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Subject[PATCH v2 0/3] arm64: cpufeature: Fix handling of CTR_EL0
Date
This series makes sure that we handle the CTR_EL0 field mismatches
properly, especially for the IDC field. Also, skip trapping CTR
accesses on a CPU if it matches the safe value.

Applies on arm64 for-next/core.

Changes since v1
- Fix wrong hunk in has_cache_idc()
- Allow a late secondary CPU with raw CTR_EL0.IDC = 0 and effective
CTR_EL0.IDC = 1, to boot on a system without IDC available.

Suzuki K Poulose (3):
arm64: cpufeature: ctr: Fix cpu capability check for late CPUs
arm64: cpufeature: Fix handling of CTR_EL0.IDC field
arm64: cpufeature: Trap CTR_EL0 access only where it is necessary

arch/arm64/include/asm/cache.h | 40 ++++++++++++++++++++++++++++++++++
arch/arm64/kernel/cpu_errata.c | 34 +++++++++++++++++++++++++----
arch/arm64/kernel/cpufeature.c | 35 +++++++++++++++++++++++++----
arch/arm64/kernel/cpuinfo.c | 10 ++++++++-
4 files changed, 110 insertions(+), 9 deletions(-)

--
2.19.0

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