Re: [PATCH] KVM: arm64: Remove redundant check for S2FWB
From: Marc Zyngier <maz@kernel.org>
Date: 2021-02-05 17:25:17
Also in:
kvmarm
From: Marc Zyngier <maz@kernel.org>
Date: 2021-02-05 17:25:17
Also in:
kvmarm
Hi Jing, On 2021-02-05 04:44, Jing Zhang wrote:
Remove redundant check for CPU feature S2FWB in dcache flush code to save some CPU cycles for every memslot flush and unmapping.
What CPU cycles? This is only a static branch. Can you actually
measure the overhead? What does it represent in the face of
a full memslot unmapping?
Thanks,
M.
--
Jazz is not dead. It just smells funny...
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