mbox series

[stable:PATCH,0/5,v4.19] arm64: Workaround Neoverse-N1 #1542419

Message ID 20200424163845.4141-1-james.morse@arm.com
Headers show
Series arm64: Workaround Neoverse-N1 #1542419 | expand

Message

James Morse April 24, 2020, 4:38 p.m. UTC 
This series backports the Neoverse-N1 #1542419 erratum workaround
to v4.19.116. The series was originally merged in v5.5.

These patches handle user-space. The kernel change was:
commit dd8a1f134884 ("arm64: ftrace: Ensure synchronisation in PLT setup
for Neoverse-N1 #1542419"), which has already been picked up by stable.
(magic!)

Backporting this stuff past v4.19 isn't straight-forward as the kernel
change depends on the work done in:
https://lore.kernel.org/linux-arm-kernel/1529656278-878-1-git-send-email-will.deacon@arm.com/
which was merged for v4.19.

Thanks,

James


Catalin Marinas (1):
  arm64: Silence clang warning on mismatched value/register sizes

James Morse (3):
  arm64: errata: Hide CTR_EL0.DIC on systems affected by Neoverse-N1
    #1542419
  arm64: Fake the IminLine size on systems affected by Neoverse-N1
    #1542419
  arm64: compat: Workaround Neoverse-N1 #1542419 for compat user-space

Marc Zyngier (1):
  arm64: Add part number for Neoverse N1

 Documentation/arm64/silicon-errata.txt |  1 +
 arch/arm64/Kconfig                     | 16 ++++++++++++++++
 arch/arm64/include/asm/cache.h         |  3 ++-
 arch/arm64/include/asm/cpucaps.h       |  3 ++-
 arch/arm64/include/asm/cputype.h       |  2 ++
 arch/arm64/kernel/cpu_errata.c         | 22 ++++++++++++++++++++++
 arch/arm64/kernel/sys_compat.c         | 11 +++++++++++
 arch/arm64/kernel/traps.c              |  9 +++++++++
 8 files changed, 65 insertions(+), 2 deletions(-)