Re: x86: early boot crash: "alloc_low_page: ran out of memory" (bisected)

[Yinghai Lu]

On Mon, Aug 12, 2013 at 9:27 AM, Dave Hansen <dave@xxxxxxxx> wrote:
> On 08/09/2013 07:21 PM, Yinghai Lu wrote:
>> -/* need 4 4k for initial PMD_SIZE, 4k for 0-ISA_END_ADDRESS */
>> -#define INIT_PGT_BUF_SIZE    (5 * PAGE_SIZE)
>> +/* need 4 4k for initial PMD_SIZE,  3 4k for 0-ISA_END_ADDRESS */
>> +#define INIT_PGT_BUF_SIZE    (7 * PAGE_SIZE)
>>  RESERVE_BRK(early_pgt_alloc, INIT_PGT_BUF_SIZE);
>>  void  __init early_alloc_pgt_buf(void)
>
> That patch allows me to boot again.  I've also attached a boot with the
> debug options that you asked for.
>
> I'm really curious to see the full changelog for why this patch helps
> any why it's only triggered for large memory sizes. :)

Thanks, please check changelog at

https://patchwork.kernel.org/patch/2843321/

Yinghai
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