mbox series

[stable:PATCH,0/4,v5.4] arm64: Workaround Neoverse-N1 #1542419

Message ID 20200424163805.4087-1-james.morse@arm.com (mailing list archive)
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 v5.4.35. 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 was taken as a fix for v5.4.

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

 Documentation/arm64/silicon-errata.rst |  2 ++
 arch/arm64/Kconfig                     | 16 +++++++++++++
 arch/arm64/include/asm/cache.h         |  3 ++-
 arch/arm64/include/asm/cpucaps.h       |  3 ++-
 arch/arm64/kernel/cpu_errata.c         | 32 +++++++++++++++++++++++++-
 arch/arm64/kernel/sys_compat.c         | 11 +++++++++
 arch/arm64/kernel/traps.c              |  9 ++++++++
 7 files changed, 73 insertions(+), 3 deletions(-)

Comments

Sasha Levin April 25, 2020, 1:44 a.m. UTC | #1 
On Fri, Apr 24, 2020 at 05:38:01PM +0100, James Morse wrote:
>This series backports the Neoverse-N1 #1542419 erratum workaround
>to v5.4.35. 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 was taken as a fix for v5.4.

I've queued this and the 4.19 backport, thank you!