Re: [Xen-devel] [PATCH QEMU v4] xen/pt: allow QEMU to request MSI unmasking at bind time

2017-08-24 Thread Stefano Stabellini
On Thu, 24 Aug 2017, Roger Pau Monne wrote: > When a MSI interrupt is bound to a guest using > xc_domain_update_msi_irq (XEN_DOMCTL_bind_pt_irq) the interrupt is > left masked by default. > > This causes problems with guests that first configure interrupts and > clean the per-entry MSIX table mask

[Xen-devel] [PATCH QEMU v4] xen/pt: allow QEMU to request MSI unmasking at bind time

2017-08-24 Thread Roger Pau Monne
When a MSI interrupt is bound to a guest using xc_domain_update_msi_irq (XEN_DOMCTL_bind_pt_irq) the interrupt is left masked by default. This causes problems with guests that first configure interrupts and clean the per-entry MSIX table mask bit and afterwards enable MSIX globally. In such scenar