lkml.org 
[lkml]   [2018]   [Oct]   [4]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH v9 04/10] x86: refcount: prevent gcc distortions
From
Date
On 10/04/18 13:05, Nadav Amit wrote:
>
> Funny. Immediate-patching is what I was playing with when I encountered the
> gcc issue. Performance got worse instead of improving (or at least staying
> the same), because inlining got crazy.
>
> Anyhow, wait for my soon-to-be-sent RFC in which I define a macro called
> “call” (to reduce the retpoline overhead) before you talk about damage to
> the eyes.
>

Doing it well is *hard*, as I discovered. The actual patch is much,
much, larger.

-hpa


\
 
 \ /
  Last update: 2018-10-04 22:09    [W:0.180 / U:0.788 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site