[lkml]   [2012]   [May]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH 02/11] PCI: Try to allocate mem64 above 4G at first
On 05/29/2012 11:17 AM, Yinghai Lu wrote:
> pci bridge could support 16bits and 32bits io port.
> but we did not record if 32bits is supported.

Okay, so this is the actual problem, no?

> so during allocating, could have allocated above 64k address to non
> 32bit bridge.
> but x86 is ok, because ioport.end always set to 0xffff.
> other arches with IO_SPACE_LIMIT with 0xffffffff or
> 0xffffffffffffffffUL may have problem.

The latter is nonsense, the PCI-side address space is only 32 bits wide.


 \ /
  Last update: 2012-05-29 21:21    [W:0.168 / U:4.848 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site