CVS commit: src/sys/arch/arm/cortex

["Jared D. McNeill" <jmcneill%netbsd.org@localhost>]

Module Name:    src
Committed By:   jmcneill
Date:           Tue Mar 31 23:01:38 UTC 2026

Modified Files:
        src/sys/arch/arm/cortex: gicv3.c

Log Message:
gicv3: Stop using ICC_PMR_EL1 to mask interrupts.

Managing ICC_PMR_EL1 with spl changes is too costly, even with lazy PMR
updates. Let's simplify things. We can still take advantage of interrupt
prioritization for delivery but let's do spl filtering in software.

On Ampere eMAG, iperf3 on the loopback interface sees a ~18% performance
improvement with this change.


To generate a diff of this commit:
cvs rdiff -u -r1.56 -r1.57 src/sys/arch/arm/cortex/gicv3.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.