lkml.org 
[lkml]   [2020]   [Apr]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH 0/7] livepatch,module: Remove .klp.arch and module_disable_ro()
From
Date
On 4/14/20 12:28 PM, Josh Poimboeuf wrote:
> Better late than never, these patches add simplifications and
> improvements for some issues Peter found six months ago, as part of his
> non-writable text code (W^X) cleanups.
>
> Highlights:
>
> - Remove the livepatch arch-specific .klp.arch sections, which were used
> to do paravirt patching and alternatives patching for livepatch
> replacement code.
>
> - Add support for jump labels in patched code.

Re: jump labels and late-module patching support...

Is there still an issue of a non-exported static key defined in a
to-be-patched module referenced and resolved via klp-relocation when the
livepatch module is loaded first? (Basically the same case I asked Petr
about in his split livepatch module PoC. [1])

Or should we declare this an invalid klp-relocation use case and force
the livepatch author to use static_key_enabled()?

[1] https://lore.kernel.org/lkml/20200407205740.GA17061@redhat.com/

-- Joe

\
 
 \ /
  Last update: 2020-04-15 02:58    [W:0.154 / U:2.396 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site