Re: [PATCH v4 0/3] KVM/ARM: Fix >256 vcpus

[Peter Maydell]

On Thu, 3 Oct 2019 at 16:46, Eric Auger <address@hidden> wrote:
>
> Since 4.18, KVM/ARM exposes a KVM_MAX_VCPUS equal to 512. However it was
> reported [1] that a VM with more than 256 vcpus cannot be launched. 5.4
> fixes the situation with 2 patches:
> - one upgrade of the KVM_IRQ_LINE API [2] supporting a vcpu id encoded
>   on 12 bits,
> - the reduction of KVM IO devices consumed by each GICv3 redistributor [3]
>
> This series uses the new KVM_IRQ_LINE API and also checks the associated
> capability (KVM_CAP_ARM_IRQ_LINE_LAYOUT_2) in machvirt.
>
> Without the series, as soon as the -smp arguments exceeds 256, QEMU exits
> with "kvm_set_irq: Invalid argument".


Applied to target-arm.next, thanks.

-- PMM