arm64: Implement arch_counter_get_cntpct to read the physical counter

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As we are about to use the physical counter on arm64 systems that have
KVM support, implement arch_counter_get_cntpct() and the associated
errata workaround functionality for stable timer reads.

Cc: Will Deacon <will.deacon@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>

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Christoffer Dall 2017-10-18 13:06:25 +02:00

parent 8a5776a5f4

commit f2e600c149

2 changed files with 26 additions and 5 deletions

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8

arch/arm64/include/asm/arch_timer.h

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23

drivers/clocksource/arm_arch_timer.c

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