From: Christian Kujau CC drivers/pci/msi-apic.o In file included from include/asm/msi.h:11, from drivers/pci/msi.h:71, from drivers/pci/msi-apic.c:8: include/asm/smp.h:103: error: syntax error before '->' token akpm: nasty. It appears to be static inline unsigned int cpu_mask_to_apicid(cpumask_t cpumask) conflicting with include/asm-x86_64/mach_apic.h's #define cpu_mask_to_apicid (genapic->cpu_mask_to_apicid) And I don't know which patch in rc4-mm1 triggered this. Fixing this in the .c file seems wrong. Including asm/smp.h instead of linux/smp.h seems wrong too. Need that .config. Cc: Andi Kleen Signed-off-by: Andrew Morton --- drivers/pci/msi-apic.c | 1 + 1 file changed, 1 insertion(+) diff -puN drivers/pci/msi-apic.c~x86_64-msi-apic-build-fix drivers/pci/msi-apic.c --- devel/drivers/pci/msi-apic.c~x86_64-msi-apic-build-fix 2006-06-09 00:42:51.000000000 -0700 +++ devel-akpm/drivers/pci/msi-apic.c 2006-06-09 00:42:51.000000000 -0700 @@ -4,6 +4,7 @@ #include #include +#include #include "msi.h" _