linux-brain/Documentation/arm64
James Morse 1b568dfec3 arm64: errata: Hide CTR_EL0.DIC on systems affected by Neoverse-N1 #1542419
[ Upstream commit 05460849c3b51180d5ada3373d0449aea19075e4 ]

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>
[ Removed cpu_enable_trap_ctr_access() hunk due to no 4afe8e79da]
Signed-off-by: James Morse <james.morse@arm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-04-29 16:31:08 +02:00
..
acpi_object_usage.txt ARM64: ACPI: Update documentation for latest specification version 2016-06-21 16:26:09 +01:00
arm-acpi.txt ARM64: ACPI: Update documentation for latest specification version 2016-06-21 16:26:09 +01:00
booting.txt arm64: add the initrd region to the linear mapping explicitly 2016-04-14 16:20:45 +01:00
cpu-feature-registers.txt arm64: Expose Arm v8.4 features 2018-03-19 18:14:27 +00:00
elf_hwcaps.txt arm64: docs: Document SSBS HWCAP 2019-10-11 18:21:31 +02:00
legacy_instructions.txt arm64: Emulate SETEND for AArch32 tasks 2015-01-23 17:11:44 +00:00
memory.txt arm64: KVM: Allow mapping of vectors outside of the RAM region 2018-03-19 13:06:46 +00:00
silicon-errata.txt arm64: errata: Hide CTR_EL0.DIC on systems affected by Neoverse-N1 #1542419 2020-04-29 16:31:08 +02:00
sve.txt Documentation/arm64/sve: Couple of improvements and typos 2018-08-29 11:33:19 +01:00
tagged-pointers.txt arm64: documentation: document tagged pointer stack constraints 2017-05-09 17:43:18 +01:00