[PATCH v5 0/7] arm_pmu: Use NMI for perf interrupt

Alexandru Elisei alexandru.elisei at arm.com
Thu Jun 25 11:11:18 EDT 2020


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


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