On 07/24/16 at 07:07am, kbuild test robot wrote: > Hi, Sorry, I didn't notice this. And after checking code, APIC_DM_EXTINT could be added for kvm on purpose thought it's not defined in Intel Arch manual. I am not familiar with KVM, so please drop this patch to avoid warning. I will make time to study it later. Thanks Baoquan > > [auto build test WARNING on iommu/next] > [also build test WARNING on v4.7-rc7 next-20160722] > [cannot apply to tip/x86/core] > [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/Baoquan-He/Enable-legacy-irq-mode-before-jump-to-kexec-kdump-kernel/20160724-054857 > base: https://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu.git next > reproduce: > # apt-get install sparse > make ARCH=x86_64 allmodconfig > make C=1 CF=-D__CHECK_ENDIAN__ > > > sparse warnings: (new ones prefixed by >>) > > include/linux/compiler.h:232:8: sparse: attribute 'no_sanitize_address': unknown attribute > arch/x86/kvm/lapic.c:186:15: sparse: incompatible types in comparison expression (different address spaces) > arch/x86/kvm/lapic.c:963:14: sparse: undefined identifier 'APIC_DM_EXTINT' > >> arch/x86/kvm/lapic.c:963:14: sparse: incompatible types for 'case' statement > arch/x86/kvm/lapic.c:699:15: sparse: incompatible types in comparison expression (different address spaces) > arch/x86/kvm/lapic.c:799:15: sparse: incompatible types in comparison expression (different address spaces) > arch/x86/kvm/lapic.c:963:14: sparse: Expected constant expression in case statement > arch/x86/kvm/lapic.c: In function '__apic_accept_irq': > arch/x86/kvm/lapic.c:963:7: error: 'APIC_DM_EXTINT' undeclared (first use in this function) > case APIC_DM_EXTINT: > ^~~~~~~~~~~~~~ > arch/x86/kvm/lapic.c:963:7: note: each undeclared identifier is reported only once for each function it appears in > > vim +/case +963 arch/x86/kvm/lapic.c > > c5ec15340 drivers/kvm/lapic.c He, Qing 2007-09-03 947 vcpu->vcpu_id); > c5ec15340 drivers/kvm/lapic.c He, Qing 2007-09-03 948 } > 97222cc83 drivers/kvm/lapic.c Eddie Dong 2007-09-12 949 break; > 97222cc83 drivers/kvm/lapic.c Eddie Dong 2007-09-12 950 > 97222cc83 drivers/kvm/lapic.c Eddie Dong 2007-09-12 951 case APIC_DM_STARTUP: > 1b10bf31a arch/x86/kvm/lapic.c Jan Kiszka 2008-09-30 952 apic_debug("SIPI to vcpu %d vector 0x%02x\n", > c5ec15340 drivers/kvm/lapic.c He, Qing 2007-09-03 953 vcpu->vcpu_id, vector); > 6da7e3f64 arch/x86/kvm/lapic.c Gleb Natapov 2009-03-05 954 result = 1; > 66450a21f arch/x86/kvm/lapic.c Jan Kiszka 2013-03-13 955 apic->sipi_vector = vector; > 66450a21f arch/x86/kvm/lapic.c Jan Kiszka 2013-03-13 956 /* make sure sipi_vector is visible for the receiver */ > 66450a21f arch/x86/kvm/lapic.c Jan Kiszka 2013-03-13 957 smp_wmb(); > 66450a21f arch/x86/kvm/lapic.c Jan Kiszka 2013-03-13 958 set_bit(KVM_APIC_SIPI, &apic->pending_events); > 3842d135f arch/x86/kvm/lapic.c Avi Kivity 2010-07-27 959 kvm_make_request(KVM_REQ_EVENT, vcpu); > d76901750 arch/x86/kvm/lapic.c Marcelo Tosatti 2008-09-08 960 kvm_vcpu_kick(vcpu); > 97222cc83 drivers/kvm/lapic.c Eddie Dong 2007-09-12 961 break; > 97222cc83 drivers/kvm/lapic.c Eddie Dong 2007-09-12 962 > 23930f952 arch/x86/kvm/lapic.c Jan Kiszka 2008-09-26 @963 case APIC_DM_EXTINT: > 23930f952 arch/x86/kvm/lapic.c Jan Kiszka 2008-09-26 964 /* > 23930f952 arch/x86/kvm/lapic.c Jan Kiszka 2008-09-26 965 * Should only be called by kvm_apic_local_deliver() with LVT0, > 23930f952 arch/x86/kvm/lapic.c Jan Kiszka 2008-09-26 966 * before NMI watchdog was enabled. Already handled by > 23930f952 arch/x86/kvm/lapic.c Jan Kiszka 2008-09-26 967 * kvm_apic_accept_pic_intr(). > 23930f952 arch/x86/kvm/lapic.c Jan Kiszka 2008-09-26 968 */ > 23930f952 arch/x86/kvm/lapic.c Jan Kiszka 2008-09-26 969 break; > 23930f952 arch/x86/kvm/lapic.c Jan Kiszka 2008-09-26 970 > 97222cc83 drivers/kvm/lapic.c Eddie Dong 2007-09-12 971 default: > > :::::: The code at line 963 was first introduced by commit > :::::: 23930f9521c9c4d4aa96cdb9d1e1703f3782bb94 KVM: x86: Enable NMI Watchdog via in-kernel PIT source > > :::::: TO: Jan Kiszka <jan.kiszka at siemens.com> > :::::: CC: Avi Kivity <avi at redhat.com> > > --- > 0-DAY kernel test infrastructure Open Source Technology Center > https://lists.01.org/pipermail/kbuild-all Intel Corporation
