Thread (3 messages) 3 messages, 2 authors, 2021-06-18

Re: [PATCH] KVM: arm64: Don't zero the cycle count register when PMCR_EL0.P is set

From: Marc Zyngier <maz@kernel.org>
Date: 2021-06-18 13:24:51
Also in: kvmarm

On Fri, 18 Jun 2021 11:51:39 +0100, Alexandru Elisei wrote:
According to ARM DDI 0487G.a, page D13-3895, setting the PMCR_EL0.P bit to
1 has the following effect:

"Reset all event counters accessible in the current Exception level, not
including PMCCNTR_EL0, to zero."

Similar behaviour is described for AArch32 on page G8-7022. Make it so.
Applied to kvm-arm64/pmu-fixes, thanks!

[1/1] KVM: arm64: Don't zero the cycle count register when PMCR_EL0.P is set
      commit: 2a71fabf6a1bc9162a84e18d6ab991230ca4d588

Cheers,

	M.
-- 
Without deviation from the norm, progress is not possible.



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