arm64: Consolidate hotplug notifier for instruction emulation

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As of now each insn_emulation has a cpu hotplug notifier that
enables/disables the CPU feature bit for the functionality. This
patch re-arranges the code, such that there is only one notifier
that runs through the list of registered emulation hooks and runs
their corresponding set_hw_mode.

We do nothing when a CPU is dying as we will set the appropriate bits
as it comes back online based on the state of the hooks.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Suzuki K. Poulose <suzuki.poulose@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Punit Agrawal <punit.agrawal@arm.com>
[catalin.marinas@arm.com: fix pr_warn compilation error]
[catalin.marinas@arm.com: remove unnecessary "insn" check]
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

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Suzuki K. Poulose 2015-01-21 12:43:10 +00:00 • committed by Catalin Marinas

parent 04597a65c5

commit 736d474f0f

2 changed files with 79 additions and 48 deletions

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2

arch/arm64/include/asm/cputype.h

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125

arch/arm64/kernel/armv8_deprecated.c

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