Messages in this thread | | | Date | Tue, 28 Oct 2008 03:23:59 -0400 | From | Shaya Potter <> | Subject | some sort of x86 build depends on CONFIG_PCI_QUIRKS |
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[not subscribed to linux-kernel so please cc me]
drivers/pci/quirks.c defines the variable forbid_dac
it's within an #ifdef CONFIG_PCI_QUIRKS block
however, arch/x86/include/asm/iommu.h extern's it
and iommu_setup() in arch/x86/kernel/pci-dma.c uses it
results in a build that fails at the end with
WARNING: modpost: Found 3 section mismatch(es). To see full details build your kernel with: 'make CONFIG_DEBUG_SECTION_MISMATCH=y' GEN .version CHK include/linux/compile.h UPD include/linux/compile.h CC init/version.o LD init/built-in.o LD .tmp_vmlinux1 arch/x86/kernel/built-in.o: In function `iommu_setup': pci-dma.c:(.init.text+0x31ed): undefined reference to `forbid_dac' pci-dma.c:(.init.text+0x320c): undefined reference to `forbid_dac' pci-dma.c:(.init.text+0x3252): undefined reference to `forbid_dac' make: *** [.tmp_vmlinux1] Error 1
relevant .config entries (I think)
# Linux kernel version: 2.6.28-rc2 # Tue Oct 28 02:59:45 2008 # # CONFIG_64BIT is not set CONFIG_X86_32=y # CONFIG_X86_64 is not set CONFIG_X86=y CONFIG_ARCH_DEFCONFIG="arch/x86/configs/i386_defconfig" CONFIG_GENERIC_TIME=y CONFIG_GENERIC_CMOS_UPDATE=y CONFIG_CLOCKSOURCE_WATCHDOG=y CONFIG_GENERIC_CLOCKEVENTS=y CONFIG_LOCKDEP_SUPPORT=y CONFIG_STACKTRACE_SUPPORT=y CONFIG_HAVE_LATENCYTOP_SUPPORT=y CONFIG_FAST_CMPXCHG_LOCAL=y CONFIG_MMU=y CONFIG_ZONE_DMA=y CONFIG_GENERIC_ISA_DMA=y CONFIG_GENERIC_IOMAP=y CONFIG_GENERIC_BUG=y CONFIG_GENERIC_HWEIGHT=y CONFIG_ARCH_MAY_HAVE_PC_FDC=y # CONFIG_RWSEM_GENERIC_SPINLOCK is not set CONFIG_RWSEM_XCHGADD_ALGORITHM=y CONFIG_ARCH_HAS_CPU_IDLE_WAIT=y CONFIG_GENERIC_CALIBRATE_DELAY=y # CONFIG_GENERIC_TIME_VSYSCALL is not set CONFIG_ARCH_HAS_CPU_RELAX=y CONFIG_ARCH_HAS_DEFAULT_IDLE=y CONFIG_ARCH_HAS_CACHE_LINE_SIZE=y # CONFIG_HAVE_SETUP_PER_CPU_AREA is not set # CONFIG_HAVE_CPUMASK_OF_CPU_MAP is not set CONFIG_ARCH_HIBERNATION_POSSIBLE=y CONFIG_ARCH_SUSPEND_POSSIBLE=y # CONFIG_ZONE_DMA32 is not set CONFIG_ARCH_POPULATES_NODE_MAP=y # CONFIG_AUDIT_ARCH is not set CONFIG_ARCH_SUPPORTS_OPTIMIZED_INLINING=y CONFIG_GENERIC_HARDIRQS=y CONFIG_GENERIC_IRQ_PROBE=y CONFIG_X86_BIOS_REBOOT=y CONFIG_KTIME_SCALAR=y CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
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