On Fri, 31 May 2013, Arnd Bergmann wrote: > On Friday 31 May 2013 16:18:50 Lee Jones wrote: > > On Fri, 31 May 2013, Arnd Bergmann wrote: > > > > > On Friday 31 May 2013 15:24:32 Lee Jones wrote: > > > > In order to utilise all of the memory located on ux500 based devices > > > > we have to enable HIGHMEM. Without it the kernel truncates memory down > > > > to what's left after the PAGE_OFFSET has been applied, which doesn't > > > > leave an awful lot, especially if we're running large rootfs' such > > > > as full Linux desktop distributions or Android. > > > > > > > > Signed-off-by: Lee Jones <[email protected]> > > > > > > How much memory do those devices have? Enabling HIGHMEM is quite > > > expensive. > > > > Another 1GB. > > You mean you have 2GB total or 1.75GB? You could just use
We have 2GB in total. > CONFIG_VMSPLIT_2G to an extra GB compared to the default, which > is what vexpress, imx and s5p already do, but you still have to > put the vmalloc area in the low 2GB then. Isn't this for 4GB systems? -- Lee Jones Linaro ST-Ericsson Landing Team Lead Linaro.org │ Open source software for ARM SoCs Follow Linaro: Facebook | Twitter | Blog -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
