmsrd_branch_offs:
819a63dc792b08 Alexander Graf 2010-07-29  100  	.long (kvm_emulate_mtmsrd_branch - kvm_emulate_mtmsrd) / 4
819a63dc792b08 Alexander Graf 2010-07-29  101  
819a63dc792b08 Alexander Graf 2010-07-29  102  .global kvm_emulate_mtmsrd_reg_offs
819a63dc792b08 Alexander Graf 2010-07-29  103  kvm_emulate_mtmsrd_reg_offs:
819a63dc792b08 Alexander Graf 2010-07-29  104  	.long (kvm_emulate_mtmsrd_reg - kvm_emulate_mtmsrd) / 4
819a63dc792b08 Alexander Graf 2010-07-29  105  
df08bd10266ce6 Alexander Graf 2010-08-05  106  .global kvm_emulate_mtmsrd_orig_ins_offs
df08bd10266ce6 Alexander Graf 2010-08-05  107  kvm_emulate_mtmsrd_orig_ins_offs:
df08bd10266ce6 Alexander Graf 2010-08-05  108  	.long (kvm_emulate_mtmsrd_orig_ins - kvm_emulate_mtmsrd) / 4
df08bd10266ce6 Alexander Graf 2010-08-05  109  
819a63dc792b08 Alexander Graf 2010-07-29  110  .global kvm_emulate_mtmsrd_len
819a63dc792b08 Alexander Graf 2010-07-29  111  kvm_emulate_mtmsrd_len:
819a63dc792b08 Alexander Graf 2010-07-29  112  	.long (kvm_emulate_mtmsrd_end - kvm_emulate_mtmsrd) / 4
7810927760a0d1 Alexander Graf 2010-07-29  113  
7810927760a0d1 Alexander Graf 2010-07-29  114  
d35b1075afc017 Bharat Bhushan 2012-05-20  115  #define MSR_SAFE_BITS (MSR_EE | MSR_RI)
7810927760a0d1 Alexander Graf 2010-07-29  116  #define MSR_CRITICAL_BITS ~MSR_SAFE_BITS
7810927760a0d1 Alexander Graf 2010-07-29  117  
7810927760a0d1 Alexander Graf 2010-07-29  118  .global kvm_emulate_mtmsr
7810927760a0d1 Alexander Graf 2010-07-29  119  kvm_emulate_mtmsr:
7810927760a0d1 Alexander Graf 2010-07-29  120  
7810927760a0d1 Alexander Graf 2010-07-29  121  	SCRATCH_SAVE
7810927760a0d1 Alexander Graf 2010-07-29  122  
7810927760a0d1 Alexander Graf 2010-07-29  123  	/* Fetch old MSR in r31 */
7810927760a0d1 Alexander Graf 2010-07-29  124  	LL64(r31, KVM_MAGIC_PAGE + KVM_MAGIC_MSR, 0)
7810927760a0d1 Alexander Graf 2010-07-29  125  
7810927760a0d1 Alexander Graf 2010-07-29  126  	/* Find the changed bits between old and new MSR */
7810927760a0d1 Alexander Graf 2010-07-29  127  kvm_emulate_mtmsr_reg1:
512ba59ed9c580 Alexander Graf 2010-08-05  128  	ori	r30, r0, 0
512ba59ed9c580 Alexander Graf 2010-08-05  129  	xor	r31, r30, r31
7810927760a0d1 Alexander Graf 2010-07-29  130  
7810927760a0d1 Alexander Graf 2010-07-29  131  	/* Check if we need to really do mtmsr */
7810927760a0d1 Alexander Graf 2010-07-29 @132  	LOAD_REG_IMMEDIATE(r30, MSR_CRITICAL_BITS)
7810927760a0d1 Alexander Graf 2010-07-29  133  	and.	r31, r31, r30
7810927760a0d1 Alexander Graf 2010-07-29  134  
7810927760a0d1 Alexander Graf 2010-07-29  135  	/* No critical bits changed? Maybe we can stay in the guest. */
7810927760a0d1 Alexander Graf 2010-07-29  136  	beq	maybe_stay_in_guest
7810927760a0d1 Alexander Graf 2010-07-29  137  
7810927760a0d1 Alexander Graf 2010-07-29  138  do_mtmsr:
7810927760a0d1 Alexander Graf 2010-07-29  139  
7810927760a0d1 Alexander Graf 2010-07-29  140  	SCRATCH_RESTORE
7810927760a0d1 Alexander Graf 2010-07-29  141  
7810927760a0d1 Alexander Graf 2010-07-29  142  	/* Just fire off the mtmsr if it's critical */
7810927760a0d1 Alexander Graf 2010-07-29  143  kvm_emulate_mtmsr_orig_ins:
7810927760a0d1 Alexander Graf 2010-07-29  144  	mtmsr	r0
7810927760a0d1 Alexander Graf 2010-07-29  145  
7810927760a0d1 Alexander Graf 2010-07-29  146  	b	kvm_emulate_mtmsr_branch
7810927760a0d1 Alexander Graf 2010-07-29  147  
7810927760a0d1 Alexander Graf 2010-07-29  148  maybe_stay_in_guest:
7810927760a0d1 Alexander Graf 2010-07-29  149  
512ba59ed9c580 Alexander Graf 2010-08-05  150  	/* Get the target register in r30 */
512ba59ed9c580 Alexander Graf 2010-08-05  151  kvm_emulate_mtmsr_reg2:
512ba59ed9c580 Alexander Graf 2010-08-05  152  	ori	r30, r0, 0
512ba59ed9c580 Alexander Graf 2010-08-05  153  
f9208427f72e6c Bharat Bhushan 2011-10-13  154  	/* Put MSR into magic page because we don't call mtmsr */
f9208427f72e6c Bharat Bhushan 2011-10-13  155  	STL64(r30, KVM_MAGIC_PAGE + KVM_MAGIC_MSR, 0)
f9208427f72e6c Bharat Bhushan 2011-10-13  156  
7810927760a0d1 Alexander Graf 2010-07-29  157  	/* Check if we have to fetch an interrupt */
7810927760a0d1 Alexander Graf 2010-07-29  158  	lwz	r31, (KVM_MAGIC_PAGE + KVM_MAGIC_INT)(0)
7810927760a0d1 Alexander Graf 2010-07-29  159  	cmpwi	r31, 0
7810927760a0d1 Alexander Graf 2010-07-29  160  	beq+	no_mtmsr
7810927760a0d1 Alexander Graf 2010-07-29  161  
7810927760a0d1 Alexander Graf 2010-07-29  162  	/* Check if we may trigger an interrupt */
512ba59ed9c580 Alexander Graf 2010-08-05  163  	andi.	r31, r30, MSR_EE
f9208427f72e6c Bharat Bhushan 2011-10-13  164  	bne	do_mtmsr
7810927760a0d1 Alexander Graf 2010-07-29  165  
7810927760a0d1 Alexander Graf 2010-07-29  166  no_mtmsr:
7810927760a0d1 Alexander Graf 2010-07-29  167  
7810927760a0d1 Alexander Graf 2010-07-29  168  	SCRATCH_RESTORE
7810927760a0d1 Alexander Graf 2010-07-29  169  
7810927760a0d1 Alexander Graf 2010-07-29  170  	/* Go back to caller */
7810927760a0d1 Alexander Graf 2010-07-29  171  kvm_emulate_mtmsr_branch:
7810927760a0d1 Alexander Graf 2010-07-29  172  	b	.
7810927760a0d1 Alexander Graf 2010-07-29  173  kvm_emulate_mtmsr_end:
7810927760a0d1 Alexander Graf 2010-07-29  174  

:::::: The code at line 132 was first introduced by commit
:::::: 7810927760a0d16d7a41be4dab895fbbf9445bc0 KVM: PPC: PV mtmsrd L=0 and mtmsr

:::::: TO: Alexander Graf <agraf@suse.de>
:::::: CC: Avi Kivity <avi@redhat.com>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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