On Thu, Dec 13, 2012 at 3:27 PM, H. Peter Anvin <[email protected]> wrote: > On 12/13/2012 02:02 PM, Yinghai Lu wrote: >> + * If we come here from a bootloader, kernel(text+data+bss+brk), >> + * ramdisk, zero_page, command line could be above 4G. >> + * We depend on an identity mapped page table being provided >> + * that maps our entire kernel(text+data+bss+brk), and hopefully >> + * all of memory. > > We should make it explicit what we depend on. We certainly *can* depend > only on text+data+bss+brk ... with the dynamic page table approach we > can do that, and that would be most conservative; if we depend on other > things we should make that explicit, not just here but in boot.txt.
yes, in my version, only need kernel(text+data+bss+brk) get mapped. aka the INIT_SIZE for decompressing. -- 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/
