tree: git://git.lwn.net/linux-2.6 docs-next
head: 52042e2db45290f6a512d525518488b7bf143531
commit: 52042e2db45290f6a512d525518488b7bf143531 [23/23] scripts: kernel-doc: validate kernel-doc markup with the actual names
config: mips-loongson3_defconfig (attached as .config)
compiler: mips64el-linux-gcc (GCC) 9.3.0
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
git remote add lwn git://git.lwn.net/linux-2.6
git fetch --no-tags lwn docs-next
git checkout 52042e2db45290f6a512d525518488b7bf143531
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=mips
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>
All warnings (new ones prefixed by >>):
arch/mips/kvm/vz.c:472: warning: Function parameter or member 'out_compare' not described in '_kvm_vz_save_htimer'
arch/mips/kvm/vz.c:472: warning: Function parameter or member 'out_cause' not described in '_kvm_vz_save_htimer'
arch/mips/kvm/vz.c:472: warning: Excess function parameter 'compare' description in '_kvm_vz_save_htimer'
arch/mips/kvm/vz.c:472: warning: Excess function parameter 'cause' description in '_kvm_vz_save_htimer'
>> arch/mips/kvm/vz.c:1553: warning: expecting prototype for kvm_trap_vz_handle_cop_unusuable(). Prototype was for kvm_trap_vz_handle_cop_unusable() instead
vim +1553 arch/mips/kvm/vz.c
c992a4f6a9b0a37c James Hogan 2017-03-14 1544
c992a4f6a9b0a37c James Hogan 2017-03-14 1545 /**
c992a4f6a9b0a37c James Hogan 2017-03-14 1546 * kvm_trap_vz_handle_cop_unusuable() - Guest used unusable coprocessor.
c992a4f6a9b0a37c James Hogan 2017-03-14 1547 * @vcpu: Virtual CPU context.
c992a4f6a9b0a37c James Hogan 2017-03-14 1548 *
c992a4f6a9b0a37c James Hogan 2017-03-14 1549 * Handle when the guest attempts to use a coprocessor which hasn't been allowed
c992a4f6a9b0a37c James Hogan 2017-03-14 1550 * by the root context.
c992a4f6a9b0a37c James Hogan 2017-03-14 1551 */
c992a4f6a9b0a37c James Hogan 2017-03-14 1552 static int kvm_trap_vz_handle_cop_unusable(struct kvm_vcpu *vcpu)
c992a4f6a9b0a37c James Hogan 2017-03-14 @1553 {
c992a4f6a9b0a37c James Hogan 2017-03-14 1554 u32 cause = vcpu->arch.host_cp0_cause;
c992a4f6a9b0a37c James Hogan 2017-03-14 1555 enum emulation_result er = EMULATE_FAIL;
c992a4f6a9b0a37c James Hogan 2017-03-14 1556 int ret = RESUME_GUEST;
c992a4f6a9b0a37c James Hogan 2017-03-14 1557
c992a4f6a9b0a37c James Hogan 2017-03-14 1558 if (((cause & CAUSEF_CE) >> CAUSEB_CE) == 1) {
c992a4f6a9b0a37c James Hogan 2017-03-14 1559 /*
c992a4f6a9b0a37c James Hogan 2017-03-14 1560 * If guest FPU not present, the FPU operation should have been
c992a4f6a9b0a37c James Hogan 2017-03-14 1561 * treated as a reserved instruction!
c992a4f6a9b0a37c James Hogan 2017-03-14 1562 * If FPU already in use, we shouldn't get this at all.
c992a4f6a9b0a37c James Hogan 2017-03-14 1563 */
c992a4f6a9b0a37c James Hogan 2017-03-14 1564 if (WARN_ON(!kvm_mips_guest_has_fpu(&vcpu->arch) ||
c992a4f6a9b0a37c James Hogan 2017-03-14 1565 vcpu->arch.aux_inuse & KVM_MIPS_AUX_FPU)) {
c992a4f6a9b0a37c James Hogan 2017-03-14 1566 preempt_enable();
c992a4f6a9b0a37c James Hogan 2017-03-14 1567 return EMULATE_FAIL;
c992a4f6a9b0a37c James Hogan 2017-03-14 1568 }
c992a4f6a9b0a37c James Hogan 2017-03-14 1569
c992a4f6a9b0a37c James Hogan 2017-03-14 1570 kvm_own_fpu(vcpu);
c992a4f6a9b0a37c James Hogan 2017-03-14 1571 er = EMULATE_DONE;
c992a4f6a9b0a37c James Hogan 2017-03-14 1572 }
c992a4f6a9b0a37c James Hogan 2017-03-14 1573 /* other coprocessors not handled */
c992a4f6a9b0a37c James Hogan 2017-03-14 1574
c992a4f6a9b0a37c James Hogan 2017-03-14 1575 switch (er) {
c992a4f6a9b0a37c James Hogan 2017-03-14 1576 case EMULATE_DONE:
c992a4f6a9b0a37c James Hogan 2017-03-14 1577 ret = RESUME_GUEST;
c992a4f6a9b0a37c James Hogan 2017-03-14 1578 break;
c992a4f6a9b0a37c James Hogan 2017-03-14 1579
c992a4f6a9b0a37c James Hogan 2017-03-14 1580 case EMULATE_FAIL:
c34b26b98caca48e Tianjia Zhang 2020-06-23 1581 vcpu->run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
c992a4f6a9b0a37c James Hogan 2017-03-14 1582 ret = RESUME_HOST;
c992a4f6a9b0a37c James Hogan 2017-03-14 1583 break;
c992a4f6a9b0a37c James Hogan 2017-03-14 1584
c992a4f6a9b0a37c James Hogan 2017-03-14 1585 default:
c992a4f6a9b0a37c James Hogan 2017-03-14 1586 BUG();
c992a4f6a9b0a37c James Hogan 2017-03-14 1587 }
c992a4f6a9b0a37c James Hogan 2017-03-14 1588 return ret;
c992a4f6a9b0a37c James Hogan 2017-03-14 1589 }
c992a4f6a9b0a37c James Hogan 2017-03-14 1590
:::::: The code at line 1553 was first introduced by commit
:::::: c992a4f6a9b0a37c8bd7dfc727ecc3fed125c16b KVM: MIPS: Implement VZ support
:::::: TO: James Hogan <james.hogan@xxxxxxxxxx>
:::::: CC: James Hogan <james.hogan@xxxxxxxxxx>
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
Attachment:
.config.gz
Description: application/gzip
