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Re: [Qemu-devel] [RFC v3 2/3] intc/arm_gic: Support IRQ injection for mo
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From: |
Richard Henderson |
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Subject: |
Re: [Qemu-devel] [RFC v3 2/3] intc/arm_gic: Support IRQ injection for more than 256 vpus |
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Date: |
Sat, 14 Sep 2019 10:35:16 -0400 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 |
On 9/13/19 5:56 AM, Eric Auger wrote:
> Host kernels that expose the KVM_CAP_ARM_IRQ_LINE_LAYOUT_2 capability
> allow injection of interrupts along with vcpu ids larger than 255.
> Let's encode the vpcu id on 12 bits according to the upgraded KVM_IRQ_LINE
> ABI when needed.
>
> Given that we have two callsites that need to assemble
> the value for kvm_set_irq(), a new helper routine, kvm_arm_set_irq
> is introduced.
>
> Without that patch qemu exits with "kvm_set_irq: Invalid argument"
> message.
>
> Signed-off-by: Eric Auger <address@hidden>
> Reported-by: Zenghui Yu <address@hidden>
Reviewed-by: Richard Henderson <address@hidden>
r~