kvm/i386: Add xen-evtchn-max-pirq property

The default number of PIRQs is set to 256 to avoid issues with 32-bit MSI
devices. Allow it to be increased if the user desires.

Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>

1 files changed, 6 insertions, 0 deletions

diff --git a/target/i386/kvm/xen-emu.c b/target/i386/kvm/xen-emu.c
index 96a9082196..bad3131d08 100644
--- a/target/i386/kvm/xen-emu.c
+++ b/target/i386/kvm/xen-emu.c
@@ -1765,6 +1765,12 @@ uint16_t kvm_xen_get_gnttab_max_frames(void)
     return s->xen_gnttab_max_frames;
 }
 
+uint16_t kvm_xen_get_evtchn_max_pirq(void)
+{
+    KVMState *s = KVM_STATE(current_accel());
+    return s->xen_evtchn_max_pirq;
+}
+
 int kvm_put_xen_state(CPUState *cs)
 {
     X86CPU *cpu = X86_CPU(cs);