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. Thanks, Axel -- 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/
