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authorAlexander Graf <agraf@suse.de>2016-09-27 21:08:05 +0200
committerChristoffer Dall <cdall@linaro.org>2017-04-09 07:49:38 -0700
commit3fe17e6826162021d5e9274949571b19fc94826b (patch)
treec244b62d6c38003c7f453f8ba39a7cb3d0586c91 /include/kvm
parentb22e7df2d85fcbe8b36bab909b98c3d0239e69e6 (diff)
downloadlinux-3fe17e6826162021d5e9274949571b19fc94826b.tar.bz2
KVM: arm/arm64: Add ARM user space interrupt signaling ABI
We have 2 modes for dealing with interrupts in the ARM world. We can either handle them all using hardware acceleration through the vgic or we can emulate a gic in user space and only drive CPU IRQ pins from there. Unfortunately, when driving IRQs from user space, we never tell user space about events from devices emulated inside the kernel, which may result in interrupt line state changes, so we lose out on for example timer and PMU events if we run with user space gic emulation. Define an ABI to publish such device output levels to userspace. Reviewed-by: Alexander Graf <agraf@suse.de> Reviewed-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
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