KVM: arm64: Handle blocking WFIT instruction

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When trapping a blocking WFIT instruction, take it into account when
computing the deadline of the background timer.

The state is tracked with a new vcpu flag, and is gated by a new
CPU capability, which isn't currently enabled.

Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20220419182755.601427-6-maz@kernel.org

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Marc Zyngier 2022-04-19 19:27:50 +01:00

parent daf85a5f6b

commit 89f5074c50

4 changed files with 28 additions and 3 deletions

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1

arch/arm64/include/asm/kvm_host.h

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22

arch/arm64/kvm/arch_timer.c

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1

arch/arm64/kvm/arm.c

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7

arch/arm64/kvm/handle_exit.c

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