lkml.org 
[lkml]   [2014]   [Jul]   [16]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v2 1/3] ACPI: ARM64 does not have a BIOS add config for BIOS table scan.
On 2014-7-17 7:49, H. Peter Anvin wrote:
> On 07/16/2014 04:46 PM, Luck, Tony wrote:
>>> + select ACPI_LEGACY_TABLES_LOOKUP if ACPI
>>
>>> This shouldn't actually be set on IA64, should it? IA64 doesn't have
>>> BIOS, either, it has EFI/UEFI, like ARM64...

Yes, I agree with you, thanks for pointing this out. if I remember
correctly, the EFI standard was introduced when IA64 came out.

>>
>> Which ACPI tables are in the "LEGACY" category affected by this option?
>>
>
> That's not what this is about... it is about how you find the root pointer.
>
> On a BIOS system it is found by scanning low memory. On an EFI system
> it is found by querying EFI for a specific UUID.

Thanks for the explanation.

Tony, if it is ok with you, I will modify the patch and will not select
ACPI_LEGACY_TABLES_LOOKUP on IA64, I'm waiting for your final confirmation.

Thanks
Hanjun


\
 
 \ /
  Last update: 2014-07-17 05:41    [W:0.045 / U:1.152 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site