Re: [PATCH v2] KVM: arm/arm64: Route vtimer events to user space

Christoffer Dall
2016-09-16T09:44:33Z

Alex,

On Fri, Sep 16, 2016 at 07:09:13AM +0200, Alexander Graf wrote:
> 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 timer events that may result in interrupt line state changes, so we
> lose out on timer events if we run with user space gic emulation.
>
> This patch set fixes that by routing vtimer expiration events to user space.
> With this patch I can successfully run edk2 and Linux with user space gic
> emulation.

I have two versions of v2. Are there any differences or did it just go
out twice or got duplicated somehow on my end?

Thanks,
-Christoffer