linux-stable.git/arch/powerpc/kernel/cputable.c, branch v5.7.2

powerpc/cputable: Remove unnecessary copy of cpu_spec->oprofile_type

2020-04-01T03:30:51+00:00

Before checking for cpu_type == NULL, this same copy happens, so doing
it here will just write the same value to the t->oprofile_type
again.

Remove the repeated copy, as it is unnecessary.

Signed-off-by: Leonardo Bras 
Reviewed-by: Michael Neuling 
Signed-off-by: Michael Ellerman 
Link: https://lore.kernel.org/r/20200215053637.280880-1-leonardo@linux.ibm.com

powerpc: fix hardware PMU exception bug on PowerVM compatibility mode systems

2020-02-27T23:09:33+00:00

PowerVM systems running compatibility mode on a few Power8 revisions are
still vulnerable to the hardware defect that loses PMU exceptions arriving
prior to a context switch.

The software fix for this issue is enabled through the CPU_FTR_PMAO_BUG
cpu_feature bit, nevertheless this bit also needs to be set for PowerVM
compatibility mode systems.

Fixes: 68f2f0d431d9ea4 ("powerpc: Add a cpu feature CPU_FTR_PMAO_BUG")
Signed-off-by: Desnes A. Nunes do Rosario 
Reviewed-by: Leonardo Bras 
Signed-off-by: Michael Ellerman 
Link: https://lore.kernel.org/r/20200227134715.9715-1-desnesn@linux.ibm.com

powerpc/32s: get rid of CPU_FTR_601 feature

2019-08-28T13:19:33+00:00

Now that 601 is exclusive from other 6xx, CPU_FTR_601 and
associated fixups are useless.

Drop this feature and use #ifdefs instead.

Signed-off-by: Christophe Leroy 
Signed-off-by: Michael Ellerman 
Link: https://lore.kernel.org/r/ecdb7194a17dbfa01865df6a82979533adc2c70b.1566834712.git.christophe.leroy@c-s.fr

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152

2019-05-30T18:26:32+00:00

Based on 1 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation either version 2 of the license or at
  your option any later version

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 3029 file(s).

Signed-off-by: Thomas Gleixner 
Reviewed-by: Allison Randal 
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de
Signed-off-by: Greg Kroah-Hartman

powerpc: don't use direct assignation during early boot.

2019-05-02T15:20:25+00:00

In kernel/cputable.c, explicitly use memcpy() instead of *y = *x;
This will allow GCC to replace it with __memcpy() when KASAN is
selected.

Acked-by: Dmitry Vyukov 
Signed-off-by: Christophe Leroy 
Signed-off-by: Michael Ellerman

powerpc/83xx: handle machine check caused by watchdog timer

2018-12-22T02:56:41+00:00

When the watchdog timer is set in interrupt mode, it causes a
machine check when it times out. The purpose of this mode is to
ease debugging, not to crash the kernel and reboot the machine.

This patch implements a special handling for that, in order to not
crash the kernel if the watchdog times out while in interrupt or
within the idle task.

Signed-off-by: Christophe Leroy 
[scottwood: added missing #include]
Signed-off-by: Scott Wood

Merge branch 'topic/ppc-kvm' into next

2018-07-19T04:37:57+00:00

Merge in some commits we're sharing with the KVM tree.

I manually propagated the change from commit d3d4ffaae439
("powerpc/powernv/ioda2: Reduce upper limit for DMA window size") into
pci-ioda-tce.c.

Conflicts:
        arch/powerpc/include/asm/cputable.h
        arch/powerpc/platforms/powernv/pci-ioda.c
        arch/powerpc/platforms/powernv/pci.h

powerpc/64s: Remove POWER9 DD1 support

2018-07-16T01:37:21+00:00

POWER9 DD1 was never a product. It is no longer supported by upstream
firmware, and it is not effectively supported in Linux due to lack of
testing.

Signed-off-by: Nicholas Piggin 
Reviewed-by: Michael Ellerman 
[mpe: Remove arch_make_huge_pte() entirely]
Signed-off-by: Michael Ellerman

powerpc: Remove Power8 DD1 from cputable

2018-07-12T11:08:09+00:00

This was added to support an early version of Power8 that did not have
working doorbells. These machines were not publicly available, and all of
the internal users have long since upgraded.

Signed-off-by: Joel Stanley 
Signed-off-by: Michael Ellerman

powerpc/64s: Remove POWER4 support

2018-03-31T13:47:50+00:00

POWER4 has been broken since at least the change 49d09bf2a6
("powerpc/64s: Optimise MSR handling in exception handling"), which
requires mtmsrd L=1 support. This was introduced in ISA v2.01, and
POWER4 supports ISA v2.00.

Signed-off-by: Nicholas Piggin 
Signed-off-by: Michael Ellerman