[Finally dropping that annoying fastboot list from cc. Please never include any closed
mailing lists in l-k posts. Thanks]
> That won't worked because in arch/86_64/kernel/e820.c, the exactmap
> parsing clobbers end_pfn_map.
That's a bug imho. It shouldn't do that.
end_pfn_map should be always the highest address in e820 so that we
can access all firmware tables safely.
-Andi
>
> static int __init parse_memmap_opt(char *p)
> {
> char *oldp;
> unsigned long long start_at, mem_size;
>
> if (!strcmp(p, "exactmap")) {
> #ifdef CONFIG_CRASH_DUMP
> /* If we are doing a crash dump, we
> * still need to know the real mem
> * size before original memory map is
> * reset.
> */
> saved_max_pfn = e820_end_of_ram();
> #endif
> end_pfn_map = 0;
> e820.nr_map = 0;
> userdef = 1;
> return 0;
> }
-
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