• E
    KVM_CAP_IRQFD and KVM_CAP_IRQFD_RESAMPLE checks · f41389ae
    Eric Auger 提交于
    Compute kvm_irqfds_allowed by checking the KVM_CAP_IRQFD extension.
    Remove direct settings in architecture specific files.
    
    Add a new kvm_resamplefds_allowed variable, initialized by
    checking the KVM_CAP_IRQFD_RESAMPLE extension. Add a corresponding
    kvm_resamplefds_enabled() function.
    
    A special notice for s390 where KVM_CAP_IRQFD was not immediatly
    advirtised when irqfd capability was introduced in the kernel.
    KVM_CAP_IRQ_ROUTING was advertised instead.
    
    This was fixed in "KVM: s390: announce irqfd capability",
    ebc3226202d5956a5963185222982d435378b899 whereas irqfd support
    was brought in 84223598778ba08041f4297fda485df83414d57e,
    "KVM: s390: irq routing for adapter interrupts".  Both commits
    first appear in 3.15 so there should not be any kernel
    version impacted by this QEMU modification.
    Signed-off-by: NEric Auger <eric.auger@linaro.org>
    Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
    f41389ae
kvm.c 36.0 KB