[PATCH 2/4] kvm: Introduce kvm_has_intx_set_mask

[Jan Kiszka <jan.kiszka@web.de>]

From: Jan Kiszka <jan.kiszka@siemens.com>

Will be used by PCI device assignment code.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
---
 kvm-all.c |    8 ++++++++
 kvm.h     |    1 +
 2 files changed, 9 insertions(+), 0 deletions(-)

diff --git a/kvm-all.c b/kvm-all.c
index fd9d9b4..84d4f7f 100644
--- a/kvm-all.c
+++ b/kvm-all.c
@@ -88,6 +88,7 @@ struct KVMState
     int pit_state2;
     int xsave, xcrs;
     int many_ioeventfds;
+    int intx_set_mask;
     /* The man page (and posix) say ioctl numbers are signed int, but
      * they're not.  Linux, glibc and *BSD all treat ioctl numbers as
      * unsigned, and treating them as signed here can break things */
@@ -1387,6 +1388,8 @@ int kvm_init(void)
         s->irq_set_ioctl = KVM_IRQ_LINE_STATUS;
     }
 
+    s->intx_set_mask = kvm_check_extension(s, KVM_CAP_PCI_2_3);
+
     ret = kvm_arch_init(s);
     if (ret < 0) {
         goto err;
@@ -1739,6 +1742,11 @@ int kvm_has_gsi_routing(void)
 #endif
 }
 
+int kvm_has_intx_set_mask(void)
+{
+    return kvm_state->intx_set_mask;
+}
+
 void *kvm_vmalloc(ram_addr_t size)
 {
 #ifdef TARGET_S390X
diff --git a/kvm.h b/kvm.h
index 5cefe3a..dea2998 100644
--- a/kvm.h
+++ b/kvm.h
@@ -117,6 +117,7 @@ int kvm_has_xcrs(void);
 int kvm_has_pit_state2(void);
 int kvm_has_many_ioeventfds(void);
 int kvm_has_gsi_routing(void);
+int kvm_has_intx_set_mask(void);
 
 #ifdef NEED_CPU_H
 int kvm_init_vcpu(CPUArchState *env);
-- 
1.7.3.4