lkml.org 
[lkml]   [2020]   [Sep]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] arch: x86: power: cpu: init %gs before __restore_processor_state (clang)
On Tue, Sep 15, 2020 at 11:36:13AM -0700, Roman Kiryanov wrote:
> This is fair. Unfortunately I am not an x86 asm expert. I expect the proper
> fix should land into arch/x86/kernel/acpi/wakeup_64.S to init %gs
> (maybe some more registers) before "jmp restore_processor_state".

... because "LLVM appears to be inlining functions with stack protectors
into functions compiled with -fno-stack-protector" and now the *kernel*
needs to init %gs?

How about LLVM stops doing those wrong inlining decisions?

--
Regards/Gruss,
Boris.

https://people.kernel.org/tglx/notes-about-netiquette

\
 
 \ /
  Last update: 2020-09-15 20:53    [W:0.070 / U:1.704 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site