Re: [PATCH v2 08/20] x86, ACPI: Find acpi tables in initrd early from head_32.S/head64.c

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



There is no 64-bit flat mode.  We use a #PF handler to emulate one by creating page tables on the fly.

Yinghai Lu <yinghai@xxxxxxxxxx> wrote:

>On Sun, Mar 10, 2013 at 3:25 AM, Pekka Enberg <penberg@xxxxxxxxxx>
>wrote:
>>
>> What is preventing us from making the 64-bit variant also work in
>flat
>> mode to make the code consistent and not hiding the differences under
>> the rug? What am I missing here?
>
>Boot loader could start kernel from 64bit directly from
>from arch/x86/boot/compressed/head_64.s::startup_64.
>
>initrd can be loaded by 64bit bootloader above 4G.
>
>So we even switch back to 32bit flat mode, we still can not access
>those initrd
>directly.
>
>Thanks
>
>Yinghai

-- 
Sent from my mobile phone. Please excuse brevity and lack of formatting.
--
To unsubscribe from this list: send the line "unsubscribe linux-acpi" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html


[Index of Archives]     [Linux IBM ACPI]     [Linux Power Management]     [Linux Kernel]     [Linux Laptop]     [Kernel Newbies]     [Share Photos]     [Security]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Samba]     [Video 4 Linux]     [Device Mapper]     [Linux Resources]

  Powered by Linux