tree: https://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux-stable.git queue-5.4 head: 876253994894857f5d099a55147612e4f036d1c3 commit: 6b9b252fa791f704fb19ec451010bc6446ea44ce [56/241] KVM: s390: VSIE: correctly handle MVPG when in VSIE config: s390-randconfig-r014-20210512 (attached as .config) compiler: s390-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 # https://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux-stable.git/c... git remote add sashal-linux-stable https://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux-stable.git git fetch --no-tags sashal-linux-stable queue-5.4 git checkout 6b9b252fa791f704fb19ec451010bc6446ea44ce # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross W=1 ARCH=s390 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): In file included from include/linux/kvm_host.h:36, from arch/s390/kvm/vsie.c:10: arch/s390/include/asm/kvm_host.h:290:1: warning: alignment 1 of 'struct kvm_s390_sie_block' is less than 8 [-Wpacked-not-aligned] 290 | } __attribute__((packed)); | ^ arch/s390/kvm/vsie.c: In function 'vsie_handle_mvpg': 1004 | u64 *pei_block = &vsie_page->scb_o->mcic; | ^~ arch/s390/kvm/vsie.c:1010:9: error: implicit declaration of function '_kvm_s390_logical_to_effective'; did you mean 'kvm_s390_logical_to_effective'? [-Werror=implicit-function-declaration] 1010 | mask = _kvm_s390_logical_to_effective(&scb_s->gpsw, PAGE_MASK); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | kvm_s390_logical_to_effective arch/s390/kvm/vsie.c:1015:12: error: too many arguments to function 'kvm_s390_shadow_fault' 1015 | rc_dest = kvm_s390_shadow_fault(vcpu, vsie_page->gmap, dest, &pei_dest); | ^~~~~~~~~~~~~~~~~~~~~ In file included from arch/s390/kvm/vsie.c:22: arch/s390/kvm/gaccess.h:362:5: note: declared here 362 | int kvm_s390_shadow_fault(struct kvm_vcpu *vcpu, struct gmap *shadow, | ^~~~~~~~~~~~~~~~~~~~~ arch/s390/kvm/vsie.c:1016:11: error: too many arguments to function 'kvm_s390_shadow_fault' 1016 | rc_src = kvm_s390_shadow_fault(vcpu, vsie_page->gmap, src, &pei_src); | ^~~~~~~~~~~~~~~~~~~~~ In file included from arch/s390/kvm/vsie.c:22: arch/s390/kvm/gaccess.h:362:5: note: declared here 362 | int kvm_s390_shadow_fault(struct kvm_vcpu *vcpu, struct gmap *shadow, | ^~~~~~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +1004 arch/s390/kvm/vsie.c 999 1000 static int vsie_handle_mvpg(struct kvm_vcpu *vcpu, struct vsie_page *vsie_page) 1001 { 1002 struct kvm_s390_sie_block *scb_s = &vsie_page->scb_s; 1003 unsigned long pei_dest, pei_src, src, dest, mask; 1005 int edat, rc_dest, rc_src; 1006 union ctlreg0 cr0; 1007 1008 cr0.val = vcpu->arch.sie_block->gcr[0]; 1009 edat = cr0.edat && test_kvm_facility(vcpu->kvm, 8); 1010 mask = _kvm_s390_logical_to_effective(&scb_s->gpsw, PAGE_MASK); 1011 1012 dest = vsie_get_register(vcpu, vsie_page, scb_s->ipb >> 20) & mask; 1013 src = vsie_get_register(vcpu, vsie_page, scb_s->ipb >> 16) & mask; 1014 1015 rc_dest = kvm_s390_shadow_fault(vcpu, vsie_page->gmap, dest, &pei_dest); 1016 rc_src = kvm_s390_shadow_fault(vcpu, vsie_page->gmap, src, &pei_src); 1017 /* 1018 * Either everything went well, or something non-critical went wrong 1019 * e.g. because of a race. In either case, simply retry. 1020 */ 1021 if (rc_dest == -EAGAIN || rc_src == -EAGAIN || (!rc_dest && !rc_src)) { 1022 retry_vsie_icpt(vsie_page); 1023 return -EAGAIN; 1024 } 1025 /* Something more serious went wrong, propagate the error */ 1026 if (rc_dest < 0) 1027 return rc_dest; 1028 if (rc_src < 0) 1029 return rc_src; 1030 1031 /* The only possible suppressing exception: just deliver it */ 1032 if (rc_dest == PGM_TRANSLATION_SPEC || rc_src == PGM_TRANSLATION_SPEC) { 1033 clear_vsie_icpt(vsie_page); 1034 rc_dest = kvm_s390_inject_program_int(vcpu, PGM_TRANSLATION_SPEC); 1035 WARN_ON_ONCE(rc_dest); 1036 return 1; 1037 } 1038 1039 /* 1040 * Forward the PEI intercept to the guest if it was a page fault, or 1041 * also for segment and region table faults if EDAT applies. 1042 */ 1043 if (edat) { 1044 rc_dest = rc_dest == PGM_ASCE_TYPE ? rc_dest : 0; 1045 rc_src = rc_src == PGM_ASCE_TYPE ? rc_src : 0; 1046 } else { 1047 rc_dest = rc_dest != PGM_PAGE_TRANSLATION ? rc_dest : 0; 1048 rc_src = rc_src != PGM_PAGE_TRANSLATION ? rc_src : 0; 1049 } 1050 if (!rc_dest && !rc_src) { 1051 pei_block[0] = pei_dest; 1052 pei_block[1] = pei_src; 1053 return 1; 1054 } 1055 1056 retry_vsie_icpt(vsie_page); 1057 1058 /* 1059 * The host has edat, and the guest does not, or it was an ASCE type 1060 * exception. The host needs to inject the appropriate DAT interrupts 1061 * into the guest. 1062 */ 1063 if (rc_dest) 1064 return inject_fault(vcpu, rc_dest, dest, 1); 1065 return inject_fault(vcpu, rc_src, src, 0); 1066 } 1067 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org