On Thu, Dec 13, 2012 at 4:44 PM, Yinghai Lu <ying...@kernel.org> wrote: > On Thu, Dec 13, 2012 at 4:38 PM, H. Peter Anvin <h...@zytor.com> wrote: >> On 12/13/2012 04:13 PM, Yinghai Lu wrote: >> >> It is definitely the minmum we can rely on, and so is the minimum we should >> rely on. In fact, we don't even need .bss/.brk to be mapped, but we >> probably should require that as a matter of protocol. > > in my version of arch/x86/kernel/head_64.S is using BRK to do > ident/kernel high mapping > for kernel that is above 4G. > so .brk is needed.
also need to make sure zero page and command line get ident mapping. because arch/x86/boot/compressed/head_64.S is using them. -- 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/
