[XenARM] An error during compiling linux(vex-express-dt)

[Josh Zhao <joshsystem@xxxxxxxxx>]

Hi all,
I followed the instruction in wiki http://wiki.xen.org/wiki/Xen_ARMv7_with_Virtualization_Extensions as like this:
1. git the specific vexpress-dt branch of git://xenbits.xen.org/people/dvrabel/linux.git
2. download configuration file and copy it into source code folder.
3. compile.

/home/josh/project/xen/linux/arch/arm/include/asm/processor.h:86:5: warning: "__LINUX_ARM_ARCH__" is not defined [-Wundef]
/home/josh/project/xen/linux/arch/arm/include/asm/processor.h:106:5: warning: "__LINUX_ARM_ARCH__" is not defined [-Wundef]
In file included from include/linux/atomic.h:4:0,
                 from include/linux/spinlock.h:387,
                 from include/linux/seqlock.h:29,
                 from include/linux/time.h:8,
                 from include/linux/timex.h:56,
                 from include/linux/sched.h:57,
                 from arch/arm/kernel/asm-offsets.c:13:
/home/josh/project/xen/linux/arch/arm/include/asm/atomic.h:30:5: warning: "__LINUX_ARM_ARCH__" is not defined [-Wundef]
In file included from include/linux/time.h:9:0,
                 from include/linux/timex.h:56,
                 from include/linux/sched.h:57,
                 from arch/arm/kernel/asm-offsets.c:13:
include/linux/math64.h: In function 'div_u64_rem':
include/linux/math64.h:51:15: error: '__LINUX_ARM_ARCH__' undeclared (first use in this function)
include/linux/math64.h:51:15: note: each undeclared identifier is reported only once for each function it appears in
In file included from include/linux/mm_types.h:15:0,
                 from include/linux/sched.h:64,
                 from arch/arm/kernel/asm-offsets.c:13:
/home/josh/project/xen/linux/arch/arm/include/asm/page.h: At top level:
/home/josh/project/xen/linux/arch/arm/include/asm/page.h:116:2: error: #error Unknown user operations model
In file included from include/linux/mm.h:43:0,
                 from arch/arm/kernel/asm-offsets.c:14:
/home/josh/project/xen/linux/arch/arm/include/asm/pgtable.h:235:5: warning: "__LINUX_ARM_ARCH__" is not defined [-Wundef]
In file included from /home/josh/project/xen/linux/arch/arm/include/asm/cacheflush.h:15:0,
                 from arch/arm/kernel/asm-offsets.c:16:
/home/josh/project/xen/linux/arch/arm/include/asm/glue-cache.h:129:2: error: #error Unknown cache maintenance model
In file included from /home/josh/project/xen/linux/arch/arm/include/asm/cacheflush.h:17:0,
                 from arch/arm/kernel/asm-offsets.c:16:
/home/josh/project/xen/linux/arch/arm/include/asm/cachetype.h:28:5: warning: "__LINUX_ARM_ARCH__" is not defined [-Wundef]
/home/josh/project/xen/linux/arch/arm/include/asm/cachetype.h:33:7: warning: "__LINUX_ARM_ARCH__" is not defined [-Wundef]
In file included from arch/arm/kernel/asm-offsets.c:16:0:
/home/josh/project/xen/linux/arch/arm/include/asm/cacheflush.h:194:7: warning: "__LINUX_ARM_ARCH__" is not defined [-Wundef]
/home/josh/project/xen/linux/arch/arm/include/asm/cacheflush.h:196:7: warning: "__LINUX_ARM_ARCH__" is not defined [-Wundef]
In file included from arch/arm/kernel/asm-offsets.c:17:0:
/home/josh/project/xen/linux/arch/arm/include/asm/glue-df.h:107:2: error: #error Unknown data abort handler type
In file included from arch/arm/kernel/asm-offsets.c:18:0:
/home/josh/project/xen/linux/arch/arm/include/asm/glue-pf.h:54:2: error: #error Unknown prefetch abort handler type
make[1]: *** [arch/arm/kernel/asm-offsets.s] Error 1
make: *** [prepare0] Error 2

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