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James Morse f2791551ce arm64: errata: Hide CTR_EL0.DIC on systems affected by Neoverse-N1 #1542419
[ Upstream commit 05460849c3 ]

Cores affected by Neoverse-N1 #1542419 could execute a stale instruction
when a branch is updated to point to freshly generated instructions.

To workaround this issue we need user-space to issue unnecessary
icache maintenance that we can trap. Start by hiding CTR_EL0.DIC.

Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: James Morse <james.morse@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: James Morse <james.morse@arm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-04-29 16:32:56 +02:00
..
acpi_object_usage.rst docs: arm64: convert docs to ReST and rename to .rst 2019-06-14 14:20:27 -06:00
arm-acpi.rst docs: arm64: convert docs to ReST and rename to .rst 2019-06-14 14:20:27 -06:00
booting.rst Devicetree updates for v5.3: 2019-07-11 18:35:30 -07:00
cpu-feature-registers.rst docs: arm64: convert docs to ReST and rename to .rst 2019-06-14 14:20:27 -06:00
elf_hwcaps.rst It's been a relatively busy cycle for docs: 2019-07-09 12:34:26 -07:00
hugetlbpage.rst docs: arm64: convert docs to ReST and rename to .rst 2019-06-14 14:20:27 -06:00
index.rst arm64: Add tagged-address-abi.rst to index.rst 2019-08-22 18:22:57 +01:00
kasan-offsets.sh arm64: kasan: Switch to using KASAN_SHADOW_OFFSET 2019-08-09 11:17:11 +01:00
legacy_instructions.rst docs: arm64: convert docs to ReST and rename to .rst 2019-06-14 14:20:27 -06:00
memory.rst docs: arm64: Fix indentation and doc formatting 2019-10-01 13:32:35 +01:00
perf.txt arm64: docs: Document perf event attributes 2019-04-24 15:46:26 +01:00
pointer-authentication.rst docs: arm64: convert docs to ReST and rename to .rst 2019-06-14 14:20:27 -06:00
silicon-errata.rst arm64: errata: Hide CTR_EL0.DIC on systems affected by Neoverse-N1 #1542419 2020-04-29 16:32:56 +02:00
sve.rst It's been a relatively busy cycle for docs: 2019-07-09 12:34:26 -07:00
tagged-address-abi.rst mm: Avoid creating virtual address aliases in brk()/mmap()/mremap() 2020-02-28 17:22:21 +01:00
tagged-pointers.rst arm64: Relax Documentation/arm64/tagged-pointers.rst 2019-08-27 18:16:20 +01:00