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1b568dfec3
[ 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
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acpi_object_usage.txt | ||
arm-acpi.txt | ||
booting.txt | ||
cpu-feature-registers.txt | ||
elf_hwcaps.txt | ||
legacy_instructions.txt | ||
memory.txt | ||
silicon-errata.txt | ||
sve.txt | ||
tagged-pointers.txt |