lkml.org 
[lkml]   [2018]   [Mar]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Subject[PATCH RFC 0/8] powerpc barrier_nospec
Date
Hello,

this is patchset adding barrier_nospec on powerpc. It is based on the
out-of-tree gmb() patch and the existing rfi patches.

I do not have the tests for the Spectre/Meltdown issues available so this is
untested.

Feedback on the general approach as well as actual effectivity is welcome.

Thanks

Michal


Michal Suchanek (8):
powerpc: Add barrier_nospec
powerpc: Use barrier_nospec in copy_from_user
powerpc/64: Use barrier_nospec in syscall entry
powerpc/64s: Add support for ori barrier_nospec
powerpc/64: Patch barrier_nospec in modules
powerpc/64: barrier_nospec: Add debugfs trigger
powerpc/64s: barrier_nospec: Add hcall triggerr
powerpc/64: barrier_nospec: Add commandline trigger

arch/powerpc/include/asm/barrier.h | 9 ++++
arch/powerpc/include/asm/feature-fixups.h | 9 ++++
arch/powerpc/include/asm/setup.h | 11 +++++
arch/powerpc/include/asm/uaccess.h | 11 ++++-
arch/powerpc/kernel/entry_64.S | 3 ++
arch/powerpc/kernel/module.c | 6 +++
arch/powerpc/kernel/setup_64.c | 72 +++++++++++++++++++++++++++++++
arch/powerpc/kernel/vmlinux.lds.S | 7 +++
arch/powerpc/lib/feature-fixups.c | 38 ++++++++++++++++
arch/powerpc/platforms/pseries/setup.c | 38 ++++++++++------
10 files changed, 190 insertions(+), 14 deletions(-)

--
2.13.6

\
 
 \ /
  Last update: 2018-03-13 19:34    [W:0.117 / U:4.468 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site