Messages in this thread | | | Date | Mon, 31 Jul 2006 19:34:57 -0700 | From | "H. Peter Anvin" <> | Subject | Re: [Fastboot] [CFT] ELF Relocatable x86 and x86_64 bzImages |
| |
Eric W. Biederman wrote: > >> Ok. I am decompressing the kernel to 16MB and after reducing 1MB of >> CONFIG_PHYSICAL_START I am left with 15MB which is not 4M aligned >> hence I seems to be running into it. >> >> I changed it to >> >> if ((u32)output) & 0x3fffff) >> >> and kdump kernel booted fine. But this will run into issues if I load >> kernel at 1MB. >> >> I got a dump question. Why do I have to load the kernel at 4MB alignment? >> Existing kernel boots loads at 1MB, which is non 4MB aligned and it works >> fine? > > 4MB is a little harsh, but I haven't worked through what the exact rules > are, I know 4MB is the worst case alignment for arch/i386. >
4 MB would be worst case for i386; 2 MB for x86-64. Actually the x86-64 worst case would be gigabyte, but that's more than a little bit extreme.
-hpa - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |