Define '_PAGE_CHG_MASK' when 'NOMMU' to pass compiling. The related make: make ARCH=xtensa allmodconfig make ARCH=xtensa menuconfig set "xtensa-linux-gnu-" for "Cross compilier tool prefix" select "s6000" for "Processor type and features" -> "Xtensa Processor" make ARCH=xtensa EXTRA_CFLAGS=-W The related error: arch/xtensa/include/asm/pgtable.h: In function ‘pte_modify’: arch/xtensa/include/asm/pgtable.h:289:9: error: ‘_PAGE_CHG_MASK’ undeclared (first use in this function) Signed-off-by: Chen Gang <gang.chen@xxxxxxxxxxx> --- arch/xtensa/include/asm/pgtable.h | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-) diff --git a/arch/xtensa/include/asm/pgtable.h b/arch/xtensa/include/asm/pgtable.h index 7e09f70..a28c49b 100644 --- a/arch/xtensa/include/asm/pgtable.h +++ b/arch/xtensa/include/asm/pgtable.h @@ -149,9 +149,10 @@ #define _PAGE_DIRTY (1<<7) /* software: page dirty */ #define _PAGE_ACCESSED (1<<8) /* software: page accessed (read) */ +#define _PAGE_CHG_MASK (PAGE_MASK | _PAGE_ACCESSED | _PAGE_DIRTY) + #ifdef CONFIG_MMU -#define _PAGE_CHG_MASK (PAGE_MASK | _PAGE_ACCESSED | _PAGE_DIRTY) #define _PAGE_PRESENT (_PAGE_HW_VALID | _PAGE_CA_WB | _PAGE_ACCESSED) #define PAGE_NONE __pgprot(_PAGE_NONE | _PAGE_USER) -- 1.7.7.6 -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html