It is going to be used later on outside MSI code to detect whether one
MSI vector is masked out.

Signed-off-by: Peter Xu <peterx@redhat.com>
---
 hw/pci/msi.c         | 2 +-
 include/hw/pci/msi.h | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/hw/pci/msi.c b/hw/pci/msi.c
index 5e05ce5ec2..47d2b0f33c 100644
--- a/hw/pci/msi.c
+++ b/hw/pci/msi.c
@@ -286,7 +286,7 @@ void msi_reset(PCIDevice *dev)
     MSI_DEV_PRINTF(dev, "reset\n");
 }
 
-static bool msi_is_masked(const PCIDevice *dev, unsigned int vector)
+bool msi_is_masked(const PCIDevice *dev, unsigned int vector)
 {
     uint16_t flags = pci_get_word(dev->config + msi_flags_off(dev));
     uint32_t mask, data;
diff --git a/include/hw/pci/msi.h b/include/hw/pci/msi.h
index 4837bcf490..8440eaee11 100644
--- a/include/hw/pci/msi.h
+++ b/include/hw/pci/msi.h
@@ -39,6 +39,7 @@ int msi_init(struct PCIDevice *dev, uint8_t offset,
              bool msi_per_vector_mask, Error **errp);
 void msi_uninit(struct PCIDevice *dev);
 void msi_reset(PCIDevice *dev);
+bool msi_is_masked(const PCIDevice *dev, unsigned int vector);
 void msi_notify(PCIDevice *dev, unsigned int vector);
 void msi_send_message(PCIDevice *dev, MSIMessage msg);
 void msi_write_config(PCIDevice *dev, uint32_t addr, uint32_t val, int len);
-- 
2.17.1