[lkml]   [2017]   [Jun]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [tip:x86/platform] x86/PCI/mmcfg: Switch to ECAM config mode if possible
> Hi Thomas,
> Would this patch actually void the commit:

Yes it does. My origina; patches were opt-in for this reason, but Thomas doesn't
believe in historical or other people's experience.

But MCFG problems were a long time ago and noone uses these systems anymore,
so perhaps he is right.


> commit a0ca9909609470ad779b9b9cc68ce96e975afff7
> Author: Ivan Kokshaysky <>
> Date: Mon Jan 14 17:31:09 2008 -0500
> PCI x86: always use conf1 to access config space below 256 bytes
> Thanks to Loic Prylli <>, who originally proposed
> this idea.
> Always using legacy configuration mechanism for the legacy config space
> and extended mechanism (mmconf) for the extended config space is
> a simple and very logical approach. It's supposed to resolve all
> known mmconf problems. It still allows per-device quirks (tweaking
> dev->cfg_size). It also allows to get rid of mmconf fallback code.
> Signed-off-by: Ivan Kokshaysky <>
> Signed-off-by: Matthew Wilcox <>
> Signed-off-by: Linus Torvalds <>

 \ /
  Last update: 2017-06-30 05:19    [W:0.069 / U:2.132 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site