"H. Peter Anvin" <h...@zytor.com> writes: > On 07/01/2012 01:40 PM, Eric W. Biederman wrote: >> >> So I have tracked down part of the crazyness. >> CONFIG_RODATA actually uses 2MB alignment, making >> -z max_page_size=4096 a bit questionable. >> > > Questionable how? It's not really like it matters since we're not going > to mmap the ELF.
Questionable as in the current elf loader in misc.c relies on the fact that there is an almost a fixed offset between physical addresses and file offsets for all of the PT_LOAD segments in the Elf header. In fact CONFIG_RODATA && CONFIG_X86_64 && CONFIG_SMP in combination with -z max_page_size=4096 fails to boot. The Elf loader in misc.c starts coping from lower addresses to higher addresses, instead of higher addresses to lower and that fails miserably. But -z max_page_size=4096 is not the problem the ELF loader is. Eric -- 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/
