[PATCH v1 0/6] arm64: BBML3 errata workarounds and cleanup

[Ryan Roberts <ryan.roberts@arm.com>]

Hi All,

This series updates the BBML3 allow list following a review of Arm CPU errata
and implementation support.

The first two patches remove Neoverse-V3/AE and Cortex-X4: their latest SDENs
show that revisions previously treated as unaffected still suffer from
BBM-related livelock errata. These patches are intended for stable backporting.

The remaining patches introduce default-enabled Kconfig options to track 10
BBML3 errata, and enable BBML3 for Cortex-A320, A520 and A720. The result is
much more explicit about what CPUs are supported and what CPUs have errata
preventing them from being opted-in.

Applies on top of v7.4-rc2.

Thanks,
Ryan

Ryan Roberts (6):
  arm64: cpufeature: Remove Neoverse-V3/AE from the BBML3 allow list
  arm64: cpufeature: Remove Cortex-X4 from the BBML3 allow list
  arm64: cputype: Add Cortex-A320 definitions
  arm64: cputype: Add C2-Ultra definitions
  arm64: cpufeature: Track BBML3 exclusions with erratum options
  arm64: cpufeature: Enable BBML3 on Cortex-A320, A520 and A720

 Documentation/arch/arm64/silicon-errata.rst |  26 +++-
 arch/arm64/Kconfig                          | 163 ++++++++++++++++++++
 arch/arm64/include/asm/cputype.h            |   4 +
 arch/arm64/kernel/cpufeature.c              |  43 +++++-
 4 files changed, 230 insertions(+), 6 deletions(-)

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2.43.0