* [sean-jc:x86/no_bug_on_bad_eoi_vector 120/120] arch/x86/kvm/lapic.c:1625:6: error: conflicting types for 'kvm_apic_set_eoi_accelerated'; have 'void(struct kvm_vcpu *, u8)' {aka 'void(struct kvm_vcpu *, unsigned char)'}
@ 2026-07-28 23:06 kernel test robot
0 siblings, 0 replies; 2+ messages in thread
From: kernel test robot @ 2026-07-28 23:06 UTC (permalink / raw)
To: Sean Christopherson; +Cc: oe-kbuild-all
Hi Sean,
FYI, the error/warning was bisected to this commit, please ignore it if it's irrelevant.
tree: https://github.com/sean-jc/linux x86/no_bug_on_bad_eoi_vector
head: 49569850d8b90a3da31a4d3e2518ce4aa618c242
commit: 49569850d8b90a3da31a4d3e2518ce4aa618c242 [120/120] KVM: x86: Track kvm_vcpu_arch.pending_ioapic_eoi as a u8 to drop dead BUG_ON()
config: x86_64-rhel-9.4-bpf (https://download.01.org/0day-ci/archive/20260729/202607290105.TCwZYQef-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/20260729/202607290105.TCwZYQef-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/202607290105.TCwZYQef-lkp@intel.com/
All errors (new ones prefixed by >>):
>> arch/x86/kvm/lapic.c:1625:6: error: conflicting types for 'kvm_apic_set_eoi_accelerated'; have 'void(struct kvm_vcpu *, u8)' {aka 'void(struct kvm_vcpu *, unsigned char)'}
1625 | void kvm_apic_set_eoi_accelerated(struct kvm_vcpu *vcpu, u8 vector)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from arch/x86/kvm/irq.h:19,
from arch/x86/kvm/lapic.c:41:
arch/x86/kvm/lapic.h:180:6: note: previous declaration of 'kvm_apic_set_eoi_accelerated' with type 'void(struct kvm_vcpu *, int)'
180 | void kvm_apic_set_eoi_accelerated(struct kvm_vcpu *vcpu, int vector);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from include/linux/linkage.h:7,
from arch/x86/include/asm/cache.h:5,
from include/vdso/cache.h:5,
from include/linux/cache.h:6,
from arch/x86/include/asm/current.h:10,
from include/linux/sched.h:12,
from include/linux/resume_user_mode.h:6,
from include/linux/entry-virt.h:6,
from include/linux/kvm_host.h:5,
from arch/x86/kvm/lapic.c:20:
arch/x86/kvm/lapic.c:1634:32: error: conflicting types for 'kvm_apic_set_eoi_accelerated'; have 'void(struct kvm_vcpu *, u8)' {aka 'void(struct kvm_vcpu *, unsigned char)'}
1634 | EXPORT_SYMBOL_FOR_KVM_INTERNAL(kvm_apic_set_eoi_accelerated);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/export.h:76:28: note: in definition of macro '__EXPORT_SYMBOL'
76 | extern typeof(sym) sym; \
| ^~~
include/linux/kvm_types.h:13:9: note: in expansion of macro 'EXPORT_SYMBOL_FOR_MODULES'
13 | EXPORT_SYMBOL_FOR_MODULES(symbol, __stringify(KVM_SUB_MODULES))
| ^~~~~~~~~~~~~~~~~~~~~~~~~
arch/x86/kvm/lapic.c:1634:1: note: in expansion of macro 'EXPORT_SYMBOL_FOR_KVM_INTERNAL'
1634 | EXPORT_SYMBOL_FOR_KVM_INTERNAL(kvm_apic_set_eoi_accelerated);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/x86/kvm/lapic.h:180:6: note: previous declaration of 'kvm_apic_set_eoi_accelerated' with type 'void(struct kvm_vcpu *, int)'
180 | void kvm_apic_set_eoi_accelerated(struct kvm_vcpu *vcpu, int vector);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
vim +1625 arch/x86/kvm/lapic.c
1620
1621 /*
1622 * this interface assumes a trap-like exit, which has already finished
1623 * desired side effect including vISR and vPPR update.
1624 */
> 1625 void kvm_apic_set_eoi_accelerated(struct kvm_vcpu *vcpu, u8 vector)
1626 {
1627 struct kvm_lapic *apic = vcpu->arch.apic;
1628
1629 trace_kvm_eoi(apic, vector);
1630
1631 kvm_ioapic_send_eoi(apic, vector);
1632 kvm_make_request(KVM_REQ_EVENT, apic->vcpu);
1633 }
1634 EXPORT_SYMBOL_FOR_KVM_INTERNAL(kvm_apic_set_eoi_accelerated);
1635
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
^ permalink raw reply [flat|nested] 2+ messages in thread
* [sean-jc:x86/no_bug_on_bad_eoi_vector 120/120] arch/x86/kvm/lapic.c:1625:6: error: conflicting types for 'kvm_apic_set_eoi_accelerated'; have 'void(struct kvm_vcpu *, u8)' {aka 'void(struct kvm_vcpu *, unsigned char)'}
@ 2026-07-28 23:15 kernel test robot
0 siblings, 0 replies; 2+ messages in thread
From: kernel test robot @ 2026-07-28 23:15 UTC (permalink / raw)
To: Sean Christopherson; +Cc: oe-kbuild-all
Hi Sean,
FYI, the error/warning was bisected to this commit, please ignore it if it's irrelevant.
tree: https://github.com/sean-jc/linux x86/no_bug_on_bad_eoi_vector
head: 49569850d8b90a3da31a4d3e2518ce4aa618c242
commit: 49569850d8b90a3da31a4d3e2518ce4aa618c242 [120/120] KVM: x86: Track kvm_vcpu_arch.pending_ioapic_eoi as a u8 to drop dead BUG_ON()
config: i386-allmodconfig (https://download.01.org/0day-ci/archive/20260729/202607290650.dU7xZ2eC-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/20260729/202607290650.dU7xZ2eC-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/202607290650.dU7xZ2eC-lkp@intel.com/
All errors (new ones prefixed by >>):
>> arch/x86/kvm/lapic.c:1625:6: error: conflicting types for 'kvm_apic_set_eoi_accelerated'; have 'void(struct kvm_vcpu *, u8)' {aka 'void(struct kvm_vcpu *, unsigned char)'}
1625 | void kvm_apic_set_eoi_accelerated(struct kvm_vcpu *vcpu, u8 vector)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from arch/x86/kvm/irq.h:19,
from arch/x86/kvm/lapic.c:41:
arch/x86/kvm/lapic.h:180:6: note: previous declaration of 'kvm_apic_set_eoi_accelerated' with type 'void(struct kvm_vcpu *, int)'
180 | void kvm_apic_set_eoi_accelerated(struct kvm_vcpu *vcpu, int vector);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from include/linux/linkage.h:7,
from arch/x86/include/asm/cache.h:5,
from include/vdso/cache.h:5,
from include/linux/cache.h:6,
from arch/x86/include/asm/current.h:10,
from include/linux/sched.h:12,
from include/linux/resume_user_mode.h:6,
from include/linux/entry-virt.h:6,
from include/linux/kvm_host.h:5,
from arch/x86/kvm/lapic.c:20:
arch/x86/kvm/lapic.c:1634:32: error: conflicting types for 'kvm_apic_set_eoi_accelerated'; have 'void(struct kvm_vcpu *, u8)' {aka 'void(struct kvm_vcpu *, unsigned char)'}
1634 | EXPORT_SYMBOL_FOR_KVM_INTERNAL(kvm_apic_set_eoi_accelerated);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/export.h:76:28: note: in definition of macro '__EXPORT_SYMBOL'
76 | extern typeof(sym) sym; \
| ^~~
include/linux/kvm_types.h:13:9: note: in expansion of macro 'EXPORT_SYMBOL_FOR_MODULES'
13 | EXPORT_SYMBOL_FOR_MODULES(symbol, __stringify(KVM_SUB_MODULES))
| ^~~~~~~~~~~~~~~~~~~~~~~~~
arch/x86/kvm/lapic.c:1634:1: note: in expansion of macro 'EXPORT_SYMBOL_FOR_KVM_INTERNAL'
1634 | EXPORT_SYMBOL_FOR_KVM_INTERNAL(kvm_apic_set_eoi_accelerated);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/x86/kvm/lapic.h:180:6: note: previous declaration of 'kvm_apic_set_eoi_accelerated' with type 'void(struct kvm_vcpu *, int)'
180 | void kvm_apic_set_eoi_accelerated(struct kvm_vcpu *vcpu, int vector);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
vim +1625 arch/x86/kvm/lapic.c
1620
1621 /*
1622 * this interface assumes a trap-like exit, which has already finished
1623 * desired side effect including vISR and vPPR update.
1624 */
> 1625 void kvm_apic_set_eoi_accelerated(struct kvm_vcpu *vcpu, u8 vector)
1626 {
1627 struct kvm_lapic *apic = vcpu->arch.apic;
1628
1629 trace_kvm_eoi(apic, vector);
1630
1631 kvm_ioapic_send_eoi(apic, vector);
1632 kvm_make_request(KVM_REQ_EVENT, apic->vcpu);
1633 }
1634 EXPORT_SYMBOL_FOR_KVM_INTERNAL(kvm_apic_set_eoi_accelerated);
1635
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
^ permalink raw reply [flat|nested] 2+ messages in thread
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2026-07-28 23:06 [sean-jc:x86/no_bug_on_bad_eoi_vector 120/120] arch/x86/kvm/lapic.c:1625:6: error: conflicting types for 'kvm_apic_set_eoi_accelerated'; have 'void(struct kvm_vcpu *, u8)' {aka 'void(struct kvm_vcpu *, unsigned char)'} kernel test robot
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