Axel Lin <axel....@ingics.com> writes: > 2013/11/7 Ming Lei <tom.leim...@gmail.com>: >> Hi, >> >> On Thu, Nov 7, 2013 at 10:47 AM, Axel Lin <axel....@ingics.com> wrote: >>> >>> hi Ming, >>> Seems CONFIG_PAGE_OFFSET is not configurabe in "make menuconfig". >>> And I found CONFIG_PAGE_OFFSET=0xC0000000 for all below configs... >>> $ make at91_dt_defconfig; grep CONFIG_PAGE_OFFSET .config >>> $ make ep93xx_defconfig; grep CONFIG_PAGE_OFFSET .config >>> $ make imx_v4_v5_defconfig; grep CONFIG_PAGE_OFFSET .config >>> $ make mxs_defconfig; grep CONFIG_PAGE_OFFSET .config >>> $ make omap2plus_defconfig; grep CONFIG_PAGE_OFFSET .config >>> $ make s3c6400_defconfig; grep CONFIG_PAGE_OFFSET .config >>> $ make at91x40_defconfig; grep CONFIG_PAGE_OFFSET .config >>> ( at91x40_defconfig is also arm7tdmi ) >> >> Firstly it can be configured via VMSPLIT_3GVMSPLIT_2G/VMSPLIT_1G. >> >> Secondly, configurable or not isn't the point, and maybe some uclinux >> platforms do not use CONFIG_PAGE_OFFSET at all, but they should >> set it as a reasonable value or at least be below than the start link >> address of vmlinux. > > Hi Ming, > > I found in arch/arm/include/asm/memory.h: > CONFIG_PAGE_OFFSET is not used if !CONFIG_MMU. > So looks like setting CONFIG_PAGE_OFFSET to other value still won't work.
This seems like the simplest solution, but it may mean you still have crap in /proc/kallsyms. Does it work for you? Thanks, Rusty. diff --git a/scripts/link-vmlinux.sh b/scripts/link-vmlinux.sh index 32b10f53d0b4..c3bd3efec4cc 100644 --- a/scripts/link-vmlinux.sh +++ b/scripts/link-vmlinux.sh @@ -82,7 +82,9 @@ kallsyms() kallsymopt="${kallsymopt} --all-symbols" fi - kallsymopt="${kallsymopt} --page-offset=$CONFIG_PAGE_OFFSET" + if [ -n "${CONFIG_MMU}" ]; then + kallsymopt="${kallsymopt} --page-offset=$CONFIG_PAGE_OFFSET" + fi local aflags="${KBUILD_AFLAGS} ${KBUILD_AFLAGS_KERNEL} \ ${NOSTDINC_FLAGS} ${LINUXINCLUDE} ${KBUILD_CPPFLAGS}" -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/