linux-kernel - Re: [PATCH v5 0/7] arm_pmu: Use NMI for perf interrupt

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Message-ID: <4c615abd-7eee-ac3d-1ce4-939906d26b87@arm.com>
Date:   Thu, 25 Jun 2020 16:11:18 +0100
From:   Alexandru Elisei <alexandru.elisei@....com>
To:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:     mark.rutland@....com, maz@...nel.org, will@...nel.org,
        catalin.marinas@....com
Subject: Re: [PATCH v5 0/7] arm_pmu: Use NMI for perf interrupt

Hi,

On 6/17/20 12:38 PM, Alexandru Elisei wrote:
> The series makes the arm_pmu driver use NMIs for the perf interrupt when
> NMIs are available on the platform (currently, only arm64 + GICv3). To make
> it easier to play with the patches, I've pushed a branch at [1]:
>
> $ git clone -b pmu-nmi-v5 git://linux-arm.org/linux-ae

For people who wanted to test the series, but couldn't because their firmware was
setting SCR_EL3.FIQ, I pushed some patches [1] to fix that. Now pseudo-NMIs work
on all GICv3 security + SCR_EL3.FIQ combinations.

[1] https://lists.infradead.org/pipermail/linux-arm-kernel/2020-June/580143.html

Thanks,
Alex